Gamma-ray Burst 140206A

(All information courtesy of the instrument teams.)

Previous IAU Circulars

none

Results of Observations

GCN/BACODINE POSITION NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 06 Feb 14 07:17:48 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     585834,   Seg_Num: 0
GRB_RA:          145.350d {+09h 41m 24s} (J2000),
                 145.634d {+09h 42m 32s} (current),
                 144.335d {+09h 37m 20s} (1950)
GRB_DEC:         +66.750d {+66d 45' 01"} (J2000),
                 +66.686d {+66d 41' 08"} (current),
                 +66.978d {+66d 58' 41"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       5304 [cnts]    Image_Peak=635 [image_cnts]
TRIGGER_DUR:     1.024 [sec] 
TRIGGER_INDEX:   146     E_range: 25-100 keV
BKG_INTEN:       19505 [cnts]
BKG_TIME:        26228.38 SOD {07:17:08.38} UT
BKG_DUR:         8 [sec]
GRB_DATE:        16694 TJD;    37 DOY;   14/02/06
GRB_TIME:        26240.16 SOD {07:17:20.16} UT
GRB_PHI:          40.20 [deg]
GRB_THETA:         4.24 [deg]
SOLN_STATUS:     0x30000003
RATE_SIGNIF:     52.82 [sigma]
IMAGE_SIGNIF:    18.35 [sigma]
MERIT_PARAMS:     +1  +0  +0  +0  +2  +6  +0  +0 +62  +0 
SUN_POSTN:       319.86d {+21h 19m 28s}  -15.61d {-15d 36' 44"}
SUN_DIST:        128.78 [deg]   Sun_angle= 11.6 [hr] (West of Sun)
MOON_POSTN:       39.44d {+02h 37m 45s}  +14.56d {+14d 33' 37"}
MOON_DIST:        82.88 [deg]
MOON_ILLUM:      45 [%]
GAL_COORDS:      145.62, 41.02 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      119.61, 48.91 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Coordinates.  
COMMENTS:        This is a rate trigger.  
COMMENTS:        A point_source was found.  
COMMENTS:        This does not match any source in the on-board catalog.  
COMMENTS:        This does not match any source in the ground catalog.  
COMMENTS:        This is a GRB.  
COMMENTS:        This trigger occurred at longitude,latitude = 249.63,20.60 [deg].  
COMMENTS:           
COMMENTS:        NOTE: This BAT event is spatially(0.00<0.1deg) and temporally(0.0<100sec) coincident with the INTEGRAL event (trignum=6442).

red DSS finding chart ps-file

GCN NOTICE

 
TITLE:          GCN/INTEGRAL NOTICE
NOTICE_DATE:    Thu 06 Feb 14 07:17:28 UT
NOTICE_TYPE:    INTEGRAL Wakeup
TRIGGER_NUM:    6442,   Sub_Num: 0
GRB_RA:         145.3015d {+09h 41m 12s} (J2000),
                145.5857d {+09h 42m 21s} (current),
                144.2853d {+09h 37m 08s} (1950)
GRB_DEC:        +66.7581d {+66d 45' 29"} (J2000),
                +66.6934d {+66d 41' 36"} (current),
                +66.9855d {+66d 59' 08"} (1950)
GRB_ERROR:      3.03 [arcmin, radius, statistical only]
GRB_INTEN:      9.96 [sigma]
GRB_TIME:       26240.93 SOD {07:17:20.93} UT
GRB_DATE:       16694 TJD;    37 DOY;   14/02/06
SC_RA:          152.63 [deg] (J2000) 
SC_DEC:          71.13 [deg] (J2000) 
SUN_POSTN:      319.86d {+21h 19m 28s}  -15.61d {-15d 36' 44"}
SUN_DIST:       128.78 [deg]   Sun_angle= 11.6 [hr] (West of Sun)
MOON_POSTN:      39.43d {+02h 37m 44s}  +14.56d {+14d 33' 35"}
MOON_DIST:       82.86 [deg] 
GAL_COORDS:     145.63, 40.99 [deg] galactic lon,lat of the burst
ECL_COORDS:     119.58, 48.91 [deg] ecliptic lon,lat of the burst
COMMENTS:       INTEGRAL GRB Coordinates.
COMMENTS:       Time_Scale=0.0399 and Time_Error=2.0000.
COMMENTS:       Possibly real GRB event

GCN NOTICE

  
TITLE:          GCN/INTEGRAL NOTICE
NOTICE_DATE:    Thu 06 Feb 14 07:17:46 UT
NOTICE_TYPE:    INTEGRAL Refined
TRIGGER_NUM:    6442,   Sub_Num: 1
GRB_RA:         145.2903d {+09h 41m 10s} (J2000),
                145.5745d {+09h 42m 18s} (current),
                144.2740d {+09h 37m 06s} (1950)
GRB_DEC:        +66.7565d {+66d 45' 24"} (J2000),
                +66.6919d {+66d 41' 31"} (current),
                +66.9840d {+66d 59' 02"} (1950)
GRB_ERROR:      2.63 [arcmin, radius, statistical only]
GRB_INTEN:      20.11 [sigma] 
GRB_TIME:       26252.63 SOD {07:17:32.63} UT
GRB_DATE:       16694 TJD;    37 DOY;   14/02/06
SC_RA:          152.63 [deg] (J2000) 
SC_DEC:          71.13 [deg] (J2000) 
SUN_POSTN:      319.86d {+21h 19m 28s}  -15.61d {-15d 36' 44"}
SUN_DIST:       128.78 [deg]   Sun_angle= 11.6 [hr] (West of Sun)
MOON_POSTN:      39.44d {+02h 37m 45s}  +14.56d {+14d 33' 37"}
MOON_DIST:       82.85 [deg] 
GAL_COORDS:     145.63, 40.99 [deg] galactic lon,lat of the burst
ECL_COORDS:     119.57, 48.91 [deg] ecliptic lon,lat of the burst
COMMENTS:       INTEGRAL GRB Coordinates.
COMMENTS:       Time_Scale=0.0080 and Time_Error=2.0000.
COMMENTS:       Possibly real GRB event

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 06 Feb 14 07:18:39 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     585834,   Seg_Num: 0
GRB_RA:          145.3325d {+09h 41m 19.80s} (J2000),
                 145.6166d {+09h 42m 27.98s} (current),
                 144.3165d {+09h 37m 15.94s} (1950)
GRB_DEC:         +66.7608d {+66d 45' 38.8"} (J2000),
                 +66.6961d {+66d 41' 46.0"} (current),
                 +66.9884d {+66d 59' 18.1"} (1950)
GRB_ERROR:       4.7 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       9.62e-09 [erg/cm2/sec]
GRB_SIGNIF:      14.10 [sigma]
IMG_START_DATE:  16694 TJD;    37 DOY;   14/02/06
IMG_START_TIME:  26284.08 SOD {07:18:04.08} UT,   43.9 [sec] since BAT Trigger Time
TAM[0-3]:        327.67 237.22 261.55 243.82
AMPLIFIER:       2
WAVEFORM:        134
SUN_POSTN:       319.87d {+21h 19m 28s}  -15.61d {-15d 36' 44"}
SUN_DIST:        128.78 [deg]   Sun_angle= 11.6 [hr] (West of Sun)
MOON_POSTN:       39.44d {+02h 37m 46s}  +14.56d {+14d 33' 43"}
MOON_DIST:        82.86 [deg]
MOON_ILLUM:      45 [%]
GAL_COORDS:      145.62, 41.00 [deg] galactic lon,lat of the burst
ECL_COORDS:      119.59, 48.92 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        The XRT position is 0.75 arcmin from the BAT position.  
COMMENTS:        The object found at this position is either a very bright burst or a cosmic ray hit.  
COMMENTS:        Examine the XRT Image to differentiate (CRs are much more compact); see examples at:  
COMMENTS:        http://www.swift.psu.edu/xrt/XRT_Postage_Stamp_Image_Photo_Gallery.htm .

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Thu 06 Feb 14 07:18:41 UT
NOTICE_TYPE:     Fermi-GBM Flight Position
RECORD_NUM:      46
TRIGGER_NUM:     413363898
GRB_RA:          138.567d {+09h 14m 16s} (J2000),
                 138.860d {+09h 15m 26s} (current),
                 137.520d {+09h 10m 05s} (1950)
GRB_DEC:         +65.267d {+65d 16' 00"} (J2000),
                 +65.208d {+65d 12' 28"} (current),
                 +65.474d {+65d 28' 25"} (1950)
GRB_ERROR:       10.65 [deg radius, statistical plus systematic]
GRB_INTEN:       363 [cnts/sec]
DATA_SIGNIF:     12.70 [sigma]
INTEG_TIME:      1.024 [sec]
GRB_DATE:        16694 TJD;    37 DOY;   14/02/06
GRB_TIME:        26295.98 SOD {07:18:15.98} UT
GRB_PHI:         174.00 [deg]
GRB_THETA:       125.00 [deg]
DATA_TIME_SCALE: 1.0240 [sec]
HARD_RATIO:      0.19
LOC_ALGORITHM:   3 (version number of)
MOST_LIKELY:      98%  GRB
2nd_MOST_LIKELY:   1%  Generic SGR
DETECTORS:       0,0,0, 0,0,0, 0,0,1, 0,0,1, 0,0,
SUN_POSTN:       319.87d {+21h 19m 28s}  -15.61d {-15d 36' 44"}
SUN_DIST:        130.40 [deg]   Sun_angle= -11.9 [hr] (East of Sun)
MOON_POSTN:       39.44d {+02h 37m 46s}  +14.56d {+14d 33' 43"}
MOON_DIST:        80.69 [deg]
MOON_ILLUM:      45 [%]
GAL_COORDS:      148.92, 39.16 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      117.01, 46.32 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        Fermi-GBM Flight-calculated Coordinates.  
COMMENTS:        This trigger occurred at longitude,latitude = 144.73,-13.13 [deg].  
COMMENTS:           
COMMENTS:        NOTE: This GBM event is temporally(55.0<100sec) coincident with the SWIFT_BAT event (trignum=585834).

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Thu 06 Feb 14 07:18:50 UT
NOTICE_TYPE:     Fermi-GBM Flight Position
RECORD_NUM:      57
TRIGGER_NUM:     413363898
GRB_RA:          138.567d {+09h 14m 16s} (J2000),
                 138.860d {+09h 15m 26s} (current),
                 137.520d {+09h 10m 05s} (1950)
GRB_DEC:         +65.267d {+65d 16' 00"} (J2000),
                 +65.208d {+65d 12' 28"} (current),
                 +65.474d {+65d 28' 25"} (1950)
GRB_ERROR:       5.25 [deg radius, statistical plus systematic]
GRB_INTEN:       728 [cnts/sec]
DATA_SIGNIF:     44.80 [sigma]
INTEG_TIME:      4.096 [sec]
GRB_DATE:        16694 TJD;    37 DOY;   14/02/06
GRB_TIME:        26295.98 SOD {07:18:15.98} UT
GRB_PHI:         174.00 [deg]
GRB_THETA:       125.00 [deg]
DATA_TIME_SCALE: 4.0960 [sec]
HARD_RATIO:      0.54
LOC_ALGORITHM:   3 (version number of)
MOST_LIKELY:      93%  GRB
2nd_MOST_LIKELY:   4%  Generic Transient
DETECTORS:       0,0,0, 0,0,0, 0,0,1, 0,0,1, 0,0,
SUN_POSTN:       319.87d {+21h 19m 28s}  -15.61d {-15d 36' 43"}
SUN_DIST:        130.40 [deg]   Sun_angle= -11.9 [hr] (East of Sun)
MOON_POSTN:       39.44d {+02h 37m 47s}  +14.56d {+14d 33' 45"}
MOON_DIST:        80.68 [deg]
MOON_ILLUM:      45 [%]
GAL_COORDS:      148.92, 39.16 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      117.01, 46.32 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        Fermi-GBM Flight-calculated Coordinates.  
COMMENTS:        This trigger occurred at longitude,latitude = 144.73,-13.13 [deg].  
COMMENTS:           
COMMENTS:        NOTE: This GBM event is temporally(55.0<100sec) coincident with the SWIFT_BAT event (trignum=585834).

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Thu 06 Feb 14 07:19:00 UT
NOTICE_TYPE:     Fermi-GBM Ground Position
RECORD_NUM:      67
TRIGGER_NUM:     413363898
GRB_RA:          147.550d {+09h 50m 12s} (J2000),
                 147.834d {+09h 51m 20s} (current),
                 146.532d {+09h 46m 08s} (1950)
GRB_DEC:         +68.020d {+68d 01' 12"} (J2000),
                 +67.954d {+67d 57' 13"} (current),
                 +68.254d {+68d 15' 13"} (1950)
GRB_ERROR:       1.00 [deg radius, statistical only]
DATA_SIGNIF:     77.30 [sigma]
DATA_INTERVAL:   4.096 [sec]
GRB_DATE:        16694 TJD;    37 DOY;   14/02/06
GRB_TIME:        26295.98 SOD {07:18:15.98} UT
GRB_PHI:         178.00 [deg]
GRB_THETA:       122.00 [deg]
E_RANGE:         44.032 - 279.965 [keV]
LOC_ALGORITHM:   4143 (Gnd S/W Version number)
SUN_POSTN:       319.87d {+21h 19m 28s}  -15.61d {-15d 36' 43"}
SUN_DIST:        127.41 [deg]   Sun_angle= 11.5 [hr] (West of Sun)
MOON_POSTN:       39.45d {+02h 37m 47s}  +14.56d {+14d 33' 46"}
MOON_DIST:        83.20 [deg]
MOON_ILLUM:      45 [%]
GAL_COORDS:      143.60, 41.08 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      119.73, 50.44 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        Fermi-GBM Ground-calculated Coordinates.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:           
COMMENTS:        NOTE: This GBM event is temporally(55.0<100sec) coincident with the SWIFT_BAT event (trignum=585834).

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Thu 06 Feb 14 07:18:53 UT
NOTICE_TYPE:     Fermi-GBM Ground Position
RECORD_NUM:      56
TRIGGER_NUM:     413363898
GRB_RA:          147.550d {+09h 50m 12s} (J2000),
                 147.834d {+09h 51m 20s} (current),
                 146.532d {+09h 46m 08s} (1950)
GRB_DEC:         +68.020d {+68d 01' 12"} (J2000),
                 +67.954d {+67d 57' 13"} (current),
                 +68.254d {+68d 15' 13"} (1950)
GRB_ERROR:       1.64 [deg radius, statistical only]
DATA_SIGNIF:     43.40 [sigma]
DATA_INTERVAL:   4.096 [sec]
GRB_DATE:        16694 TJD;    37 DOY;   14/02/06
GRB_TIME:        26295.98 SOD {07:18:15.98} UT
GRB_PHI:         178.00 [deg]
GRB_THETA:       122.00 [deg]
E_RANGE:         44.032 - 279.965 [keV]
LOC_ALGORITHM:   4143 (Gnd S/W Version number)
SUN_POSTN:       319.87d {+21h 19m 28s}  -15.61d {-15d 36' 43"}
SUN_DIST:        127.41 [deg]   Sun_angle= 11.5 [hr] (West of Sun)
MOON_POSTN:       39.45d {+02h 37m 47s}  +14.56d {+14d 33' 45"}
MOON_DIST:        83.20 [deg]
MOON_ILLUM:      45 [%]
GAL_COORDS:      143.60, 41.08 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      119.73, 50.44 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        Fermi-GBM Ground-calculated Coordinates.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:           
COMMENTS:        NOTE: This GBM event is temporally(55.0<100sec) coincident with the SWIFT_BAT event (trignum=585834).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 06 Feb 14 07:18:47 UT
NOTICE_TYPE:     Swift-XRT Image
TRIGGER_NUM:     585834,   Seg_Num: 0
GRB_RA:          145.3325d {+09h 41m 19.8s} (J2000),
                 145.6166d {+09h 42m 27.9s} (current),
                 144.3165d {+09h 37m 15.9s} (1950)
GRB_DEC:         +66.7608d {+66d 45' 38.8"} (J2000),
                 +66.6961d {+66d 41' 46.0"} (current),
                 +66.9884d {+66d 59' 18.1"} (1950)
GRB_ERROR:       4.7 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       199 [cnts]
IMG_START_DATE:  16694 TJD;    37 DOY;   14/02/06
IMG_START_TIME:  26284.08 SOD {07:18:04.08} UT,   43.9 [sec] since BAT Trigger Time
CENTROID_X:      288.98,  raw= 289  [pixels]
CENTROID_Y:      310.91,  raw= 311  [pixels]
ROLL:            6.78 [deg]
GAIN:            4
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   30.92
GRB_POS_XRT_Z:   -38.45
IMAGE_URL:       sw00585834000msxps_rw.img
SUN_POSTN:       319.87d {+21h 19m 28s}  -15.61d {-15d 36' 43"}
SUN_DIST:        128.78 [deg]   Sun_angle= 11.6 [hr] (West of Sun)
MOON_POSTN:       39.44d {+02h 37m 47s}  +14.56d {+14d 33' 44"}
MOON_DIST:        82.86 [deg]
MOON_ILLUM:      45 [%]
GAL_COORDS:      145.62, 41.00 [deg] galactic lon,lat of the burst
ECL_COORDS:      119.59, 48.92 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Image.  
COMMENTS:        The object found at this position is either a very bright burst or a cosmic ray hit.  
COMMENTS:        Examine the XRT Image to differentiate (CRs are much more compact); see examples at:  
COMMENTS:        http://www.swift.psu.edu/xrt/XRT_Postage_Stamp_Image_Photo_Gallery.htm .

GCN NOTICE

 
TITLE:          GCN/INTEGRAL NOTICE
NOTICE_DATE:    Thu 06 Feb 14 07:20:30 UT
NOTICE_TYPE:    INTEGRAL Refined
TRIGGER_NUM:    6442,   Sub_Num: 2
GRB_RA:         145.2999d {+09h 41m 12s} (J2000),
                145.5841d {+09h 42m 20s} (current),
                144.2837d {+09h 37m 08s} (1950)
GRB_DEC:        +66.7565d {+66d 45' 23"} (J2000),
                +66.6918d {+66d 41' 30"} (current),
                +66.9839d {+66d 59' 02"} (1950)
GRB_ERROR:      2.53 [arcmin, radius, statistical only]
GRB_INTEN:      37.46 [sigma] 
GRB_TIME:       26303.08 SOD {07:18:23.08} UT
GRB_DATE:       16694 TJD;    37 DOY;   14/02/06
SC_RA:          152.63 [deg] (J2000) 
SC_DEC:          71.13 [deg] (J2000) 
SUN_POSTN:      319.87d {+21h 19m 28s}  -15.61d {-15d 36' 42"}
SUN_DIST:       128.78 [deg]   Sun_angle= 11.6 [hr] (West of Sun)
MOON_POSTN:      39.46d {+02h 37m 50s}  +14.57d {+14d 33' 56"}
MOON_DIST:       82.84 [deg]
GAL_COORDS:     145.63, 40.99 [deg] galactic lon,lat of the burst
ECL_COORDS:     119.58, 48.91 [deg] ecliptic lon,lat of the burst
COMMENTS:       INTEGRAL GRB Coordinates.
COMMENTS:       Time_Scale=10.0000 and Time_Error=10.0000.
COMMENTS:       Possibly real GRB event
COMMENTS:       
COMMENTS:        NOTE: This INTEGRAL event is spatially(0.00<0.1deg) and
+temporally(8.0<100sec) coincident with the SWIFT_BAT event (trignum=585834).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 06 Feb 14 07:24:11 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     585834,   Seg_Num: 0
GRB_RA:          145.350d {+09h 41m 24s} (J2000),
                 145.634d {+09h 42m 32s} (current),
                 144.335d {+09h 37m 20s} (1950)
GRB_DEC:         +66.750d {+66d 45' 01"} (J2000),
                 +66.686d {+66d 41' 08"} (current),
                 +66.978d {+66d 58' 41"} (1950)
GRB_DATE:        16694 TJD;    37 DOY;   14/02/06
GRB_TIME:        26240.16 SOD {07:17:20.16} UT
TRIGGER_INDEX:   146
GRB_PHI:          40.20 [deg]
GRB_THETA:         4.24 [deg]
DELTA_TIME:      -32702.00 [sec]
TRIGGER_DUR:     1.024 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     52.82 [sigma]
IMAGE_SIGNIF:    18.35 [sigma]
LC_URL:          sw00585834000msb.lc
SUN_POSTN:       319.87d {+21h 19m 29s}  -15.61d {-15d 36' 39"}
SUN_DIST:        128.78 [deg]   Sun_angle= 11.6 [hr] (West of Sun)
MOON_POSTN:       39.49d {+02h 37m 58s}  +14.57d {+14d 34' 22"}
MOON_DIST:        82.84 [deg]
MOON_ILLUM:      45 [%]
GAL_COORDS:      145.62, 41.02 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      119.61, 48.91 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Lightcurve.  
COMMENTS:           
COMMENTS:        The next comments were copied from the BAT_POS Notice:  
COMMENTS:        This is a rate trigger.  
COMMENTS:        A point_source was found.  
COMMENTS:        This does not match any source in the on-board catalog.  
COMMENTS:        This does not match any source in the ground catalog.  
COMMENTS:        This is a GRB.  
COMMENTS:        This trigger occurred at longitude,latitude = 249.63,20.60 [deg].  
COMMENTS:        The 3rd packet (of 3) was missing in the lightcurve data stream.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 06 Feb 14 07:31:28 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     585834,   Seg_Num: 0
POINT_RA:        145.352d {+09h 41m 24s} (J2000)
POINT_DEC:       +66.749d {+66d 44' 55"} (J2000)
POINT_ROLL:      6.778d
IMG_START_DATE:  16694 TJD;    37 DOY;   14/02/06
IMG_START_TIME:  26292.43 SOD {07:18:12.43} UT,   52.3 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        2.001
N_STARS:         190
X_OFFSET:        480 [pixels]
Y_OFFSET:        552 [pixels]
X_MAX:           1439 [pixels]
Y_MAX:           1511 [pixels]
DET_THRESH:      12
PHOTO_THRESH:    6
SL_URL:          sw00585834000msufc0052.fits
SUN_POSTN:       319.87d {+21h 19m 30s}  -15.61d {-15d 36' 34"}
SUN_DIST:        128.78 [deg]   Sun_angle= 11.6 [hr] (West of Sun)
MOON_POSTN:       39.56d {+02h 38m 14s}  +14.59d {+14d 35' 14"}
MOON_DIST:        82.81 [deg]
MOON_ILLUM:      45 [%]
GAL_COORDS:      145.62, 41.02 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      119.61, 48.91 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 06 Feb 14 07:32:48 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     585834,   Seg_Num: 0
POINT_RA:        145.352d {+09h 41m 24s} (J2000)
POINT_DEC:       +66.749d {+66d 44' 55"} (J2000)
ROLL:            6.778d
IMG_START_DATE:  16694 TJD;    37 DOY;   14/02/06
IMG_START_TIME:  26292.43 SOD {07:18:12.43} UT,   52.3 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     413363904
X_OFFSET:        830 [pixels]
Y_OFFSET:        795 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       990
Y_GRB_POS:       955
BINNING_INDEX:   1
IM_URL:          sw00585834000msuni0064.fits
SUN_POSTN:       319.88d {+21h 19m 30s}  -15.61d {-15d 36' 33"}
SUN_DIST:        128.78 [deg]   Sun_angle= 11.6 [hr] (West of Sun)
MOON_POSTN:       39.57d {+02h 38m 17s}  +14.59d {+14d 35' 23"}
MOON_DIST:        82.80 [deg]
MOON_ILLUM:      45 [%]
GAL_COORDS:      145.62, 41.02 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      119.61, 48.91 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Image.  
COMMENTS:        The GRB Position came from the XRT Position Command.  
COMMENTS:        The image has 2x2 binning (compression).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 06 Feb 14 07:35:57 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     585834,   Seg_Num: 0
POINT_RA:        145.349d {+09h 41m 24s} (J2000)
POINT_DEC:       +66.750d {+66d 45' 01"} (J2000)
POINT_ROLL:      6.774d
IMG_START_DATE:  16694 TJD;    37 DOY;   14/02/06
IMG_START_TIME:  26504.58 SOD {07:21:44.58} UT,   264.4 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        0.685
N_STARS:         190
X_OFFSET:        510 [pixels]
Y_OFFSET:        475 [pixels]
X_MAX:           1469 [pixels]
Y_MAX:           1434 [pixels]
DET_THRESH:      7
PHOTO_THRESH:    3
SL_URL:          sw00585834000msufc0264.fits
SUN_POSTN:       319.88d {+21h 19m 31s}  -15.61d {-15d 36' 30"}
SUN_DIST:        128.78 [deg]   Sun_angle= 11.6 [hr] (West of Sun)
MOON_POSTN:       39.60d {+02h 38m 24s}  +14.60d {+14d 35' 45"}
MOON_DIST:        82.78 [deg]
MOON_ILLUM:      45 [%]
GAL_COORDS:      145.62, 41.01 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      119.61, 48.91 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 06 Feb 14 07:37:03 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     585834,   Seg_Num: 0
POINT_RA:        145.349d {+09h 41m 24s} (J2000)
POINT_DEC:       +66.750d {+66d 45' 01"} (J2000)
ROLL:            6.774d
IMG_START_DATE:  16694 TJD;    37 DOY;   14/02/06
IMG_START_TIME:  26504.58 SOD {07:21:44.58} UT,   264.4 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     413364116
X_OFFSET:        830 [pixels]
Y_OFFSET:        795 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       990
Y_GRB_POS:       955
BINNING_INDEX:   1
IM_URL:          sw00585834000msuni0276.fits
SUN_POSTN:       319.88d {+21h 19m 31s}  -15.61d {-15d 36' 29"}
SUN_DIST:        128.78 [deg]   Sun_angle= 11.6 [hr] (West of Sun)
MOON_POSTN:       39.61d {+02h 38m 26s}  +14.60d {+14d 35' 53"}
MOON_DIST:        82.78 [deg]
MOON_ILLUM:      45 [%]
GAL_COORDS:      145.62, 41.01 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      119.61, 48.91 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Image.  
COMMENTS:        The GRB Position came from the XRT Position Command.  
COMMENTS:        The image has 2x2 binning (compression).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 06 Feb 14 07:38:48 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     585834,   Seg_Num: 0
POINT_RA:        145.349d {+09h 41m 24s} (J2000)
POINT_DEC:       +66.751d {+66d 45' 02"} (J2000)
POINT_ROLL:      6.774d
IMG_START_DATE:  16694 TJD;    37 DOY;   14/02/06
IMG_START_TIME:  27109.34 SOD {07:31:49.34} UT,   869.2 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        1.811
N_STARS:         190
X_OFFSET:        270 [pixels]
Y_OFFSET:        235 [pixels]
X_MAX:           1709 [pixels]
Y_MAX:           1674 [pixels]
DET_THRESH:      11
PHOTO_THRESH:    6
SL_URL:          sw00585834000msufc0869.fits
SUN_POSTN:       319.88d {+21h 19m 31s}  -15.61d {-15d 36' 28"}
SUN_DIST:        128.78 [deg]   Sun_angle= 11.6 [hr] (West of Sun)
MOON_POSTN:       39.62d {+02h 38m 30s}  +14.60d {+14d 36' 06"}
MOON_DIST:        82.77 [deg]
MOON_ILLUM:      45 [%]
GAL_COORDS:      145.62, 41.01 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      119.61, 48.91 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 06 Feb 14 07:40:09 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     585834,   Seg_Num: 0
POINT_RA:        145.349d {+09h 41m 24s} (J2000)
POINT_DEC:       +66.751d {+66d 45' 02"} (J2000)
ROLL:            6.774d
IMG_START_DATE:  16694 TJD;    37 DOY;   14/02/06
IMG_START_TIME:  27109.34 SOD {07:31:49.34} UT,   869.2 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     413364720
X_OFFSET:        829 [pixels]
Y_OFFSET:        794 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       989
Y_GRB_POS:       954
BINNING_INDEX:   1
IM_URL:          sw00585834000msuni0881.fits
SUN_POSTN:       319.88d {+21h 19m 31s}  -15.61d {-15d 36' 27"}
SUN_DIST:        128.78 [deg]   Sun_angle= 11.6 [hr] (West of Sun)
MOON_POSTN:       39.64d {+02h 38m 33s}  +14.60d {+14d 36' 15"}
MOON_DIST:        82.76 [deg]
MOON_ILLUM:      45 [%]
GAL_COORDS:      145.62, 41.01 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      119.61, 48.91 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Image.  
COMMENTS:        The GRB Position came from the Window Position in the Mode Command.  
COMMENTS:        The image has 2x2 binning (compression).

GCN Circular #15784
A. Y. Lien (NASA/GSFC/ORAU), S. D. Barthelmy (GSFC), M. M. Chester (PSU), V. D'Elia (ASDC), D. Malesani (DARK/NBI), A. Maselli (INAF-IASFPA), K. L. Page (U Leicester), D. M. Palmer (LANL) and M. H. Siegel (PSU) report on behalf of the Swift Team:
At 07:17:20 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 140206A (trigger=585834). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 145.350, +66.750 which is
```
   RA(J2000)  =  09h 41m 24s
   Dec(J2000) = +66d 45' 01"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve shows a multi-peaked structure with a duration of about 80 sec. The peak count rate was ~19000 counts/sec (15-350 keV), at ~60 sec after the trigger.
The XRT began observing the field at 07:18:04.0 UT, 43.9 seconds after the BAT trigger. Using promptly downlinked data we find a bright, uncatalogued X-ray source located at RA, Dec 145.33438, 66.76074 which is equivalent to:
```
   RA(J2000)  = 09h 41m 20.25s
   Dec(J2000) = +66d 45' 38.7"
```
with an uncertainty of 3.7 arcseconds (radius, 90% containment). This location is 44 arcseconds from the BAT onboard position, within the BAT error circle. This position may be improved as more data are received; the latest position is available at http://www.swift.ac.uk/sper. We cannot determine whether the source is fading at the present time.
A power-law fit to a spectrum formed from promptly downlinked event data gives a column density consistent with the Galactic value of 4.79 x 10^20 cm^-2 (Kalberla et al. 2005).
The initial flux in the 2.5 s image was 9.62e-09 erg cm^-2 s^-1 (0.2-10 keV).
UVOT results are not available at this time.
Burst Advocate for this burst is A. Y. Lien (yarleen AT gmail.com). Please contact the BA by email if you require additional information regarding Swift followup of this burst. In extremely urgent cases, after trying the Burst Advocate, you can contact the Swift PI by phone (see Swift TOO web site for information: http://www.swift.psu.edu/too.html.)

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 06 Feb 14 07:54:33 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     585834,   Seg_Num: 0
GRB_RA:          145.3343d {+09h 41m 20.23s} (J2000),
                 145.6184d {+09h 42m 28.41s} (current),
                 144.3183d {+09h 37m 16.38s} (1950)
GRB_DEC:         +66.7607d {+66d 45' 38.5"} (J2000),
                 +66.6960d {+66d 41' 45.6"} (current),
                 +66.9883d {+66d 59' 17.8"} (1950)
GRB_ERROR:       3.7 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  16694 TJD;    37 DOY;   14/02/06
IMG_START_TIME:  27442.00 SOD {07:37:22.00} UT,   1201.8 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       319.89d {+21h 19m 34s}  -15.60d {-15d 36' 16"}
SUN_DIST:        128.77 [deg]   Sun_angle= 11.6 [hr] (West of Sun)
MOON_POSTN:       39.76d {+02h 39m 03s}  +14.63d {+14d 37' 56"}
MOON_DIST:        82.68 [deg]
MOON_ILLUM:      45 [%]
GAL_COORDS:      145.62, 41.00 [deg] galactic lon,lat of the burst
ECL_COORDS:      119.59, 48.92 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        This is an Update Notice -- the RA,Dec values herein supersede the previous XRT_POS Notice.  
COMMENTS:        TAM values, flux and significance fields are not valid.  
COMMENTS:        This position was automatically generated on the ground using  
COMMENTS:        Photon Counting data telemetered via TDRSS (SPER data).  
COMMENTS:        See http://www.swift.ac.uk/sper/docs.php for details.  
COMMENTS:        The probability that this is a serendipitous source in the  
COMMENTS:        SPER window is 0.58% < P(seren) < 1.1%.

GCN NOTICE

 
TITLE:          GCN/INTEGRAL NOTICE
NOTICE_DATE:    Thu 06 Feb 14 07:56:57 UT
NOTICE_TYPE:    INTEGRAL Offline
TRIGGER_NUM:    6442,   Sub_Num: 3
GRB_RA:         145.3042d {+09h 41m 13s} (J2000),
                145.5884d {+09h 42m 21s} (current),
                144.2878d {+09h 37m 09s} (1950)
GRB_DEC:        +66.7652d {+66d 45' 55"} (J2000),
                +66.7005d {+66d 42' 02"} (current),
                +66.9926d {+66d 59' 34"} (1950)
GRB_ERROR:      0.80 [arcmin, radius, statistical only]
GRB_INTEN:      37.46 [sigma] 
GRB_TIME:       26303.08 SOD {07:18:23.08} UT
GRB_DATE:       16694 TJD;    37 DOY;   14/02/06
SC_RA:          152.63 [deg] (J2000) 
SC_DEC:          71.13 [deg] (J2000) 
SUN_POSTN:      319.89d {+21h 19m 34s}  -15.60d {-15d 36' 14"}
SUN_DIST:       128.77 [deg]   Sun_angle= 11.6 [hr] (West of Sun)
MOON_POSTN:      39.79d {+02h 39m 09s}  +14.64d {+14d 38' 13"}
MOON_DIST:       82.65 [deg]
GAL_COORDS:     145.62, 40.99 [deg] galactic lon,lat of the burst
ECL_COORDS:     119.58, 48.92 [deg] ecliptic lon,lat of the burst
COMMENTS:       INTEGRAL GRB Coordinates.
COMMENTS:       Time_Scale=10.0000 and Time_Error=10.0000.
COMMENTS:       refined_coordinates_after_offline_analysis
COMMENTS:       
COMMENTS:        NOTE: This INTEGRAL event is spatially(0.00<0.1deg) and temporally(8.0<100sec) coincident with the SWIFT_BAT event (trignum=585834).

GCN Circular #15785
D. Gotz (IASF Milano) S.Mereghetti (IASF-Milano), E.Bozzo, C.Ferrigno, M. Tuerler (ISDC, Versoix), and J.Borkowski (CAMK, Torun) on behalf of the IBAS Localization Team report: a long gamma ray burst lasting at least 60 s 0.8 s has been detected by IBAS in the IBIS/ISGRI data at 07:17:26 UT of February 6th. The refined coordinates (J2000) are:
```
R.A.= 145.3043  deg
DEC.= +66.7652  deg
```
with an uncertainty of 0.8 arcmin (90% c.l.). This position is consistent with the Swift/XRT one reported for the same event (Lien et al., GCN 15784). The burst has been detected at the very beginning of the INTEGRAL orbit, just outside the radiation belts. Therefore the data are polluted by a high particle background, implying a high level of saturation of the IBIS/ISGRI telemetry. Hence no detailed information about the GRB duration can be derived at this stage. A preliminary lower limit on its fluence is 2x10e-6 erg/cmsq in the 20-200 keV energy band. A plot of the light curve will be posted at http://ibas.iasf-milano.inaf.it/IBAS_Results.html
GCN Circular #15786
A. Oksanen, P. Kehusmaa and C. Harlingten on behalf of Searchlight Observatory Network report:
We detect an afterglow candidate on Rc filtered images taken at 2014-02-06T08:33:09 with a 40 cm robotic telescope located in New Mexico, USA.
```
R.A. = 09 41 20 (J2000.0)
Decl = 66 45 38
```
The position matches with the XRT position given by A. Y. Lien et. al (GCN 15784).
Approximate magnitude R=18, seem to be fading. Observations and analysis is ongoing.
GCN Circular #15787
S. R. Oates (MSSL-UCL) and A. Y. Lien (NASA/GSFC/ORAU) report on behalf of the Swift/UVOT team:
UVOT took a finding chart exposure of 150 seconds with the White filter starting 54 seconds after the BAT trigger. There is a candidate afterglow in the finding chart image:
```
     RA (J2000)   9:41:20.24 = 145.33433 
    Dec (J2000)  +66:45:38.5 = 66.76069  
```
with an estimated uncertainty of 0.5 arcsec (radius, 90% confidence). This position is consistent with the XRT position (Lien et al., GCN 15784) and the optical afterglow position reported by Oksanen et al (GCN 15786). The estimated magnitude is 15.76 with a 1-sigma error of about 0.03. No correction has been made for the expected extinction corresponding to E(B-V) of 0.12.
GCN Circular #15788
V.Yurkov, Yu.Sergienko, D.Varda, E.Sinyakov Blagoveschensk Educational State University, Blagoveschensk
E. Gorbovskoy, V. Lipunov, V.Kornilov, D.Kuvshinov, A.Belinski, N.Tyurina, N.Shatskiy, P.Balanutsa, D.Zimnukhov, A.Kuznetsov, V.V.Chazov, D.Denisenko, A.Sankovich Sternberg Astronomical Institute, Moscow State University
K.Ivanov, S.Yazev, N.M.Budnev, O.Gres, O.Chuvalaev, V.A.Poleshchuk Irkutsk State University
V.Krushinski, I.Zalozhnih, A. Popov Ural Federal University, Kourovka
A. Tlatov, A.V. Parhomenko, D. Dormidontov, V.Sennik Kislovodsk Solar Station of the Pulkovo Observatory
Hugo Levato and Carlos Saffe Instituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE)
Claudio Mallamaci, Carlos Lopez and Federico Podest Observatorio Astronomico Felix Aguilar (OAFA)
MASTER II robotic telescope (MASTER-Net: http://observ.pereplet.ru) located in Blagoveschensk was pointed to the GRB140206A (Lien et. al GCN 15784 , Gotz et. al GCN 15784) 2h 16m (8153 s) after trigger time at 2014-02-06 09:33:13 UT directly after sunset. On our first sets we found optical transient Oksanen et. al. GCN 15786.
The coordinate is:
```
RA= 09h 41m 20.21s
DEC= +66d 45m 37.7s
ERROR= 0.5 arcsec
Mag=18.5 +- 0.25m
```
Our unfiltered magnitude is calibrated by USNO B1.0 catalog by a parity 0.8R + 0.2B.
The message may be cited.
GCN Circular #15789
D. Xu (DARK/NBI), G.-J. Feng, J. Xu, A. Esamdin, L. Ma (XAO) report:
We observed the field of GRB 140206A (Lien et al., GCN 15784; Gotz et al., GCN 15785) using the 1m telescope located on Mt. Nanshan, Xinjiang, China. Observations started at 12:30:16 UT on 2014-02-06 (i.e., 5.216 hr after the burst), and a series of R-band frames were obtained.
The optical afterglow (Oksanen et al., GCN 15786; Oates & Lien, GCN 15787) is clearly detected in each of our frames, and it decayed from M(R)=18.48+/-0.10 to m(R)=18.64+/-0.10 from 5.40 hr to 5.71 hr post-burst, calibrated with two nearby SDSS stars. Compared with the previous measurements in GCNs 15786 & 15788, it shows that so far the afterglow has been decaying rather slowly and thus spectroscopy may be doable even for a 2m class telescope in the coming hours.
Further observations are ongoing.
GCN Circular #15790
A. von Kienlin (MPE) reports on behalf of the Fermi GBM Team:
"At 06:36:12.84 UT on 06 February 2014, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 140206A (trigger 413361375 / 140206275).
The on-ground calculated location, using the GBM trigger data, is RA = 314.6, DEC = -6.6 (J2000 degrees, equivalent to 20 h 58 m, -6 d 36 '), with an uncertainty of 1.9 degrees (radius, 1-sigma containment, statistical only; there is additionally a systematic error which is currently estimated to be 2 to 3 degrees).
The trigger resulted in an Autonomous Repoint Request (ARR) that was accepted and the spacecraft slewed to the GBM in-flight location. The initial angle from the LAT boresight was 46 deg from the Fermi/GBM position.
The GBM light curve is multi-peaked with a duration (T90) of about 120 s (50-300 keV). The time-averaged spectrum from T0+0.003 s to T0+44.993 s is well fit by a Band function with Epeak = 296.6 +/- 7.3 keV, alpha = -0.97 +/-0.01 and beta = -2.14 +/-0.03
The event fluence (10-1000 keV) in this time interval is (0.993 +/- 0.005)E-04 erg/cm^2. The 1.024-sec peak photon flux measured starting from T0+13.44 s in the 10-1000 keV band is 42.4 +/- 0.4 ph/s/cm^2.
The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."
GCN Circular #15791
E. Bissaldi (University & INFN Trieste), G. Vianello (Stanford University), F. Longo (University & INFN Trieste), R. Desiante (Udine University & INFN Trieste), J. Racusin (NASA/GSFC) report on behalf of the Fermi-LAT team:
On February 6th, 2014, Fermi LAT detected high-energy emission from GRB 140206A, which triggered GBM at 06:36:12.84 UT (trigger 413361375/140206275, von Kienlin et al., GCN 15790). GBM also initiated an autonomous repoint of Fermi at 06:36:25 UT due to high peak flux.
The best LAT on-ground location is found to be:
(RA, Dec) = 315.26, -8.51 (J2000)
with an error radius of 0.23 deg (90% containment, statistical error only). This was 45 deg from the LAT boresight at the time of the trigger.
More than 25 photons above 100 MeV and 2 photons above 1 GeV are observed within 600 seconds. The highest-energy photon is a 3.5 GeV event, which is observed 460 seconds after the GBM trigger.
Unfortunately, the GRB position is too close to the Sun (8.2 deg) for Swift to conduct follow-up observations.
The Fermi LAT point of contact for this burst is Elisabetta Bissaldi (Elisabetta.Bissaldi@ts.infn.it ).
The Fermi LAT is a pair conversion telescope designed to cover the energy band from 20 MeV to greater than 300 GeV. It is the product of an international collaboration between NASA and DOE in the U.S. and many scientific institutions across France, Italy, Japan and Sweden.
GCN Circular #15792
A. Volnova (IKI), A. Stepura (UAFO, ISON), A. Matkin (UAFO, ISON), I. Molotov (KIAM), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration:
We observed the afterglow (Oksanen et al., GCN 15786; Oate et al., GCN 15787) of the Swift and INTEGRAL GRB 140206A (Lien et al., GCN 15784; Gotz et al., GCN 15785) with VT-50 (0.5m) telescope of UAFO/ISON-Ussuriysk observatory starting on Feb. 6 (UT) 09:20:05, i.e. ~2 hours after burst trigger. We took unfiltered images of 30s exposures. In stacked frames we clearly detect afterglow. A preliminary photometry of the afterglow is following:
```
T_start               T0+       Filter, Exposure,   OT,     OT_err
(UT)                  (mid, d)            (s)

2014-02-06T09:20:39   0.08783   none     9*30       17.76   0.24
2014-02-06T10:52:26   0.15309   none    19*30       18.06   0.08
```
The photometry is based on reference stars SDSS-DR9, (R mag, transformation by Lupton 2005)
```
N   SDSS_id                       R(Lupton)errR
1   J094123.75+664429.9    15.441+/-0.013
2   J094126.54+664410.8    13.837+/-0.014
3   J094131.29+664857.0    13.972+/-0.011
```
Observations continuing. The finding chart can be found in http://grb.rssi.ru/GRB140206A/grb140206A_VT50_fc.png
GCN Circular #15793
J.P. Osborne, A.P. Beardmore, P.A. Evans and M.R. Goad (U. Leicester) report on behalf of the Swift-XRT team.
Using 2549 s of XRT Photon Counting mode data and 3 UVOT images for GRB 140206A, we find an astrometrically corrected X-ray position (using the XRT-UVOT alignment and matching UVOT field sources to the USNO-B1 catalogue): RA, Dec = 145.33452, +66.76101 which is equivalent to:
```
RA (J2000): 09h 41m 20.29s
Dec (J2000): +66d 45' 39.6"
```
with an uncertainty of 1.4 arcsec (radius, 90% confidence).
This position may be improved as more data are received. The latest position can be viewed at http://www.swift.ac.uk/xrt_positions. Position enhancement is described by Goad et al. (2007, A&A, 476, 1401) and Evans et al. (2009, MNRAS, 397, 1177).
This circular was automatically generated, and is an official product of the Swift-XRT team.
GCN Circular #15794
R. Ruffini, C.L. Bianco, M. Enderli, M. Kovacevic, M. Muccino, A.V. Penacchioni, G.B. Pisani, J.A. Rueda, Y. Wang report:
The late Swift/XRT observations of GRB 140206A (1,2) evidences the fullfillment of the IGC paradigm (3,4). A preliminary overlapping of its X-ray (0.3-10 keV in rest-frame) luminosity with the one of GRB 090618, namely an IGC prototype (5), gives an estimate of the redshift of z~0.6 (see Fig. 1 <http://www.icranet.org/images/GCN/GRB140206A.pdf>).
As a consequence, a supernova associated to GRB 140206A is expected to emerge after 16 days after the trigger.
Continuous monitoring and complementary observations in all possible wavelengths are encouraged.
```
References:
(1) Lien et al., GCN 15784
(2) Osborne et al., GCN 15793
(3) Rueda & R. Ruffini, ApJLett, 758, L7 (2012)
(4) Pisani et al., A&A, 552, L5 (2013)
(5) Izzo et al., A&A, 548, L5 (2012)
```
GCN Circular #15795
S. R. Oates (UCL-MSSL) and A. Y. Lien (NASA/GSFC/ORAU) report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 140206A 52 s after the BAT trigger (Lien et al., GCN Circ. 15784). A source consistent with the XRT position (Osborne et al. GCN Circ. 15793) and the optical positions reported by Oksanen et al. (GCN 15786) and Yurkov et al. (GCN 15788) is detected in the initial UVOT exposures. The lack of detections in the UV filters suggests a redshift ~2 - 3.
The preliminary UVOT position is:
```
  RA  (J2000) =  09:41:20.26 = 145.33442 (deg.)
  Dec (J2000) = +66:45:38.6  =  66.76072 (deg.)
```
with an estimated uncertainty of 0.50 arc sec. (radius, 90% confidence).
Preliminary detections and 3-sigma upper limits using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the early exposures are:
```
Filter         T_start(s)   T_stop(s)      Exp(s)           Mag

white               52          202          147         15.88 +/- 0.02
v                  596          616           20         15.75 +/- 0.11
b                  522          542           20         16.51 +/- 0.09
u                  264          514          246         16.18 +/- 0.04
w1                 645        17944          963         >20.9
m2               16137        24450         1607         >21.2
w2               21898        22798          886         >21.0
```
The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.14 in the direction of the burst (Schlegel et al. 1998).
GCN Circular #15796
A. von Kienlin (MPE) and P. N. Bhat (UAH) report on behalf of the Fermi GBM Team:
"At 07:18:15.98 UT on 06 February 2014, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 140206A (trigger 413363898 / 140206304), which was also detected by the Swift (Lien et al. 2014, GCN 15784) The GBM on-ground location is consistent with the Swift position.
The angle from the Fermi LAT boresight is 123 degrees.
The GBM light curve shows a single pulse with a duration (T90) of about 27 s (50-300 keV). The time-averaged spectrum from T0-0.5 s to T0+14.3 s is best fit by a Band function with Epeak = 120 +/- 6 keV, alpha = 0.2 +/- 0.1, and beta = -2.4 +/-0.1.
The event fluence (10-1000 keV) in this time interval is (1.47 +/- 0.03)E-05 erg/cm^2. The 1-sec peak photon flux measured starting from T0+4.9 s in the 10-1000 keV band is 17.4 +/- 0.5 ph/s/cm^2.
The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."
GCN Circular #15797
E. Sonbas (Adiyaman Univ.), T. Guver (Istanbul Univ.), U. Temiz (Cukurova Univ.), E. Gogus (Sabanci Univ.), M. Kocak (TUG), O. Erece (Akdeniz Univ.), Z. Eker (Akdeniz Univ.) report on behalf of a larger collaboration
We observed the field of Swift GRB 140206A (Lien et al., GCN#15784) with the 1.0 meter T100 telescope (Bakirlitepe, TUBITAK National Observatory, Turkey), starting February, 06, 16:33:24 UT (~ 9.268 hours after the trigger). Observations were carried out in the R filter under good weather conditions. The afterglow is clearly detected in 300 s in the R band images at a position that is consistent with Oksanen et al. GCN#15786 and Oates et al., GCN#15787
Using USNO-B1 star USNO-B1 1567-0128093 (R.A.=9:41:23.33, Dec=+66:44:32.31) in the field, the magnitudes of the OT were estimated as follows;
t-t0 (hr) exp.(s) filt mag err (+/-)
9.590 300 R 18.65 0.05
9.689 300 R 18.77 0.06
9.788 300 R 18.75 0.06
10.380 300 R 18.89 0.06
Further observations using the same filter are ongoing.
We are grateful to TUBITAK National Observatory for prompt scheduling the observations and technical support.
GCN Circular #15798
A. Maselli (INAF-IASFPA), A. Y. Lien (NASA/GSFC/ORAU) and P. A. Evans (U. Leicester) report on behalf of the Swift-XRT team:
We have analysed 14 ks of XRT data for GRB 140206A (Lien et al. GCN Circ. 15784), from 33 s to 30.2 ks after the BAT trigger. The data comprise 1.2 ks in Windowed Timing (WT) mode (the first 9 s were taken while Swift was slewing) with the remainder in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Osborne et al. (GCN Circ. 15793).
The light curve shows initial flaring activity with two flares peaking at about 61 s and 223 s after the trigger. The underlying emission can be modelled with a broken power-law decay: a flat decay with an index alpha=0.756 (+0.026, -0.028), a break at T+10.7 ks and a late-time decay with an index 1.31 (+0.15, -0.12).
A spectrum formed from the WT mode data can be fitted with an absorbed power-law with a photon spectral index of 1.762 (+/-0.028). The best-fitting absorption column is 1.25 (+/-0.07) x 10^21 cm^-2, in excess of the Galactic value of 4.8 x 10^20 cm^-2 (Kalberla et al. 2005). The PC mode spectrum has a photon index of 1.95 (+0.08, -0.07) and a best-fitting absorption column of 1.22 (+0.19, -0.18) x 10^21 cm^-2. The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 3.8 x 10^-11 (4.9 x 10^-11) erg cm^-2 count^-1.
A summary of the PC-mode spectrum is thus:
```
Total column:	     1.22 (+0.19, -0.18) x 10^21 cm^-2
Galactic foreground: 4.8 x 10^20 cm^-2
Excess significance: 6.6 sigma
Photon index:	     1.95 (+0.08, -0.07)
```
If the light curve continues to decay with a power-law decay index of 1.31, the count rate at T+24 hours will be 0.088 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 3.3 x 10^-12 (4.3 x 10^-12) erg cm^-2 s^-1.
The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00585834.
This circular is an official product of the Swift-XRT team.
GCN Circular #15799
P. D'Avanzo, S. Covino, A. Melandri (INAF/OAB) L. Di Fabrizio (INAF/TNG) report on behalf of the CIBO collaboration:
We observed the field of GRB 140206A (Lien et al., GCN 15784; Gotz et al. GCN 15785) using the DOLORES camera on the 3.6-m TNG Telescope at Canary Islands.
The optical afterglow (Oates & Lien GCN 15787; Yurkov et al. GCN 15788; Xu et al. GCN 15789; Volnova et al. GCN 15792; Oates & Lien GCN 15795; Sonbas et al. GCN 15797) is clearly detected with R = 18.7 +/- 0.1 (calibrated against the USNOB1 catalogue) at t-t0 = 12.52 hours.
Further observations are ongoing.
GCN Circular #15800
D. Malesani, D. Xu, J. P. U. Fynbo (DARK/NBI), A. de Ugarte Postigo (IAA/CSIC and DARK/NBI), S. Schulze (PUC and MCSS), A. Finoguenov (U. Helsinki), P. Jakobsson (U. Iceland), A. Melandri (INAF/OABr), A. Cucchiara (NASA/GSFC), report on behalf of a larger collaboration:
We observed the field of GRB 140206A (Lien et al., GCN 15784; Gotz et al., GCN 15785; Troja et al., GCN 13243) with the Nordic Optical Telescope (NOT) equipped with ALFOSC. Observations started at 19:56 UT on February 6 (i.e., 12.66 hr after the burst).
We first obtained a 100-s image in R band. We clearly detect the source reported in Oksanen et al. (GCN 15786). The source has faded to 19.15 +/- 0.10 mag (Vega magnitude), based on nearby USNO stars.
We aso obtained an optical spectrum, with a total exposure of 2 x 1800 s, using grism #4 and a blocking filter covering the wavelength range 3750 - 9000 AA at a resolution of 8.1 AA. The mid exposure time is 13.6 hr after the GRB.
We detect several absorption lines which we interpret as due to Lyalpha, Si II, C II, C IV, Al II, Fe II at a common redshift of 2.73.
This measurement is not consistent with the predicted theoretical value by Ruffini et al. (GCN 15794).
We thank Carlos Perez, John Teltin, and Amanda Djupvik (NOT) for excellent support with the observations.
GCN Circular #15801
G. Masi (Ceccano, Italy) and F. Nocentini (Frosinone, Italy) report:
On Feb. 6.9216 2014 UT, we imaged the field around GRB 140206A (Lien et. al GCN 15784 , Gotz et. al GCN 15784) remotely using the the 0.43m-f/6.8 robotic unit part of the Virtual Telescope robotic facility in Italy.
The source is visible on 300 seconds unfiltered CCD images at the following coordinates (J2000.0):
```
R.A. = 09 41 20.23
Decl. +66 45 38.5
```
We also performed photometry, assuming R-mags from UCAC-4 for the stars in the field, getting an estimate for the magnitude of 18.9CR).
Observations are ongoing.
This message can be cited
GCN Circular #15802
V. D'Elia (INAF/OAR & ASI/ASDC), P. D'Avanzo, S. Covino, A. Melandri (INAF-OAB), S. D. Vergani (CNRS/GEPI), L. Di Fabrizio (INAF/TNG) report on behalf of the CIBO collaboration:
We report further observations of the field of GRB 140206A (Lien et al., GCN 15784; Gotz et al., GCN 15785) with the Telescopio Nazionale Galileo (TNG) equipped with DOLORES.
We obtained a spectrum of the optical source reported in D'Avanzo et al. (GCN Circ. 15799), with a total exposure of 1800 s, using the grism LR_B covering the wavelength range 3000 - 8000 AA. The observation started at 2014-02-06T19:53:07, i.e., ~12.6 hrs after the GRB.
We detect several absorption lines which we interpret as due to Ly-alpha, NV, Si II, C II, SiIV, C IV, Al II, AlII and Fe II at a common redshift of 2.74. In addition, we also detect at the same redshift fine structure lines from excited levels of SiII and FeII, confirming that this is the redshift of the GRB host galaxy. Our result is in perfect agreement with the reported value by Malesani et al. (GCN 15800)
Finally, we also detect a strong intervening Ly-alpha absorber at z~2.32
GCN Circular #15803
Y. Saito, T. Yoshii, Y. Tachibana, S. Kurita, K. Ito, R. Usui, K. Ishikawa, T. Tanigawa, Y. Yano, Y. Yatsu, and N. Kawai (Tokyo Tech) report on behalf of the MITSuME collaboration:
We observed the field of GRB 140206A (A. Y. Lien et al., GCNC 15784) with the optical three color (g, Rc, and Ic) CCD cameras mounted on the MITSuME 50 cm telescope of Akeno Observatory, Yamanashi, Japan.
The observation started on 2014-02-06 15:46:53 UT ( ~8.5 hour after the burst) and we detected the previously reported afterglow. The measured magnitudes were listed as follows.
```
T0+[hour]     MID-UT      T-EXP[sec]          g'           Rc               Ic
-----------------------------------------------------------------------------------------------------
  ~8.5       17:36:31      199x60        20.74+/-0.14   18.88+/-0.08  18.37+/-0.10
-----------------------------------------------------------------------------------------------------
```
(The photon flux were calibrated by SDSS(g') and GSC2.3(Rc, Ic) catalog.)
GCN Circular #15805
T. Sakamoto (AGU), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA), A. Y. Lien (NASA/UMBC), C. B. Markwardt (GSFC), D. M. Palmer (LANL), M. Stamatikos (OSU), J. Tueller (GSFC), T. N. Ukwatta (MSU) (i.e. the Swift-BAT team):
Using the data set from T-240 to T+962 sec from the recent telemetry downlink, we report further analysis of BAT GRB 140206A (trigger #585834) (Lien, et al., GCN Circ. 15784). The BAT ground-calculated position is RA, Dec = 145.321, 66.762 deg which is
```
 RA(J2000)  =  09h 41m 16.9s
 Dec(J2000) = +66d 45' 42.7"
```
with an uncertainty of 1.0 arcmin, (radius, sys+stat, 90% containment). The partial coding was 100%.
The mask-weighted light curve shows a multi-peaked structure with roughly three main pulse durations. The first pulse duration starts at ~T-15 and ends at ~T+25 sec, and consists of roughly three to four peaks. The second one starts at ~T+50 sec, peaks at ~T+60 sec, and ends at ~T+90 sec. The third weaker pulse peaks at ~T+210 sec, with a long low-level tail out to T+400 sec. T90 (15-350 keV) is 93.6 +- 13.8 sec (estimated error including systematics).
The time-averaged spectrum from T-37.2 to T+256.1 sec is best fit by a power law with an exponential cutoff. This fit gives a photon index 1.04 +- 0.15, and Epeak of 100.9 +- 14.5 keV (chi squared 52.76 for 56 d.o.f.). For this model the total fluence in the 15-150 keV band is 1.6 +- 0.03 x 10^-5 erg/cm2 and the 1-sec peak flux measured from T+60.80 sec in the 15-150 keV band is 19.4 +- 0.5 ph/cm2/sec. A fit to a simple power law gives a photon index of 1.58 +- 0.03 (chi squared 91.21 for 57 d.o.f.). All the quoted errors are at the 90% confidence level.
The results of the batgrbproduct analysis are available at http://gcn.gsfc.nasa.gov/notices_s/585834/BA/
GCN Circular #15806
D. Kopac, A. Gomboc (U. Ljubljana), C. Guidorzi (U. Ferrara), A. Melandri (INAF-OAB), I. A. Steele, C. G. Mundell (LJMU), on behalf of a large collaboration report:
The 2-m Liverpool Telescope automatically observed Swift-INTEGRAL-Fermi GRB 140206A (Lien et al., GCN 15784; Gotz et al., GCN 15785), starting at 07:19:30 UT (~2.2 min after the burst trigger).
We clearly detect the fading optical afterglow at the position reported by Oksanen et al. (GCN 15786). In our first 10 sec frame, we estimate the magnitude r' = 14.97 +- 0.02 at t_mid = 135 sec since the Swift/BAT trigger time. The magnitude is calibrated against nearby SDSS stars.
GCN Circular #15807
A. Volnova (IKI), E. Klunko (ISTP), M. Eselevich (ISTP), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration:
We observed the afterglow (Oksanen et al., GCN 15786; Oates et al., GCN 15787) of the Swift/INTEGRAL/Fermi GRB 140206A (Lien et al., GCN 15784; Gotz et al., GCN 15785, Kienlin et al., GCN 15796) with AZT-33IK telescope of Sayan observatory (Mondy) starting on Feb. 6 (UT) 14:15. We clearly detect afterglow in each frame of 60 s exposure. A preliminary photometry of the afterglow is following:
```
date        Filter  UT start  Exp,s     t-T0,d    OT     err
2014-02-06   R      14:15:21    120     0.29098   18.73  0.05
2014-02-06   R      14:31:29     60     0.30185   18.59  0.07
2014-02-06   R      15:02:15     60     0.32321   18.61  0.07
2014-02-06   R      18:14:26     60     0.45667   19.01  0.08
2014-02-06   R      18:53:29     60     0.48379   19.29  0.09
```
The photometry is based on reference stars SDSS-DR9, (R mag, transformation by Lupton 2005)
```
N   SDSS_id           R(Lupton)errR
4 J094058.58+664752.4 18.030 0.022
5 J094107.93+664422.0 19.066 0.028
```
GCN Circular #15813
U.Quadri, L.Strabla and R.Girelli report:
We imaged the field of GRB 140206A detected by SWIFT(trigger 585834) with the robotic telescope of (IAU station 565) Bassano Bresciano Observatory, Italy (member of ISSP:Italian Supernovae Search Project)
The observations started 85h 35m after the GRB trigger, with our schmidt telescope D=320/400 mm F/D=3.1.
Weather conditions were good.
We co-added 2 series of 15 exposures of 120 sec each.
We did not found any optical counterpart in the error box of the XRTcandidate. (Lien et. al GCN 15784 , Gotz et. al GCN 15784)
```
Start         End       Vlim
85h 35m     86h 47m     18.5
```
Magnitudes were estimated with the USNOB1.0 cat. and are not corrected for galactic dust extinction.
The images are available at: http://www.osservatoriobassano.org/GRB.asp
The message may be cited.
GCN Circular #15835
V. Toy (UMD), S.B. Cenko (NASA-GSFC), A. Kutyrev (NASA-GSFC), J. Capone (UMD), E. Troja (NASA-GSFC), A. Cucchiara (NASA-GSFC), S. Veilleux (UMD), and S. Gezari (UMD) report on behalf of a larger collaboration:
We observed the field of GRB140206A (Swift trigger 585834, Lien et al., GCN 15784) with the Large Monolithic Imager (LMI) on the recently commissioned 4.3m Discovery Channel Telescope (DCT) at Happy Jack, AZ from 2014/02/13 5:33 to 2014/02/13 6:03 UTC (mean epoch of 6.9 d after the Swift trigger).
A source is clearly detected at the location of the optical afterglow (Oksanen et al, GCN 15786). Using nearby point sources from SDSS for calibration, we measure r' = 21.69 +/- 0.07 (AB). This value is not corrected for Galactic extinction in the direction of the GRB.
We thank the staff of the Discovery Channel Telescope for assistance with these observations.
GCN Report 466.1
GCN_Report 466.1 has been posted: http://gcn.gsfc.nasa.gov/reports/report_466_1.pdf by A.Y. Lien at NASA/GSFC/ORAU titled: "Swift Observations of GRB 1340206A"
1408.4121 from 20 Aug 14
D. Gotz et al.: GRB 140206A: the most distant polarized Gamma-Ray Burst
The nature of the prompt gamma-ray emission of Gamma-Ray Bursts (GRBs) is still far from being completely elucidated. The measure of linear polarization is a powerful tool that can be used to put further constraints on the content and magnetization of the GRB relativistic outflows, as well as on the radiation processes at work. To date only a handful of polarization measurements are available for the prompt emission of GRBs. Here we present the analysis of the prompt emission of GRB 140206A, obtained with INTEGRAL/IBIS, Swift/BAT, and Fermi/GBM. Using INTEGRAL/IBIS as a Compton polarimeter we were able to constrain the linear polarization level of the second peak of this GRB as being larger than 28% at 90% c.l. We also present the GRB afterglow optical spectroscopy obtained at the Telescopio Nazionale Galileo (TNG), which allowed us the measure the distance of this GRB, z=2.739. This distance value together with the polarization measure obtained with IBIS, allowed us to derive the deepest and most reliable limit to date (xi <1x10-16) on the possibility of Lorentz Invariance Violation, measured through the vacuum birefringence effect on a cosmological source.

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