Gamma-ray Burst 090519

(All information courtesy of the instrument teams.)

Previous IAU Circulars

none

Results of Observations

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Tue 19 May 09 21:09:03 UT
NOTICE_TYPE:     Fermi-GBM Flight Position
RECORD_NUM:      46
TRIGGER_NUM:     264460127
GRB_RA:          142.233d {+09h 28m 56s} (J2000),
                 142.355d {+09h 29m 25s} (current),
                 141.583d {+09h 26m 20s} (1950)
GRB_DEC:          +3.117d {+03d 06' 60"} (J2000),
                  +3.075d {+03d 04' 31"} (current),
                  +3.336d {+03d 20' 09"} (1950)
GRB_ERROR:       20.57 [deg radius, statistical plus systematic]
GRB_INTEN:       61 [cnts/sec]
DATA_SIGNIF:     7.10 [sigma]
INTEG_TIME:      4.096 [sec]
GRB_DATE:        14970 TJD;   139 DOY;   09/05/19
GRB_TIME:        76125.87 SOD {21:08:45.87} UT
GRB_PHI:          79.00 [deg]
GRB_THETA:        45.00 [deg]
DATA_TIME_SCALE: 4.0960 [sec]
HARD_RATIO:      0.62
LOC_ALGORITHM:   3 (version number of)
MOST_LIKELY:      96%  GRB
2nd_MOST_LIKELY:   3%  Generic Transient
DETECTORS:       0,1,1, 0,0,0, 0,0,0, 1,0,0, 0,0,
SUN_POSTN:        56.79d {+03h 47m 09s}  +19.94d {+19d 56' 09"}
SUN_DIST:         84.79 [deg]   Sun_angle= -5.7 [hr] (East of Sun)
MOON_POSTN:      357.01d {+23h 48m 02s}   +3.32d {+03d 19' 03"}
MOON_DIST:       144.78 [deg]
MOON_ILLUM:      25 [%]
GAL_COORDS:      230.23, 36.05 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      143.56,-11.15 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        Fermi-GBM Flight-calculated Coordinates.  
COMMENTS:        This trigger occurred at longitude,latitude = 355.35,6.05 [deg].

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Tue 19 May 09 21:09:39 UT
NOTICE_TYPE:     Fermi-GBM Ground Position
RECORD_NUM:      56
TRIGGER_NUM:     264460127
GRB_RA:          139.740d {+09h 18m 58s} (J2000),
                 139.859d {+09h 19m 26s} (current),
                 139.103d {+09h 16m 25s} (1950)
GRB_DEC:          -1.210d {-01d 12' 35"} (J2000),
                  -1.250d {-01d 14' 59"} (current),
                  -0.999d {-00d 59' 54"} (1950)
GRB_ERROR:       10.97 [deg radius, statistical only]
DATA_SIGNIF:     7.60 [sigma]
DATA_INTERVAL:   4.096 [sec]
GRB_DATE:        14970 TJD;   139 DOY;   09/05/19
GRB_TIME:        76125.87 SOD {21:08:45.87} UT
GRB_PHI:          79.00 [deg]
GRB_THETA:        50.00 [deg]
E_RANGE:         44.032 - 279.965 [keV]
LOC_ALGORITHM:   413 (Gnd S/W Version number)
SUN_POSTN:        56.79d {+03h 47m 09s}  +19.94d {+19d 56' 09"}
SUN_DIST:         83.92 [deg]   Sun_angle= -5.5 [hr] (East of Sun)
MOON_POSTN:      357.01d {+23h 48m 03s}   +3.32d {+03d 19' 11"}
MOON_DIST:       142.82 [deg]
MOON_ILLUM:      25 [%]
GAL_COORDS:      233.02, 31.63 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      142.55,-16.04 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        Fermi-GBM Ground-calculated Coordinates.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.

GCN/BACODINE POSITION NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 19 May 09 21:10:06 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     352648,   Seg_Num: 0
GRB_RA:          142.293d {+09h 29m 10s} (J2000),
                 142.413d {+09h 29m 39s} (current),
                 141.651d {+09h 26m 36s} (1950)
GRB_DEC:          +0.183d {+00d 10' 58"} (J2000),
                  +0.142d {+00d 08' 30"} (current),
                  +0.402d {+00d 24' 08"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       44607 [cnts]    Image_Peak=647 [image_cnts]
TRIGGER_DUR:     12.160 [sec] 
TRIGGER_INDEX:   478     E_range: 25-100 keV
BKG_INTEN:       213586 [cnts]
BKG_TIME:        76043.24 SOD {21:07:23.24} UT
BKG_DUR:         64 [sec]
GRB_DATE:        14970 TJD;   139 DOY;   09/05/19
GRB_TIME:        76136.42 SOD {21:08:56.42} UT
GRB_PHI:          75.13 [deg]
GRB_THETA:        22.38 [deg]
SOLN_STATUS:     0x20000003
RATE_SIGNIF:     13.67 [sigma]
IMAGE_SIGNIF:    8.61 [sigma]
MERIT_PARAMS:     +1  +0  +0  +4  +2  -1  +0  +0  -7  +0 
SUN_POSTN:        56.79d {+03h 47m 09s}  +19.94d {+19d 56' 09"}
SUN_DIST:         85.84 [deg]   Sun_angle= -5.7 [hr] (East of Sun)
MOON_POSTN:      357.02d {+23h 48m 04s}   +3.32d {+03d 19' 18"}
MOON_DIST:       145.24 [deg]
MOON_ILLUM:      25 [%]
GAL_COORDS:      233.30, 34.52 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      144.59,-13.91 [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 = 248.07,15.60 [deg].  
COMMENTS:           
COMMENTS:        NOTE: This BAT event is temporally(11.0<100sec) coincident with the FERMI_GBM event (trignum=264460127).

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 19 May 09 21:11:51 UT
NOTICE_TYPE:     Swift-XRT Processed Image
TRIGGER_NUM:     352648,   Seg_Num: 0
GRB_RA:          142.2799d {+09h 29m 07.1s} (J2000),
                 142.4002d {+09h 29m 36.0s} (current),
                 141.6385d {+09h 26m 33.2s} (1950)
GRB_DEC:          +0.1752d {+00d 10' 30.7"} (J2000),
                  +0.1339d {+00d 08' 01.8"} (current),
                  +0.3945d {+00d 23' 40.0"} (1950)
GRB_ERROR:       6.1 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       20 [cnts]
IMG_START_DATE:  14970 TJD;   139 DOY;   09/05/19
IMG_START_TIME:  76251.34 SOD {21:10:51.34} UT,   114.9 [sec] since BAT Trigger Time
CENTROID_X:      319.98,  raw= 320  [pixels]
CENTROID_Y:      314.77,  raw= 315  [pixels]
ROLL:            289.93 [deg]
GAIN:            1
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   39.54
GRB_POS_XRT_Z:   41.68
IMAGE_URL:       sw00352648000msxps_rw.img
SUN_POSTN:        56.79d {+03h 47m 09s}  +19.94d {+19d 56' 10"}
SUN_DIST:         85.83 [deg]   Sun_angle= -5.7 [hr] (East of Sun)
MOON_POSTN:      357.03d {+23h 48m 07s}   +3.33d {+03d 19' 43"}
MOON_DIST:       145.22 [deg]
MOON_ILLUM:      25 [%]
GAL_COORDS:      233.30, 34.51 [deg] galactic lon,lat of the burst
ECL_COORDS:      144.58,-13.92 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Processed Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 19 May 09 21:11:35 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     352648,   Seg_Num: 0
GRB_RA:          142.2799d {+09h 29m 07.17s} (J2000),
                 142.4002d {+09h 29m 36.04s} (current),
                 141.6385d {+09h 26m 33.24s} (1950)
GRB_DEC:          +0.1752d {+00d 10' 30.7"} (J2000),
                  +0.1339d {+00d 08' 01.8"} (current),
                  +0.3945d {+00d 23' 40.0"} (1950)
GRB_ERROR:       6.2 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       5.77e-10 [erg/cm2/sec]
GRB_SIGNIF:      4.47 [sigma]
IMG_START_DATE:  14970 TJD;   139 DOY;   09/05/19
IMG_START_TIME:  76251.34 SOD {21:10:51.34} UT,   114.9 [sec] since BAT Trigger Time
TAM[0-3]:        327.62 237.24 261.51 243.39
AMPLIFIER:       2
WAVEFORM:        134
SUN_POSTN:        56.79d {+03h 47m 09s}  +19.94d {+19d 56' 10"}
SUN_DIST:         85.83 [deg]   Sun_angle= -5.7 [hr] (East of Sun)
MOON_POSTN:      357.03d {+23h 48m 07s}   +3.33d {+03d 19' 39"}
MOON_DIST:       145.22 [deg]
MOON_ILLUM:      25 [%]
GAL_COORDS:      233.30, 34.51 [deg] galactic lon,lat of the burst
ECL_COORDS:      144.58,-13.92 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        The XRT position is 0.89 arcmin from the BAT position.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 19 May 09 21:11:45 UT
NOTICE_TYPE:     Swift-XRT Image
TRIGGER_NUM:     352648,   Seg_Num: 0
GRB_RA:          142.2799d {+09h 29m 07.1s} (J2000),
                 142.4002d {+09h 29m 36.0s} (current),
                 141.6385d {+09h 26m 33.2s} (1950)
GRB_DEC:          +0.1752d {+00d 10' 30.7"} (J2000),
                  +0.1339d {+00d 08' 01.8"} (current),
                  +0.3945d {+00d 23' 40.0"} (1950)
GRB_ERROR:       6.1 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       20 [cnts]
IMG_START_DATE:  14970 TJD;   139 DOY;   09/05/19
IMG_START_TIME:  76251.34 SOD {21:10:51.34} UT,   114.9 [sec] since BAT Trigger Time
CENTROID_X:      319.98,  raw= 320  [pixels]
CENTROID_Y:      314.77,  raw= 315  [pixels]
ROLL:            289.93 [deg]
GAIN:            1
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   39.54
GRB_POS_XRT_Z:   41.68
IMAGE_URL:       sw00352648000msxps_rw.img
SUN_POSTN:        56.79d {+03h 47m 09s}  +19.94d {+19d 56' 10"}
SUN_DIST:         85.83 [deg]   Sun_angle= -5.7 [hr] (East of Sun)
MOON_POSTN:      357.03d {+23h 48m 07s}   +3.33d {+03d 19' 41"}
MOON_DIST:       145.22 [deg]
MOON_ILLUM:      25 [%]
GAL_COORDS:      233.30, 34.51 [deg] galactic lon,lat of the burst
ECL_COORDS:      144.58,-13.92 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 19 May 09 21:13:00 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     352648,   Seg_Num: 0
GRB_RA:          142.293d {+09h 29m 10s} (J2000),
                 142.413d {+09h 29m 39s} (current),
                 141.651d {+09h 26m 36s} (1950)
GRB_DEC:          +0.183d {+00d 10' 58"} (J2000),
                  +0.142d {+00d 08' 30"} (current),
                  +0.402d {+00d 24' 08"} (1950)
GRB_DATE:        14970 TJD;   139 DOY;   09/05/19
GRB_TIME:        76136.42 SOD {21:08:56.42} UT
TRIGGER_INDEX:   478
GRB_PHI:          75.13 [deg]
GRB_THETA:        22.38 [deg]
DELTA_TIME:      -38.00 [sec]
TRIGGER_DUR:     12.160 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     13.67 [sigma]
IMAGE_SIGNIF:    8.61 [sigma]
LC_URL:          sw00352648000msb.lc
SUN_POSTN:        56.79d {+03h 47m 10s}  +19.94d {+19d 56' 11"}
SUN_DIST:         85.84 [deg]   Sun_angle= -5.7 [hr] (East of Sun)
MOON_POSTN:      357.04d {+23h 48m 09s}   +3.33d {+03d 19' 59"}
MOON_DIST:       145.22 [deg]
MOON_ILLUM:      25 [%]
GAL_COORDS:      233.30, 34.52 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      144.59,-13.91 [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 = 248.07,15.60 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 19 May 09 21:14:48 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     352648,   Seg_Num: 0
POINT_RA:        142.273d {+09h 29m 05s} (J2000)
POINT_DEC:        +0.190d {+00d 11' 23"} (J2000)
POINT_ROLL:      289.927d
IMG_START_DATE:  14970 TJD;   139 DOY;   09/05/19
IMG_START_TIME:  76259.56 SOD {21:10:59.56} UT,   123.1 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        5.159
N_STARS:         29
X_OFFSET:        344 [pixels]
Y_OFFSET:        640 [pixels]
X_MAX:           1303 [pixels]
Y_MAX:           1599 [pixels]
DET_THRESH:      19
PHOTO_THRESH:    11
SL_URL:          sw00352648000msufc0123.fits
SUN_POSTN:        56.79d {+03h 47m 10s}  +19.94d {+19d 56' 12"}
SUN_DIST:         85.82 [deg]   Sun_angle= -5.7 [hr] (East of Sun)
MOON_POSTN:      357.05d {+23h 48m 13s}   +3.34d {+03d 20' 25"}
MOON_DIST:       145.18 [deg]
MOON_ILLUM:      25 [%]
GAL_COORDS:      233.28, 34.51 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      144.57,-13.91 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 19 May 09 21:15:28 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     352648,   Seg_Num: 0
POINT_RA:        142.273d {+09h 29m 05s} (J2000)
POINT_DEC:        +0.190d {+00d 11' 23"} (J2000)
POINT_ROLL:      289.927d
IMG_START_DATE:  14970 TJD;   139 DOY;   09/05/19
IMG_START_TIME:  76259.56 SOD {21:10:59.56} UT,   123.1 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        5.159
N_STARS:         29
X_OFFSET:        344 [pixels]
Y_OFFSET:        640 [pixels]
X_MAX:           1303 [pixels]
Y_MAX:           1599 [pixels]
DET_THRESH:      19
PHOTO_THRESH:    11
SL_URL:          sw00352648000msufc0123.fits
SUN_POSTN:        56.79d {+03h 47m 10s}  +19.94d {+19d 56' 12"}
SUN_DIST:         85.81 [deg]   Sun_angle= -5.7 [hr] (East of Sun)
MOON_POSTN:      357.06d {+23h 48m 14s}   +3.34d {+03d 20' 35"}
MOON_DIST:       145.18 [deg]
MOON_ILLUM:      25 [%]
GAL_COORDS:      233.28, 34.51 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      144.57,-13.91 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Source List.  
COMMENTS:        All 4 attachments are included.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 19 May 09 21:16:52 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     352648,   Seg_Num: 0
POINT_RA:        142.273d {+09h 29m 05s} (J2000)
POINT_DEC:        +0.190d {+00d 11' 23"} (J2000)
ROLL:            289.927d
IMG_START_DATE:  14970 TJD;   139 DOY;   09/05/19
IMG_START_TIME:  76259.56 SOD {21:10:59.56} UT,   123.1 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     264460264
X_OFFSET:        676 [pixels]
Y_OFFSET:        855 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       836
Y_GRB_POS:       1015
BINNING_INDEX:   1
IM_URL:          sw00352648000msuni0128.fits
SUN_POSTN:        56.79d {+03h 47m 10s}  +19.94d {+19d 56' 13"}
SUN_DIST:         85.81 [deg]   Sun_angle= -5.7 [hr] (East of Sun)
MOON_POSTN:      357.07d {+23h 48m 17s}   +3.35d {+03d 20' 55"}
MOON_DIST:       145.17 [deg]
MOON_ILLUM:      25 [%]
GAL_COORDS:      233.28, 34.51 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      144.57,-13.91 [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:     Tue 19 May 09 21:17:19 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     352648,   Seg_Num: 0
POINT_RA:        142.273d {+09h 29m 05s} (J2000)
POINT_DEC:        +0.190d {+00d 11' 23"} (J2000)
ROLL:            289.927d
IMG_START_DATE:  14970 TJD;   139 DOY;   09/05/19
IMG_START_TIME:  76259.56 SOD {21:10:59.56} UT,   123.1 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     264460264
X_OFFSET:        676 [pixels]
Y_OFFSET:        855 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       836
Y_GRB_POS:       1015
BINNING_INDEX:   1
IM_URL:          sw00352648000msuni0128.fits
SUN_POSTN:        56.79d {+03h 47m 10s}  +19.94d {+19d 56' 13"}
SUN_DIST:         85.81 [deg]   Sun_angle= -5.7 [hr] (East of Sun)
MOON_POSTN:      357.07d {+23h 48m 18s}   +3.35d {+03d 21' 02"}
MOON_DIST:       145.16 [deg]
MOON_ILLUM:      25 [%]
GAL_COORDS:      233.28, 34.51 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      144.57,-13.91 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Image.  
COMMENTS:        The GRB Position came from the XRT Position Command.  
COMMENTS:        The image has 2x2 binning (compression).  
COMMENTS:        All 4 attachments are included.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 19 May 09 21:17:04 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     352648,   Seg_Num: 0
GRB_RA:          142.2790d {+09h 29m 06.95s} (J2000),
                 142.3993d {+09h 29m 35.82s} (current),
                 141.6376d {+09h 26m 33.02s} (1950)
GRB_DEC:          +0.1792d {+00d 10' 45.1"} (J2000),
                  +0.1379d {+00d 08' 16.2"} (current),
                  +0.3985d {+00d 23' 54.4"} (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:  14970 TJD;   139 DOY;   09/05/19
IMG_START_TIME:  76303.00 SOD {21:11:43.00} UT,   166.6 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:        56.79d {+03h 47m 10s}  +19.94d {+19d 56' 13"}
SUN_DIST:         85.82 [deg]   Sun_angle= -5.7 [hr] (East of Sun)
MOON_POSTN:      357.07d {+23h 48m 17s}   +3.35d {+03d 20' 58"}
MOON_DIST:       145.17 [deg]
MOON_ILLUM:      25 [%]
GAL_COORDS:      233.30, 34.51 [deg] galactic lon,lat of the burst
ECL_COORDS:      144.58,-13.92 [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.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 19 May 09 21:19:24 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     352648,   Seg_Num: 0
POINT_RA:        142.271d {+09h 29m 05s} (J2000)
POINT_DEC:        +0.190d {+00d 11' 22"} (J2000)
POINT_ROLL:      289.926d
IMG_START_DATE:  14970 TJD;   139 DOY;   09/05/19
IMG_START_TIME:  76417.55 SOD {21:13:37.55} UT,   281.1 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        1.200
N_STARS:         39
X_OFFSET:        356 [pixels]
Y_OFFSET:        535 [pixels]
X_MAX:           1315 [pixels]
Y_MAX:           1494 [pixels]
DET_THRESH:      9
PHOTO_THRESH:    4
SL_URL:          sw00352648000msufc0281.fits
SUN_POSTN:        56.79d {+03h 47m 11s}  +19.94d {+19d 56' 14"}
SUN_DIST:         85.81 [deg]   Sun_angle= -5.7 [hr] (East of Sun)
MOON_POSTN:      357.09d {+23h 48m 22s}   +3.36d {+03d 21' 32"}
MOON_DIST:       145.14 [deg]
MOON_ILLUM:      25 [%]
GAL_COORDS:      233.28, 34.51 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      144.57,-13.91 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 19 May 09 21:21:16 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     352648,   Seg_Num: 0
POINT_RA:        142.271d {+09h 29m 05s} (J2000)
POINT_DEC:        +0.190d {+00d 11' 22"} (J2000)
ROLL:            289.926d
IMG_START_DATE:  14970 TJD;   139 DOY;   09/05/19
IMG_START_TIME:  76417.55 SOD {21:13:37.55} UT,   281.1 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     264460422
X_OFFSET:        676 [pixels]
Y_OFFSET:        855 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       836
Y_GRB_POS:       1015
BINNING_INDEX:   1
IM_URL:          sw00352648000msuni0286.fits
SUN_POSTN:        56.80d {+03h 47m 11s}  +19.94d {+19d 56' 15"}
SUN_DIST:         85.81 [deg]   Sun_angle= -5.7 [hr] (East of Sun)
MOON_POSTN:      357.11d {+23h 48m 25s}   +3.37d {+03d 21' 59"}
MOON_DIST:       145.13 [deg]
MOON_ILLUM:      25 [%]
GAL_COORDS:      233.28, 34.51 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      144.57,-13.91 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Image.  
COMMENTS:        The GRB Position came from the XRT Position Command.  
COMMENTS:        The image has 2x2 binning (compression).  
COMMENTS:        All 4 attachments are included.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 19 May 09 21:20:47 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     352648,   Seg_Num: 0
POINT_RA:        142.271d {+09h 29m 05s} (J2000)
POINT_DEC:        +0.190d {+00d 11' 22"} (J2000)
ROLL:            289.926d
IMG_START_DATE:  14970 TJD;   139 DOY;   09/05/19
IMG_START_TIME:  76417.55 SOD {21:13:37.55} UT,   281.1 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     264460422
X_OFFSET:        676 [pixels]
Y_OFFSET:        855 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       836
Y_GRB_POS:       1015
BINNING_INDEX:   1
IM_URL:          sw00352648000msuni0286.fits
SUN_POSTN:        56.80d {+03h 47m 11s}  +19.94d {+19d 56' 15"}
SUN_DIST:         85.81 [deg]   Sun_angle= -5.7 [hr] (East of Sun)
MOON_POSTN:      357.10d {+23h 48m 25s}   +3.36d {+03d 21' 52"}
MOON_DIST:       145.13 [deg]
MOON_ILLUM:      25 [%]
GAL_COORDS:      233.28, 34.51 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      144.57,-13.91 [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:     Tue 19 May 09 21:20:00 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     352648,   Seg_Num: 0
POINT_RA:        142.271d {+09h 29m 05s} (J2000)
POINT_DEC:        +0.190d {+00d 11' 22"} (J2000)
POINT_ROLL:      289.926d
IMG_START_DATE:  14970 TJD;   139 DOY;   09/05/19
IMG_START_TIME:  76417.55 SOD {21:13:37.55} UT,   281.1 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        1.200
N_STARS:         39
X_OFFSET:        356 [pixels]
Y_OFFSET:        535 [pixels]
X_MAX:           1315 [pixels]
Y_MAX:           1494 [pixels]
DET_THRESH:      9
PHOTO_THRESH:    4
SL_URL:          sw00352648000msufc0281.fits
SUN_POSTN:        56.79d {+03h 47m 11s}  +19.94d {+19d 56' 15"}
SUN_DIST:         85.81 [deg]   Sun_angle= -5.7 [hr] (East of Sun)
MOON_POSTN:      357.10d {+23h 48m 23s}   +3.36d {+03d 21' 40"}
MOON_DIST:       145.14 [deg]
MOON_ILLUM:      25 [%]
GAL_COORDS:      233.28, 34.51 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      144.57,-13.91 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Source List.  
COMMENTS:        All 4 attachments are included.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 19 May 09 21:26:39 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     352648,   Seg_Num: 0
POINT_RA:        142.271d {+09h 29m 05s} (J2000)
POINT_DEC:        +0.190d {+00d 11' 22"} (J2000)
POINT_ROLL:      289.927d
IMG_START_DATE:  14970 TJD;   139 DOY;   09/05/19
IMG_START_TIME:  76998.48 SOD {21:23:18.48} UT,   862.1 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        3.077
N_STARS:         117
X_OFFSET:        116 [pixels]
Y_OFFSET:        295 [pixels]
X_MAX:           1555 [pixels]
Y_MAX:           1734 [pixels]
DET_THRESH:      14
PHOTO_THRESH:    8
SL_URL:          sw00352648000msufc0862.fits
SUN_POSTN:        56.80d {+03h 47m 12s}  +19.94d {+19d 56' 18"}
SUN_DIST:         85.81 [deg]   Sun_angle= -5.7 [hr] (East of Sun)
MOON_POSTN:      357.15d {+23h 48m 36s}   +3.39d {+03d 23' 16"}
MOON_DIST:       145.08 [deg]
MOON_ILLUM:      25 [%]
GAL_COORDS:      233.28, 34.51 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      144.57,-13.91 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 19 May 09 21:28:15 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     352648,   Seg_Num: 0
POINT_RA:        142.271d {+09h 29m 05s} (J2000)
POINT_DEC:        +0.190d {+00d 11' 22"} (J2000)
ROLL:            289.927d
IMG_START_DATE:  14970 TJD;   139 DOY;   09/05/19
IMG_START_TIME:  76998.48 SOD {21:23:18.48} UT,   862.1 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     264461003
X_OFFSET:        675 [pixels]
Y_OFFSET:        854 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       835
Y_GRB_POS:       1014
BINNING_INDEX:   1
IM_URL:          sw00352648000msuni0867.fits
SUN_POSTN:        56.80d {+03h 47m 12s}  +19.94d {+19d 56' 19"}
SUN_DIST:         85.80 [deg]   Sun_angle= -5.7 [hr] (East of Sun)
MOON_POSTN:      357.16d {+23h 48m 39s}   +3.39d {+03d 23' 39"}
MOON_DIST:       145.07 [deg]
MOON_ILLUM:      25 [%]
GAL_COORDS:      233.28, 34.51 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      144.57,-13.91 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Image.  
COMMENTS:        The GRB Position came from the Window Position in the Mode Command.  
COMMENTS:        The image has 2x2 binning (compression).  
COMMENTS:        All 4 attachments are included.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 19 May 09 21:27:17 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     352648,   Seg_Num: 0
POINT_RA:        142.271d {+09h 29m 05s} (J2000)
POINT_DEC:        +0.190d {+00d 11' 22"} (J2000)
POINT_ROLL:      289.927d
IMG_START_DATE:  14970 TJD;   139 DOY;   09/05/19
IMG_START_TIME:  76998.48 SOD {21:23:18.48} UT,   862.1 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        3.077
N_STARS:         117
X_OFFSET:        116 [pixels]
Y_OFFSET:        295 [pixels]
X_MAX:           1555 [pixels]
Y_MAX:           1734 [pixels]
DET_THRESH:      14
PHOTO_THRESH:    8
SL_URL:          sw00352648000msufc0862.fits
SUN_POSTN:        56.80d {+03h 47m 12s}  +19.94d {+19d 56' 18"}
SUN_DIST:         85.81 [deg]   Sun_angle= -5.7 [hr] (East of Sun)
MOON_POSTN:      357.16d {+23h 48m 37s}   +3.39d {+03d 23' 25"}
MOON_DIST:       145.08 [deg]
MOON_ILLUM:      25 [%]
GAL_COORDS:      233.28, 34.51 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      144.57,-13.91 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Source List.  
COMMENTS:        All 4 attachments are included.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 19 May 09 21:28:00 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     352648,   Seg_Num: 0
POINT_RA:        142.271d {+09h 29m 05s} (J2000)
POINT_DEC:        +0.190d {+00d 11' 22"} (J2000)
ROLL:            289.927d
IMG_START_DATE:  14970 TJD;   139 DOY;   09/05/19
IMG_START_TIME:  76998.48 SOD {21:23:18.48} UT,   862.1 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     264461003
X_OFFSET:        675 [pixels]
Y_OFFSET:        854 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       835
Y_GRB_POS:       1014
BINNING_INDEX:   1
IM_URL:          sw00352648000msuni0867.fits
SUN_POSTN:        56.80d {+03h 47m 12s}  +19.94d {+19d 56' 19"}
SUN_DIST:         85.81 [deg]   Sun_angle= -5.7 [hr] (East of Sun)
MOON_POSTN:      357.16d {+23h 48m 39s}   +3.39d {+03d 23' 36"}
MOON_DIST:       145.07 [deg]
MOON_ILLUM:      25 [%]
GAL_COORDS:      233.28, 34.51 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      144.57,-13.91 [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 #9400
M. Perri (ASDC), S. D. Barthelmy (GSFC), D. N. Burrows (PSU), C. Gronwall (PSU), S. T. Holland (CRESST/USRA/GSFC), J. A. Kennea (PSU), F. E. Marshall (NASA/GSFC), P. T. O'Brien (U Leicester), C. Pagani (PSU), D. M. Palmer (LANL), A. Rowlinson (U Leicester), M. H. Siegel (PSU), M. Stamatikos (NASA/ORAU) and T. N. Ukwatta (GSFC/GWU) report on behalf of the Swift Team:
At 21:08:56 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 090519 (trigger=352648). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 142.293, +0.183 which is
```
   RA(J2000)  =  09h 29m 10s
   Dec(J2000) = +00d 10' 58"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve shows several overlapping peaks with a duration of about 40 sec. The peak count rate was ~1300 counts/sec (15-350 keV), at ~3 sec after the trigger.
The XRT began observing the field at 21:10:51.3 UT, 114.9 seconds after the BAT trigger. Using promptly downlinked data we find a bright, uncatalogued X-ray source located at RA, Dec 142.27902, 0.17925 which is equivalent to:
```
   RA(J2000)  = 09h 29m 6.96s
   Dec(J2000) = +00d 10' 45.3"
```
with an uncertainty of 3.7 arcseconds (radius, 90% containment). This location is 52 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.
A power-law fit to a spectrum formed from promptly downlinked event data gives a column density in excess of the Galactic value (2.96e+20 cm^-2, Kalberla et al. 2005), with an excess column of 1.9 (+2.14/-1.86) x 10^21 cm^-2 (90% confidence).
The initial flux in the 2.5 s image was 5.77e-10 erg cm^-2 s^-1 (0.2-10 keV).
UVOT took a finding chart exposure of 150 seconds with the White filter starting 123 seconds after the BAT trigger. No credible afterglow candidate has been found in the initial data products. The 2.7'x2.7' sub-image covers 100% of the XRT error circle. The typical 3-sigma upper limit has been about 19.6 mag. The 8'x8' region for the list of sources generated on-board covers 100% of the XRT error circle. The list of sources is typically complete to about 18 mag. No correction has been made for the expected extinction corresponding to E(B-V) of 0.04.
Burst Advocate for this burst is M. Perri (perri AT asdc.asi.it). 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 Circular #9401
Klotz, A. (CESR-OMP), Gendre, B. (LAM-OAMP), Boer M. (OHP-OAMP), Atteia J.L. (LATT-OMP) report:
We imaged the field of GRB 090519 detected by SWIFT (trigger 352648) with the TAROT robotic telescope (D=25cm) located at the Calern observatory, France.
The observations started 76.0s after the GRB trigger (6.6s after the notice). The elevation of the field decreased from 21 degrees above horizon and weather conditions were good.
The date of trigger : t0 = 2009-05-19T21:08:56.5
The first image is trailed with a duration of 60.0s (see the description in Klotz et al., 2006, A&A 451, L39). We do not detect any OT at the XRT position mentionned by Perri et al. 2009 (GCNC 9400) with a limiting magnitude of: t0+76.0s to t0+136.0s : R > 16.8
The second image is 30.0s exposure in tracking mode: t0+142.8s to t0+172.8s : R > 17.5
We co-added a series of exposures: t0+142.8s to t0+319.6s : R > 18.5
Magnitudes were estimated with the nearby USNO-B1 stars and are not corrected for galactic dust extinction.
N.B. Galactic coordinates are lon=233.3028 lat=+34.5244 and the galactic extinction in R band is 0.1 magnitude estimated from D. Schlegel et al. 1998ApJ...500..525S.
This message may be cited.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 19 May 09 21:14:48 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     352648,   Seg_Num: 0
POINT_RA:        142.273d {+09h 29m 05s} (J2000)
POINT_DEC:        +0.190d {+00d 11' 23"} (J2000)
POINT_ROLL:      289.927d
IMG_START_DATE:  14970 TJD;   139 DOY;   09/05/19
IMG_START_TIME:  76259.56 SOD {21:10:59.56} UT,   123.1 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        5.159
N_STARS:         29
X_OFFSET:        344 [pixels]
Y_OFFSET:        640 [pixels]
X_MAX:           1303 [pixels]
Y_MAX:           1599 [pixels]
DET_THRESH:      19
PHOTO_THRESH:    11
SL_URL:          sw00352648000msufc0123.fits
SUN_POSTN:        56.79d {+03h 47m 10s}  +19.94d {+19d 56' 12"}
SUN_DIST:         85.82 [deg]   Sun_angle= -5.7 [hr] (East of Sun)
MOON_POSTN:      357.05d {+23h 48m 13s}   +3.34d {+03d 20' 25"}
MOON_DIST:       145.18 [deg]
MOON_ILLUM:      25 [%]
GAL_COORDS:      233.28, 34.51 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      144.57,-13.91 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 19 May 09 21:19:24 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     352648,   Seg_Num: 0
POINT_RA:        142.271d {+09h 29m 05s} (J2000)
POINT_DEC:        +0.190d {+00d 11' 22"} (J2000)
POINT_ROLL:      289.926d
IMG_START_DATE:  14970 TJD;   139 DOY;   09/05/19
IMG_START_TIME:  76417.55 SOD {21:13:37.55} UT,   281.1 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        1.200
N_STARS:         39
X_OFFSET:        356 [pixels]
Y_OFFSET:        535 [pixels]
X_MAX:           1315 [pixels]
Y_MAX:           1494 [pixels]
DET_THRESH:      9
PHOTO_THRESH:    4
SL_URL:          sw00352648000msufc0281.fits
SUN_POSTN:        56.79d {+03h 47m 11s}  +19.94d {+19d 56' 14"}
SUN_DIST:         85.81 [deg]   Sun_angle= -5.7 [hr] (East of Sun)
MOON_POSTN:      357.09d {+23h 48m 22s}   +3.36d {+03d 21' 32"}
MOON_DIST:       145.14 [deg]
MOON_ILLUM:      25 [%]
GAL_COORDS:      233.28, 34.51 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      144.57,-13.91 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 19 May 09 21:26:39 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     352648,   Seg_Num: 0
POINT_RA:        142.271d {+09h 29m 05s} (J2000)
POINT_DEC:        +0.190d {+00d 11' 22"} (J2000)
POINT_ROLL:      289.927d
IMG_START_DATE:  14970 TJD;   139 DOY;   09/05/19
IMG_START_TIME:  76998.48 SOD {21:23:18.48} UT,   862.1 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        3.077
N_STARS:         117
X_OFFSET:        116 [pixels]
Y_OFFSET:        295 [pixels]
X_MAX:           1555 [pixels]
Y_MAX:           1734 [pixels]
DET_THRESH:      14
PHOTO_THRESH:    8
SL_URL:          sw00352648000msufc0862.fits
SUN_POSTN:        56.80d {+03h 47m 12s}  +19.94d {+19d 56' 18"}
SUN_DIST:         85.81 [deg]   Sun_angle= -5.7 [hr] (East of Sun)
MOON_POSTN:      357.15d {+23h 48m 36s}   +3.39d {+03d 23' 16"}
MOON_DIST:       145.08 [deg]
MOON_ILLUM:      25 [%]
GAL_COORDS:      233.28, 34.51 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      144.57,-13.91 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN Circular #9402
Klotz, A. (CESR-OMP), Kugel, F. (Obs. Chanteperdrix) report:
We imaged the field of GRB 090519 detected by SWIFT (trigger 352648) with the FARO robotic telescope (D=20cm) located at the Chante Perdrix Observatory, Banon, France. FARO stands for Francois & Alain Robotic Observatory: http://chanteperdrix.dyndns.org
The observations started 122.4s after the GRB trigger (53.0s after the notice). The elevation of the field decreased from 22 degrees above horizon and weather conditions were good.
The date of trigger : t0 = 2009-05-19T21:08:56.5
The first image is 60.0s exposure in tracking mode. We do not detect any OT at the XRT position mentionned by Perri et al. 2009 (GCNC 9400) with a limiting magnitude of: t0+122.4s to t0+182.4s : R > 15.7
Magnitudes were estimated with the nearby USNO-B1 stars and are not corrected for galactic dust extinction.
This message may be cited.
GCN Circular #9403
C.C. Thoene (INAF/Brera), D. Malesani (DARK/NBI), A.J. Levan (Univ. Warwick), P. Jakobsson (Univ. Iceland), J. Hjorth (DARK/NBI), N.R. Tanvir (Univ. Leicerster), report on behalf of a larger collaboration
We observed the field of GRB 090519 (Perri et al., GCN 9400) with the NOT equipped with ALFOSC.
At the edge of the XRT error circle, we detect a fading source at coordinates (J2000):
```
RA = 09:29:07.0
Dec = +00:10:49.1
```
with an error of ~0.5". The source faded by ~0.3 +- 0.10 mag between 19.8 and 44.4 min after the GRB, suggesting that this is indeed the afterglow of GRB 090519. A (fainter) object is seen at the position of the candidate in the SDSS, which may be a bright host galaxy. On May 19.897 UT, the source had R ~ 21.6.
GCN Circular #9404
Martin Jelinek (IAA Granada) and Petr Kubanek (IPL Valencia) on behalf of the BOOTES team.
report
We observed the errorbox of the GRB 090519 (Perri et al, GCN9400) with the 30cm robotic telescope BOOTES-1B in Spain. The observation started 99s after the GRB trigger. In our unfiltered images we do not detect any new object within the BAT or XRT errorbox with the following limits:
```
Tstart-Tgrb  exposure  limit
99s           3.5s     15.1
108s          30s      16.5
108s         23x30s    17.6
```
This message may be cited
GCN Circular #9405
M.R. Goad, J.P. Osborne, A.P. Beardmore and P.A. Evans (U. Leicester) report on behalf of the Swift-XRT team.
Using 2178 s of XRT Photon Counting mode data and 1 UVOT images for GRB 090519, 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 = 142.27878, +0.18020 which is equivalent to:
```
RA (J2000): 09h 29m 6.91s
Dec (J2000): +00d 10' 48.7"
```
with an uncertainty of 1.8 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, arXiv:0812.3662).
This circular was automatically generated, and is an official product of the Swift-XRT team.
GCN Circular #9406
H. A. Krimm (GSFC/USRA), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC), E. E. Fenimore (LANL), N. Gehrels (GSFC), C. B. Markwardt (GSFC/UMD), D. M. Palmer (LANL), A. M. Parsons (GSFC), M. Perri (ASDC), T. Sakamoto (GSFC/UMBC), G. Sato (ISAS), M. Stamatikos (GSFC/ORAU), J. Tueller (GSFC), T. N. Ukwatta (GWU) (i.e. the Swift-BAT team):
Using the data set from T-119 to T+276 sec from the recent telemetry downlink, we report further analysis of BAT GRB 090519 (trigger #352648) (Perri, et al., GCN Circ. 9400). The BAT ground-calculated position is RA, Dec = 142.317, 0.190 deg which is
```
   RA(J2000)  =  09h 29m 16.2s
   Dec(J2000) = +00d 11' 23.9"
```
with an uncertainty of 2.0 arcmin, (radius, sys+stat, 90% containment). This is 0.8 arcmin from the enhanced XRT afterglow position (Goad et al. GCN Circ #9405). The partial coding was 57%.
The mask-weighted lightcurve shows multiple overlapping peaks starting at about T-17 sec and ending about T+95 sec. T90 (15-350 keV) is 64 +- 10 sec (estimated error including systematics).
The time-averaged spectrum from T-12.4 to T+60.4 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.02 +- 0.20. The fluence in the 15-150 keV band is 1.2 +- 0.1 x 10-06 erg/cm2. The 1-sec peak photon flux measured from T-10 sec in the 15-150 keV band is 0.6 +- 0.2 ph/cm2/sec. 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/352648/BA/
GCN Circular #9407
S. Immler (NASA/CRESST/GSFC) and M. Perri (ASDC) report on behalf of the Swift/UVOT team:
The Swift/UVOT observed the field of GRB 090519 starting 106 s after the BAT trigger (Perri et al., GCN Circ. 9400). No optical afterglow is detected in the initial UVOT exposures at the enhanced position of the X-ray afterglow (Goad et al., GCN Circ. 9405) or the position of the NOT afterglow candidate (Thoene et al. GCN Circ. 9403). Three-sigma upper limits using the UVOT photometric system (Poole et al. 2008, MNRAS, 383, 627) are:
```
Filter          T_start(s)   T_stop(s)      Exp(s)        Mag

white              123         7430          862         >21.5
v                  106         7841          597         >19.8
b                  536         7224          568         >20.6
u                  281         7019          617         >20.4
uvw1               662         8131          469         >20.3
uvm2               637         8046          587         >20.4
uvw2               588         7636          549         >20.6
```
The values quoted above are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.04 in the direction of the burst (Schlegel et al. 1998).
GCN Circular #9408
A. Rossi (Tautenburg), T. Kruehler, J. Greiner and A. Yoldas (all MPE Garching) report on behalf of the GROND team:
We observed the field of GRB 090519 (Swift trigger 352648, M. Perri et al., GCN #9400) simultaneously in g'r'i'z'JHK with GROND mounted at the 2.2m ESO/MPI telescope at La Silla Observatory (Chile). Observations started on 19 May 2009 at 23:44 UT, 2.5 h after the burst, under challenging sky conditions with cirrus.
We detect the afterglow at a position consistent with the enhanced XRT error circle and NOT (Thoene et al., GCN #9403). With an exposure time of 40min in JHK and 49min in griz, preliminary photometry yields the following AB magnitudes:
```
g =25.0 +-0.4
r =23.5 +-0.2
i =23.5 +-0.3
z >23.6
J >21.9
H >20.7
K >19.9
```
calibrated using SDSS and 2MASS field stars. The quoted magnitudes are not corrected for the galactic foreground extinction corresponding to a reddening of E_(B-V)=0.04.
The large g-i color as compared to r-i indicates that the Lyman break may be located in the g' band. Fitting the SED with Hyper-Z results in a preliminary photometric redshift of z = 3.9+0.4-0.7, assuming no intrinsic extinction.
GCN Circular #9409
C. C. Thoene (INAF/OAB), P. Jakobsson, A. De Cia (U. Iceland), A.J. Levan (Univ. Warwick), J.P.U. Fynbo, J. Hjorth, D. Malesani (DARK/NBI), N.R. Tanvir (U. Leicester), D. Fugazza (INAF/OAB), P. D'Avanzo (U. Bicocca & INAF/OAB) report on behalf of a larger collaboration:
Using FORS2 on the ESO Very Large Telescope, we have obtained low-resolution spectra (3 x 30 min) of the optical afterglow of GRB 090519 (Perri et al., GCN 9400; Thoene et al., GCN 9403) with the grism 300V, covering the wavelength range 3500-9200 AA. In the acquisition image the afterglow has a magnitude of R ~ 23.5. The first spectrum was taken approximately 4 hours after the burst.
In a preliminary analysis we detect a break around 4400 AA and strong absorption features around 5000 AA and 5900 AA. We interpret these features as the Lyman limit, Lyman-beta and Lyman-alpha at a redshift of z = 3.85. This is in agreement with the photometric redshift reported by Rossi et al. (GCN 9408).
We thank the Paranal staff for excellent support, in particular Gianni Marconi, Kieran O'Brien and Patricia Guajardo.
GCN Circular #9410
D. Malesani (DARK/NBI), C.C. Thoene (INAF/Brera), P. Jakobsson (Univ. Iceland), A.J. Levan (Univ. Warwick) J.P.U. Fynbo, B. Milvang-Jensen (DARK/NBI), report on behalf of a larger collaboration.
We provide further analysis of the photometric data on the afterglow of GRB 090519 (Perri et al., GCN 9400) taken at the NOT and VLT (Thoene et al., GCN 9403; Levan et al., GCN 9409).
Calibration of the field based on archival VLT zeropoints yields a significantly fainter magnitude for the afterglow with respect to our previous GCN 9403, which was based on USNO stars. The new calibration is consistent with SDSS stars and with the value reported by Rossi et al. (GCN 9408). We find for the afterglow R = 22.8 on 2009 May 19.897 UT (0.33 hr after the GRB).
The decay of the afterglow is well described by a power law with index alpha = 0.44 +- 0.03 between 0.33 and 3.6 hr after the GRB.
GCN Circular #9411
M. Perri, V. D'Elia, G. Stratta (ASDC) report on behalf of the Swift-XRT team:
We have analysed the first 17 ks of XRT data for GRB 090519 (Perri et al., GCN Circ. 9400), from 121 s to 37 ks after the BAT trigger. The first 41 seconds of data are in Windowed Timing (WT) mode and at later times in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Goad et al. (GCN. Circ. 9405).
The light curve can be modelled with a series of power-law decays. The initial decay index is alpha=2.8 (+/-0.2). At around T+580 s the decay flattens to an alpha of 0.6 (+/-0.3) before breaking again at about T+2 ks to a final decay with index alpha=1.4 (+0.3)(-0.2).
A spectrum formed from the PC mode data can be fitted with an absorbed power-law with a photon spectral index of 1.5 (+/-0.2). The best-fitting intrinsic absorption column at z=3.85 (Thoene et al., GCN Circ. 9409) is 1.9(+1.7,-1.6)e22 cm^-2, in excess of the Galactic value of 3.0e20 cm^-2 (Kalberla et al. 2005). The counts-to-observed (-unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 4.9e-11 (5.4e-11) erg cm^-2 count^-1.
If the light curve continues to decay with a power-law decay index of 1.4, the count rate at T+24 hours will be 3e-4 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 1.5e-14 (1.6e-14) erg cm^-2 s^-1.
The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00352648.
This circular is an official product of the Swift-XRT team.
GCN Report 219.1
GCN_Report 219.1 has been posted: http://gcn.gsfc.nasa.gov/reports/report_219_1.pdf by M. Perri at ASDC titled: "Final Swift Results on GRB 090519"

Back to JG's homepage

Jochen Greiner, last update: 15-Jun-2009 [Disclaimer]