Gamma-ray Burst 140323A

(All information courtesy of the instrument teams.)

Previous IAU Circulars

none

Results of Observations

GCN/BACODINE POSITION NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 23 Mar 14 10:26:10 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     592916,   Seg_Num: 0
GRB_RA:          356.888d {+23h 47m 33s} (J2000),
                 357.094d {+23h 48m 22s} (current),
                 356.151d {+23h 44m 36s} (1950)
GRB_DEC:         -79.917d {-79d 55' 00"} (J2000),
                 -79.838d {-79d 50' 14"} (current),
                 -80.195d {-80d 11' 40"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       5659 [cnts]    Image_Peak=141 [image_cnts]
TRIGGER_DUR:     1.024 [sec] 
TRIGGER_INDEX:   155     E_range: 50-350 keV
BKG_INTEN:       26981 [cnts]
BKG_TIME:        37380.20 SOD {10:23:00.20} UT
BKG_DUR:         8 [sec]
GRB_DATE:        16739 TJD;    82 DOY;   14/03/23
GRB_TIME:        37391.91 SOD {10:23:11.91} UT
GRB_PHI:         159.11 [deg]
GRB_THETA:        49.08 [deg]
SOLN_STATUS:     0x20000003
RATE_SIGNIF:     35.25 [sigma]
IMAGE_SIGNIF:    7.58 [sigma]
MERIT_PARAMS:     +1  +0  +0  +0  +3  -2  +0  +0 -15  +0 
SUN_POSTN:         2.49d {+00h 09m 58s}   +1.08d {+01d 04' 44"}
SUN_DIST:         80.96 [deg]   Sun_angle= 0.4 [hr] (West of Sun)
MOON_POSTN:      264.03d {+17h 36m 07s}  -18.94d {-18d 56' 14"}
MOON_DIST:        71.91 [deg]
MOON_ILLUM:      57 [%]
GAL_COORDS:      306.38,-36.78 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      293.59,-64.10 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Coordinates.  
COMMENTS:        This Notice was delayed by more than 60 sec past the end of the trigger integration interval;  
COMMENTS:        probably due to it occurring during a Malindi downlink session.  
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 = 18.76,-20.40 [deg].  
COMMENTS:           
COMMENTS:        NOTE: This BAT event is temporally(0.0<100sec) coincident with the INTEGRAL_SPIACS event (trignum=6559).

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Sun 23 Mar 14 10:23:17 UT
NOTICE_TYPE:     Fermi-GBM Flight Position
RECORD_NUM:      44
TRIGGER_NUM:     417262976
GRB_RA:           35.267d {+02h 21m 04s} (J2000),
                  34.901d {+02h 19m 36s} (current),
                  36.654d {+02h 26m 37s} (1950)
GRB_DEC:         -85.283d {-85d 16' 59"} (J2000),
                 -85.219d {-85d 13' 06"} (current),
                 -85.509d {-85d 30' 31"} (1950)
GRB_ERROR:       14.50 [deg radius, statistical plus systematic]
GRB_INTEN:       86 [cnts/sec]
DATA_SIGNIF:     5.70 [sigma]
INTEG_TIME:      2.048 [sec]
GRB_DATE:        16739 TJD;    82 DOY;   14/03/23
GRB_TIME:        37373.12 SOD {10:22:53.12} UT
GRB_PHI:          72.00 [deg]
GRB_THETA:        25.00 [deg]
DATA_TIME_SCALE: 2.0480 [sec]
HARD_RATIO:      0.80
LOC_ALGORITHM:   3 (version number of)
MOST_LIKELY:      97%  GRB
2nd_MOST_LIKELY:   1%  Generic Transient
DETECTORS:       0,1,0, 1,0,0, 0,0,0, 0,0,0, 0,0,
SUN_POSTN:         2.49d {+00h 09m 57s}   +1.08d {+01d 04' 41"}
SUN_DIST:         87.04 [deg]   Sun_angle= -2.2 [hr] (East of Sun)
MOON_POSTN:      264.00d {+17h 36m 00s}  -18.94d {-18d 56' 15"}
MOON_DIST:        74.23 [deg]
MOON_ILLUM:      57 [%]
GAL_COORDS:      300.83,-31.47 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      280.77,-68.95 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        Fermi-GBM Flight-calculated Coordinates.  
COMMENTS:        This trigger occurred at longitude,latitude = 92.65,-18.63 [deg].

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Sun 23 Mar 14 10:23:30 UT
NOTICE_TYPE:     Fermi-GBM Ground Position
RECORD_NUM:      56
TRIGGER_NUM:     417262976
GRB_RA:          306.640d {+20h 26m 34s} (J2000),
                 307.037d {+20h 28m 09s} (current),
                 305.231d {+20h 20m 55s} (1950)
GRB_DEC:         -73.570d {-73d 34' 11"} (J2000),
                 -73.523d {-73d 31' 20"} (current),
                 -73.733d {-73d 44' 00"} (1950)
GRB_ERROR:       8.86 [deg radius, statistical only]
DATA_SIGNIF:     7.90 [sigma]
DATA_INTERVAL:   4.096 [sec]
GRB_DATE:        16739 TJD;    82 DOY;   14/03/23
GRB_TIME:        37373.12 SOD {10:22:53.12} UT
GRB_PHI:          72.00 [deg]
GRB_THETA:        42.00 [deg]
E_RANGE:         44.032 - 279.965 [keV]
LOC_ALGORITHM:   4143 (Gnd S/W Version number)
SUN_POSTN:         2.49d {+00h 09m 57s}   +1.08d {+01d 04' 41"}
SUN_DIST:         81.79 [deg]   Sun_angle= 3.7 [hr] (West of Sun)
MOON_POSTN:      264.00d {+17h 36m 00s}  -18.94d {-18d 56' 14"}
MOON_DIST:        59.52 [deg]
MOON_ILLUM:      57 [%]
GAL_COORDS:      320.83,-32.61 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      285.97,-52.16 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        Fermi-GBM Ground-calculated Coordinates.  
COMMENTS:        In the LAT Field-of-view.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Sun 23 Mar 14 10:23:35 UT
NOTICE_TYPE:     Fermi-GBM Flight Position
RECORD_NUM:      66
TRIGGER_NUM:     417262976
GRB_RA:          348.483d {+23h 13m 56s} (J2000),
                 348.808d {+23h 15m 14s} (current),
                 347.295d {+23h 09m 11s} (1950)
GRB_DEC:         -83.783d {-83d 46' 59"} (J2000),
                 -83.706d {-83d 42' 19"} (current),
                 -84.056d {-84d 03' 19"} (1950)
GRB_ERROR:       12.58 [deg radius, statistical plus systematic]
GRB_INTEN:       82 [cnts/sec]
DATA_SIGNIF:     8.00 [sigma]
INTEG_TIME:      4.096 [sec]
GRB_DATE:        16739 TJD;    82 DOY;   14/03/23
GRB_TIME:        37373.12 SOD {10:22:53.12} UT
GRB_PHI:          70.00 [deg]
GRB_THETA:        30.00 [deg]
DATA_TIME_SCALE: 4.0960 [sec]
HARD_RATIO:      1.10
LOC_ALGORITHM:   3 (version number of)
MOST_LIKELY:      96%  GRB
2nd_MOST_LIKELY:   1%  Distant Particles
DETECTORS:       0,1,0, 1,0,0, 0,0,0, 0,0,0, 0,0,
SUN_POSTN:         2.49d {+00h 09m 57s}   +1.08d {+01d 04' 41"}
SUN_DIST:         84.96 [deg]   Sun_angle= 0.9 [hr] (West of Sun)
MOON_POSTN:      264.00d {+17h 36m 00s}  -18.94d {-18d 56' 14"}
MOON_DIST:        70.61 [deg]
MOON_ILLUM:      57 [%]
GAL_COORDS:      305.98,-32.76 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      284.33,-64.62 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        Fermi-GBM Flight-calculated Coordinates.  
COMMENTS:        This trigger occurred at longitude,latitude = 92.65,-18.63 [deg].

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Sun 23 Mar 14 10:23:41 UT
NOTICE_TYPE:     Fermi-GBM Ground Position
RECORD_NUM:      68
TRIGGER_NUM:     417262976
GRB_RA:           29.160d {+01h 56m 38s} (J2000),
                  29.157d {+01h 56m 38s} (current),
                  29.181d {+01h 56m 43s} (1950)
GRB_DEC:         -78.290d {-78d 17' 23"} (J2000),
                 -78.221d {-78d 13' 14"} (current),
                 -78.533d {-78d 31' 58"} (1950)
GRB_ERROR:       5.50 [deg radius, statistical only]
DATA_SIGNIF:     10.00 [sigma]
DATA_INTERVAL:   4.096 [sec]
GRB_DATE:        16739 TJD;    82 DOY;   14/03/23
GRB_TIME:        37373.12 SOD {10:22:53.12} UT
GRB_PHI:          55.00 [deg]
GRB_THETA:        26.00 [deg]
E_RANGE:         44.032 - 279.965 [keV]
LOC_ALGORITHM:   4143 (Gnd S/W Version number)
SUN_POSTN:         2.49d {+00h 09m 57s}   +1.08d {+01d 04' 41"}
SUN_DIST:         80.56 [deg]   Sun_angle= -1.8 [hr] (East of Sun)
MOON_POSTN:      264.00d {+17h 36m 01s}  -18.94d {-18d 56' 14"}
MOON_DIST:        78.08 [deg]
MOON_ILLUM:      57 [%]
GAL_COORDS:      298.77,-38.31 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      300.68,-69.67 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        Fermi-GBM Ground-calculated Coordinates.  
COMMENTS:        In the LAT Field-of-view.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Sun 23 Mar 14 10:23:45 UT
NOTICE_TYPE:     Fermi-GBM Flight Position
RECORD_NUM:      70
TRIGGER_NUM:     417262976
GRB_RA:          344.667d {+22h 58m 40s} (J2000),
                 344.939d {+22h 59m 45s} (current),
                 343.693d {+22h 54m 46s} (1950)
GRB_DEC:         -77.050d {-77d 02' 59"} (J2000),
                 -76.974d {-76d 58' 24"} (current),
                 -77.318d {-77d 19' 03"} (1950)
GRB_ERROR:       6.55 [deg radius, statistical plus systematic]
GRB_INTEN:       401 [cnts/sec]
DATA_SIGNIF:     30.50 [sigma]
INTEG_TIME:      2.048 [sec]
GRB_DATE:        16739 TJD;    82 DOY;   14/03/23
GRB_TIME:        37373.12 SOD {10:22:53.12} UT
GRB_PHI:          61.00 [deg]
GRB_THETA:        35.00 [deg]
DATA_TIME_SCALE: 2.0480 [sec]
HARD_RATIO:      0.88
LOC_ALGORITHM:   3 (version number of)
MOST_LIKELY:      97%  GRB
2nd_MOST_LIKELY:   1%  Generic Transient
DETECTORS:       0,1,0, 1,0,0, 0,0,0, 0,0,0, 0,0,
SUN_POSTN:         2.49d {+00h 09m 57s}   +1.08d {+01d 04' 41"}
SUN_DIST:         78.67 [deg]   Sun_angle= 1.2 [hr] (West of Sun)
MOON_POSTN:      264.00d {+17h 36m 01s}  -18.94d {-18d 56' 14"}
MOON_DIST:        69.53 [deg]
MOON_ILLUM:      57 [%]
GAL_COORDS:      310.69,-38.33 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      296.06,-60.53 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        Fermi-GBM Flight-calculated Coordinates.  
COMMENTS:        This trigger occurred at longitude,latitude = 92.65,-18.63 [deg].

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Sun 23 Mar 14 10:23:50 UT
NOTICE_TYPE:     Fermi-GBM Flight Position
RECORD_NUM:      90
TRIGGER_NUM:     417262976
GRB_RA:          323.817d {+21h 35m 16s} (J2000),
                 324.274d {+21h 37m 06s} (current),
                 322.169d {+21h 28m 40s} (1950)
GRB_DEC:         -80.450d {-80d 27' 00"} (J2000),
                 -80.386d {-80d 23' 08"} (current),
                 -80.672d {-80d 40' 20"} (1950)
GRB_ERROR:       4.82 [deg radius, statistical plus systematic]
GRB_INTEN:       617 [cnts/sec]
DATA_SIGNIF:     46.00 [sigma]
INTEG_TIME:      2.048 [sec]
GRB_DATE:        16739 TJD;    82 DOY;   14/03/23
GRB_TIME:        37373.12 SOD {10:22:53.12} UT
GRB_PHI:          70.00 [deg]
GRB_THETA:        35.00 [deg]
DATA_TIME_SCALE: 2.0480 [sec]
HARD_RATIO:      0.69
LOC_ALGORITHM:   3 (version number of)
MOST_LIKELY:      96%  GRB
2nd_MOST_LIKELY:   3%  Generic Transient
DETECTORS:       0,1,0, 1,0,0, 0,0,0, 0,0,0, 0,0,
SUN_POSTN:         2.49d {+00h 09m 57s}   +1.08d {+01d 04' 41"}
SUN_DIST:         83.53 [deg]   Sun_angle= 2.5 [hr] (West of Sun)
MOON_POSTN:      264.00d {+17h 36m 01s}  -18.94d {-18d 56' 14"}
MOON_DIST:        66.53 [deg]
MOON_ILLUM:      57 [%]
GAL_COORDS:      311.54,-33.12 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      285.52,-59.97 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        Fermi-GBM Flight-calculated Coordinates.  
COMMENTS:        This trigger occurred at longitude,latitude = 92.65,-18.63 [deg].

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Sun 23 Mar 14 10:23:52 UT
NOTICE_TYPE:     Fermi-GBM Ground Position
RECORD_NUM:      69
TRIGGER_NUM:     417262976
GRB_RA:            3.940d {+00h 15m 46s} (J2000),
                   4.099d {+00h 16m 24s} (current),
                   3.373d {+00h 13m 30s} (1950)
GRB_DEC:         -76.350d {-76d 20' 59"} (J2000),
                 -76.271d {-76d 16' 15"} (current),
                 -76.628d {-76d 37' 39"} (1950)
GRB_ERROR:       2.19 [deg radius, statistical only]
DATA_SIGNIF:     33.20 [sigma]
DATA_INTERVAL:   2.048 [sec]
GRB_DATE:        16739 TJD;    82 DOY;   14/03/23
GRB_TIME:        37373.12 SOD {10:22:53.12} UT
GRB_PHI:          55.00 [deg]
GRB_THETA:        32.00 [deg]
E_RANGE:         44.032 - 279.965 [keV]
LOC_ALGORITHM:   4143 (Gnd S/W Version number)
SUN_POSTN:         2.49d {+00h 09m 57s}   +1.08d {+01d 04' 41"}
SUN_DIST:         77.35 [deg]   Sun_angle= -0.1 [hr] (East of Sun)
MOON_POSTN:      264.00d {+17h 36m 01s}  -18.94d {-18d 56' 14"}
MOON_DIST:        73.98 [deg]
MOON_ILLUM:      57 [%]
GAL_COORDS:      305.69,-40.59 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      302.35,-63.90 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        Fermi-GBM Ground-calculated Coordinates.  
COMMENTS:        In the LAT Field-of-view.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Sun 23 Mar 14 10:23:56 UT
NOTICE_TYPE:     Fermi-GBM Ground Position
RECORD_NUM:      89
TRIGGER_NUM:     417262976
GRB_RA:            4.870d {+00h 19m 29s} (J2000),
                   5.019d {+00h 20m 05s} (current),
                   4.339d {+00h 17m 21s} (1950)
GRB_DEC:         -78.360d {-78d 21' 35"} (J2000),
                 -78.281d {-78d 16' 51"} (current),
                 -78.638d {-78d 38' 14"} (1950)
GRB_ERROR:       1.43 [deg radius, statistical only]
DATA_SIGNIF:     50.40 [sigma]
DATA_INTERVAL:   2.048 [sec]
GRB_DATE:        16739 TJD;    82 DOY;   14/03/23
GRB_TIME:        37373.12 SOD {10:22:53.12} UT
GRB_PHI:          58.00 [deg]
GRB_THETA:        31.00 [deg]
E_RANGE:         44.032 - 279.965 [keV]
LOC_ALGORITHM:   4143 (Gnd S/W Version number)
SUN_POSTN:         2.49d {+00h 09m 57s}   +1.08d {+01d 04' 41"}
SUN_DIST:         79.37 [deg]   Sun_angle= -0.2 [hr] (East of Sun)
MOON_POSTN:      264.01d {+17h 36m 01s}  -18.94d {-18d 56' 14"}
MOON_DIST:        73.68 [deg]
MOON_ILLUM:      57 [%]
GAL_COORDS:      304.99,-38.64 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      298.27,-64.88 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        Fermi-GBM Ground-calculated Coordinates.  
COMMENTS:        In the LAT Field-of-view.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.

GCN NOTICE

 
TITLE:          GCN/INTEGRAL NOTICE
NOTICE_DATE:    Sun 23 Mar 14 10:24:21 UT
NOTICE_TYPE:    INTEGRAL SPI ACS Trigger
TRIGGER_NUM:    6559,   Sub_Num: 0
GRB_INTEN:      9.06 [sigma]   
GRB_TIME:       37391.29 SOD {10:23:11.29} UT
GRB_DATE:       16739 TJD;    82 DOY;   14/03/23
COMMENTS:       INTEGRAL SPI_ACS GRB Trigger.
COMMENTS:       Time_Scale=2.0000 and Time_Error=1.0000.
COMMENTS:
COMMENTS:       NOTE: This SPIACS event is temporally(18.0<100sec) coincident with the FERMI_GBM event (trignum=417262976).
COMMENTS:
COMMENTS:       The SPIACS lightcurve can be found at:
COMMENTS:       ftp://isdcarc.unige.ch/arc/FTP/ibas/spiacs/2014-03/2014-03-23T10-23-11.2410-22945-56208-0.lc

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 23 Mar 14 10:26:51 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     592916,   Seg_Num: 0
GRB_RA:          356.9656d {+23h 47m 51.74s} (J2000),
                 357.1705d {+23h 48m 40.91s} (current),
                 356.2312d {+23h 44m 55.47s} (1950)
GRB_DEC:         -79.9015d {-79d 54' 05.3"} (J2000),
                 -79.8224d {-79d 49' 20.7"} (current),
                 -80.1794d {-80d 10' 45.8"} (1950)
GRB_ERROR:       5.8 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.95e-08 [erg/cm2/sec]
GRB_SIGNIF:      5.83 [sigma]
IMG_START_DATE:  16739 TJD;    82 DOY;   14/03/23
IMG_START_TIME:  37489.40 SOD {10:24:49.40} UT,   97.5 [sec] since BAT Trigger Time
TAM[0-3]:        327.65 237.23 261.58 243.43
AMPLIFIER:       2
WAVEFORM:        134
SUN_POSTN:         2.49d {+00h 09m 58s}   +1.08d {+01d 04' 44"}
SUN_DIST:         80.95 [deg]   Sun_angle= 0.4 [hr] (West of Sun)
MOON_POSTN:      264.03d {+17h 36m 08s}  -18.94d {-18d 56' 13"}
MOON_DIST:        71.92 [deg]
MOON_ILLUM:      57 [%]
GAL_COORDS:      306.37,-36.80 [deg] galactic lon,lat of the burst
ECL_COORDS:      293.63,-64.10 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        The XRT position is 1.22 arcmin from the BAT position.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 23 Mar 14 10:27:33 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     592916,   Seg_Num: 0
GRB_RA:          356.888d {+23h 47m 33s} (J2000),
                 357.094d {+23h 48m 22s} (current),
                 356.151d {+23h 44m 36s} (1950)
GRB_DEC:         -79.917d {-79d 55' 00"} (J2000),
                 -79.838d {-79d 50' 14"} (current),
                 -80.195d {-80d 11' 40"} (1950)
GRB_DATE:        16739 TJD;    82 DOY;   14/03/23
GRB_TIME:        37391.91 SOD {10:23:11.91} UT
TRIGGER_INDEX:   155
GRB_PHI:         159.11 [deg]
GRB_THETA:        49.08 [deg]
DELTA_TIME:      -50.00 [sec]
TRIGGER_DUR:     1.024 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     35.25 [sigma]
IMAGE_SIGNIF:    7.58 [sigma]
LC_URL:          sw00592916000msb.lc
SUN_POSTN:         2.49d {+00h 09m 58s}   +1.08d {+01d 04' 45"}
SUN_DIST:         80.96 [deg]   Sun_angle= 0.4 [hr] (West of Sun)
MOON_POSTN:      264.04d {+17h 36m 10s}  -18.94d {-18d 56' 13"}
MOON_DIST:        71.91 [deg]
MOON_ILLUM:      57 [%]
GAL_COORDS:      306.38,-36.78 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      293.59,-64.10 [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 = 18.76,-20.40 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 23 Mar 14 10:27:05 UT
NOTICE_TYPE:     Swift-XRT Image
TRIGGER_NUM:     592916,   Seg_Num: 0
GRB_RA:          356.9656d {+23h 47m 51.7s} (J2000),
                 357.1705d {+23h 48m 40.9s} (current),
                 356.2312d {+23h 44m 55.4s} (1950)
GRB_DEC:         -79.9015d {-79d 54' 05.3"} (J2000),
                 -79.8224d {-79d 49' 20.7"} (current),
                 -80.1794d {-80d 10' 45.8"} (1950)
GRB_ERROR:       5.8 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       34 [cnts]
IMG_START_DATE:  16739 TJD;    82 DOY;   14/03/23
IMG_START_TIME:  37489.40 SOD {10:24:49.40} UT,   97.5 [sec] since BAT Trigger Time
CENTROID_X:      255.82,  raw= 256  [pixels]
CENTROID_Y:      280.68,  raw= 281  [pixels]
ROLL:            5.66 [deg]
GAIN:            1
MODE:            2, Short Image mode
WAVEFORM:        134
EXPO_TIME:       0.10 [sec]
GRB_POS_XRT_Y:   -40.34
GRB_POS_XRT_Z:   -116.62
IMAGE_URL:       sw00592916000msxps_rw.img
SUN_POSTN:         2.49d {+00h 09m 58s}   +1.08d {+01d 04' 45"}
SUN_DIST:         80.95 [deg]   Sun_angle= 0.4 [hr] (West of Sun)
MOON_POSTN:      264.04d {+17h 36m 09s}  -18.94d {-18d 56' 13"}
MOON_DIST:        71.92 [deg]
MOON_ILLUM:      57 [%]
GAL_COORDS:      306.37,-36.80 [deg] galactic lon,lat of the burst
ECL_COORDS:      293.63,-64.10 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 23 Mar 14 10:27:10 UT
NOTICE_TYPE:     Swift-XRT Processed Image
TRIGGER_NUM:     592916,   Seg_Num: 0
GRB_RA:          356.9656d {+23h 47m 51.7s} (J2000),
                 357.1705d {+23h 48m 40.9s} (current),
                 356.2312d {+23h 44m 55.4s} (1950)
GRB_DEC:         -79.9015d {-79d 54' 05.3"} (J2000),
                 -79.8224d {-79d 49' 20.7"} (current),
                 -80.1794d {-80d 10' 45.8"} (1950)
GRB_ERROR:       5.8 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       34 [cnts]
IMG_START_DATE:  16739 TJD;    82 DOY;   14/03/23
IMG_START_TIME:  37489.40 SOD {10:24:49.40} UT,   97.5 [sec] since BAT Trigger Time
CENTROID_X:      255.82,  raw= 256  [pixels]
CENTROID_Y:      280.68,  raw= 281  [pixels]
ROLL:            5.66 [deg]
GAIN:            1
MODE:            2, Short Image mode
WAVEFORM:        134
EXPO_TIME:       0.10 [sec]
GRB_POS_XRT_Y:   -40.34
GRB_POS_XRT_Z:   -116.62
IMAGE_URL:       sw00592916000msxps_rw.img
SUN_POSTN:         2.49d {+00h 09m 58s}   +1.08d {+01d 04' 45"}
SUN_DIST:         80.95 [deg]   Sun_angle= 0.4 [hr] (West of Sun)
MOON_POSTN:      264.04d {+17h 36m 09s}  -18.94d {-18d 56' 13"}
MOON_DIST:        71.92 [deg]
MOON_ILLUM:      57 [%]
GAL_COORDS:      306.37,-36.80 [deg] galactic lon,lat of the burst
ECL_COORDS:      293.63,-64.10 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Processed Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 23 Mar 14 10:29:02 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     592916,   Seg_Num: 0
POINT_RA:        356.875d {+23h 47m 30s} (J2000)
POINT_DEC:       -79.934d {-79d 56' 02"} (J2000)
POINT_ROLL:      5.671d
IMG_START_DATE:  16739 TJD;    82 DOY;   14/03/23
IMG_START_TIME:  37497.84 SOD {10:24:57.84} UT,   105.9 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        5.352
N_STARS:         39
X_OFFSET:        576 [pixels]
Y_OFFSET:        496 [pixels]
X_MAX:           1535 [pixels]
Y_MAX:           1455 [pixels]
DET_THRESH:      19
PHOTO_THRESH:    11
SL_URL:          sw00592916000msufc0105.fits
SUN_POSTN:         2.49d {+00h 09m 58s}   +1.08d {+01d 04' 46"}
SUN_DIST:         80.98 [deg]   Sun_angle= 0.4 [hr] (West of Sun)
MOON_POSTN:      264.06d {+17h 36m 14s}  -18.94d {-18d 56' 13"}
MOON_DIST:        71.90 [deg]
MOON_ILLUM:      57 [%]
GAL_COORDS:      306.38,-36.76 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      293.55,-64.10 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 23 Mar 14 10:29:27 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     592916,   Seg_Num: 0
POINT_RA:        356.875d {+23h 47m 30s} (J2000)
POINT_DEC:       -79.934d {-79d 56' 02"} (J2000)
POINT_ROLL:      5.671d
IMG_START_DATE:  16739 TJD;    82 DOY;   14/03/23
IMG_START_TIME:  37497.84 SOD {10:24:57.84} UT,   105.9 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        5.352
N_STARS:         39
X_OFFSET:        576 [pixels]
Y_OFFSET:        496 [pixels]
X_MAX:           1535 [pixels]
Y_MAX:           1455 [pixels]
DET_THRESH:      19
PHOTO_THRESH:    11
SL_URL:          sw00592916000msufc0105.fits
SUN_POSTN:         2.49d {+00h 09m 58s}   +1.08d {+01d 04' 47"}
SUN_DIST:         80.98 [deg]   Sun_angle= 0.4 [hr] (West of Sun)
MOON_POSTN:      264.06d {+17h 36m 15s}  -18.94d {-18d 56' 12"}
MOON_DIST:        71.90 [deg]
MOON_ILLUM:      57 [%]
GAL_COORDS:      306.38,-36.76 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      293.55,-64.10 [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:     Sun 23 Mar 14 10:31:07 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     592916,   Seg_Num: 0
POINT_RA:        356.875d {+23h 47m 30s} (J2000)
POINT_DEC:       -79.934d {-79d 56' 02"} (J2000)
ROLL:            5.671d
IMG_START_DATE:  16739 TJD;    82 DOY;   14/03/23
IMG_START_TIME:  37497.84 SOD {10:24:57.84} UT,   105.9 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     417263109
X_OFFSET:        1040 [pixels]
Y_OFFSET:        833 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1200
Y_GRB_POS:       993
BINNING_INDEX:   1
IM_URL:          sw00592916000msuni0117.fits
SUN_POSTN:         2.49d {+00h 09m 58s}   +1.08d {+01d 04' 49"}
SUN_DIST:         80.98 [deg]   Sun_angle= 0.4 [hr] (West of Sun)
MOON_POSTN:      264.08d {+17h 36m 19s}  -18.94d {-18d 56' 12"}
MOON_DIST:        71.90 [deg]
MOON_ILLUM:      57 [%]
GAL_COORDS:      306.38,-36.76 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      293.55,-64.10 [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:     Sun 23 Mar 14 10:31:28 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     592916,   Seg_Num: 0
POINT_RA:        356.875d {+23h 47m 30s} (J2000)
POINT_DEC:       -79.934d {-79d 56' 02"} (J2000)
ROLL:            5.671d
IMG_START_DATE:  16739 TJD;    82 DOY;   14/03/23
IMG_START_TIME:  37497.84 SOD {10:24:57.84} UT,   105.9 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     417263109
X_OFFSET:        1040 [pixels]
Y_OFFSET:        833 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1200
Y_GRB_POS:       993
BINNING_INDEX:   1
IM_URL:          sw00592916000msuni0117.fits
SUN_POSTN:         2.49d {+00h 09m 58s}   +1.08d {+01d 04' 49"}
SUN_DIST:         80.98 [deg]   Sun_angle= 0.4 [hr] (West of Sun)
MOON_POSTN:      264.08d {+17h 36m 20s}  -18.94d {-18d 56' 12"}
MOON_DIST:        71.90 [deg]
MOON_ILLUM:      57 [%]
GAL_COORDS:      306.38,-36.76 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      293.55,-64.10 [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:     Sun 23 Mar 14 10:37:59 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     592916,   Seg_Num: 0
POINT_RA:        356.883d {+23h 47m 32s} (J2000)
POINT_DEC:       -79.933d {-79d 55' 57"} (J2000)
POINT_ROLL:      5.662d
IMG_START_DATE:  16739 TJD;    82 DOY;   14/03/23
IMG_START_TIME:  37711.01 SOD {10:28:31.01} UT,   319.1 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        1.879
N_STARS:         34
X_OFFSET:        720 [pixels]
Y_OFFSET:        513 [pixels]
X_MAX:           1679 [pixels]
Y_MAX:           1472 [pixels]
DET_THRESH:      11
PHOTO_THRESH:    6
SL_URL:          sw00592916000msufc0319.fits
SUN_POSTN:         2.50d {+00h 09m 59s}   +1.08d {+01d 04' 55"}
SUN_DIST:         80.98 [deg]   Sun_angle= 0.4 [hr] (West of Sun)
MOON_POSTN:      264.15d {+17h 36m 36s}  -18.94d {-18d 56' 09"}
MOON_DIST:        71.89 [deg]
MOON_ILLUM:      57 [%]
GAL_COORDS:      306.38,-36.76 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      293.56,-64.10 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 23 Mar 14 10:38:05 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     592916,   Seg_Num: 0
POINT_RA:        356.883d {+23h 47m 32s} (J2000)
POINT_DEC:       -79.933d {-79d 55' 57"} (J2000)
POINT_ROLL:      5.662d
IMG_START_DATE:  16739 TJD;    82 DOY;   14/03/23
IMG_START_TIME:  37711.01 SOD {10:28:31.01} UT,   319.1 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        1.879
N_STARS:         34
X_OFFSET:        720 [pixels]
Y_OFFSET:        513 [pixels]
X_MAX:           1679 [pixels]
Y_MAX:           1472 [pixels]
DET_THRESH:      11
PHOTO_THRESH:    6
SL_URL:          sw00592916000msufc0319.fits
SUN_POSTN:         2.50d {+00h 09m 59s}   +1.08d {+01d 04' 55"}
SUN_DIST:         80.98 [deg]   Sun_angle= 0.4 [hr] (West of Sun)
MOON_POSTN:      264.15d {+17h 36m 36s}  -18.94d {-18d 56' 09"}
MOON_DIST:        71.89 [deg]
MOON_ILLUM:      57 [%]
GAL_COORDS:      306.38,-36.76 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      293.56,-64.10 [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:     Sun 23 Mar 14 10:38:38 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     592916,   Seg_Num: 0
GRB_RA:          356.9592d {+23h 47m 50.20s} (J2000),
                 357.1641d {+23h 48m 39.39s} (current),
                 356.2245d {+23h 44m 53.89s} (1950)
GRB_DEC:         -79.9050d {-79d 54' 18.0"} (J2000),
                 -79.8259d {-79d 49' 33.3"} (current),
                 -80.1829d {-80d 10' 58.4"} (1950)
GRB_ERROR:       2.2 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  16739 TJD;    82 DOY;   14/03/23
IMG_START_TIME:  37689.00 SOD {10:28:09.00} UT,   297.1 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:         2.50d {+00h 10m 00s}   +1.08d {+01d 04' 56"}
SUN_DIST:         80.95 [deg]   Sun_angle= 0.4 [hr] (West of Sun)
MOON_POSTN:      264.16d {+17h 36m 37s}  -18.94d {-18d 56' 09"}
MOON_DIST:        71.90 [deg]
MOON_ILLUM:      57 [%]
GAL_COORDS:      306.37,-36.80 [deg] galactic lon,lat of the burst
ECL_COORDS:      293.63,-64.10 [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:        This position was enhanced using UVOT field astrometry.  
COMMENTS:        The probability that this is a serendipitous source in the  
COMMENTS:        SPER window is 0.11% < P(seren) < 0.58%.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 23 Mar 14 10:38:54 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     592916,   Seg_Num: 0
POINT_RA:        356.883d {+23h 47m 32s} (J2000)
POINT_DEC:       -79.933d {-79d 55' 57"} (J2000)
ROLL:            5.662d
IMG_START_DATE:  16739 TJD;    82 DOY;   14/03/23
IMG_START_TIME:  37711.01 SOD {10:28:31.01} UT,   319.1 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     417263322
X_OFFSET:        1040 [pixels]
Y_OFFSET:        833 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1200
Y_GRB_POS:       993
BINNING_INDEX:   1
IM_URL:          sw00592916000msuni0331.fits
SUN_POSTN:         2.50d {+00h 10m 00s}   +1.08d {+01d 04' 56"}
SUN_DIST:         80.98 [deg]   Sun_angle= 0.4 [hr] (West of Sun)
MOON_POSTN:      264.16d {+17h 36m 38s}  -18.94d {-18d 56' 09"}
MOON_DIST:        71.89 [deg]
MOON_ILLUM:      57 [%]
GAL_COORDS:      306.38,-36.76 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      293.56,-64.10 [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:     Sun 23 Mar 14 10:39:05 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     592916,   Seg_Num: 0
POINT_RA:        356.883d {+23h 47m 32s} (J2000)
POINT_DEC:       -79.933d {-79d 55' 57"} (J2000)
ROLL:            5.662d
IMG_START_DATE:  16739 TJD;    82 DOY;   14/03/23
IMG_START_TIME:  37711.01 SOD {10:28:31.01} UT,   319.1 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     417263322
X_OFFSET:        1040 [pixels]
Y_OFFSET:        833 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1200
Y_GRB_POS:       993
BINNING_INDEX:   1
IM_URL:          sw00592916000msuni0331.fits
SUN_POSTN:         2.50d {+00h 10m 00s}   +1.08d {+01d 04' 56"}
SUN_DIST:         80.98 [deg]   Sun_angle= 0.4 [hr] (West of Sun)
MOON_POSTN:      264.16d {+17h 36m 38s}  -18.94d {-18d 56' 09"}
MOON_DIST:        71.89 [deg]
MOON_ILLUM:      57 [%]
GAL_COORDS:      306.38,-36.76 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      293.56,-64.10 [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 Circular #16027
E. Troja (NASA/GSFC/UMCP), V. D'Elia (ASDC), H. A. Krimm (CRESST/GSFC/USRA), C. J. Mountford (U Leicester), K. L. Page (U Leicester) and T. N. Ukwatta (MSU) report on behalf of the Swift Team:
At 10:23:11 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 140323A (trigger=592916). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 356.888, -79.917 which is
```
   RA(J2000) = 23h 47m 33s
   Dec(J2000) = -79d 55' 00"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a multi-peaked structure with a duration of about 120 sec. The peak count rate was ~6700 counts/sec (15-350 keV), at ~89 sec after the trigger.
The XRT began observing the field at 10:24:49.4 UT, 97.5 seconds after the BAT trigger. Using promptly downlinked data we find a bright, uncatalogued X-ray source with an enhanced position: RA, Dec 356.9593, -79.9050 which is equivalent to:
```
   RA(J2000)  = 23h 47m 50.23s
   Dec(J2000) = -79d 54' 17.9"
```
with an uncertainty of 2.2 arcseconds (radius, 90% containment). This location is 62 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 7.93 x 10^20 cm^-2 (Willingale et al. 2013).
The initial flux in the 0.1 s image was 1.95e-08 erg cm^-2 s^-1 (0.2-10 keV).
UVOT took a finding chart exposure of 150 seconds with the White filter starting 105 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 0.14.
Burst Advocate for this burst is E. Troja (eleonora.troja AT nasa.gov). 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 #16028
J.P. Osborne, A.P. Beardmore, P.A. Evans and M.R. Goad (U. Leicester) report on behalf of the Swift-XRT team.
Using 876 s of XRT Photon Counting mode data and 2 UVOT images for GRB 140323A, 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 = 356.95962, -79.90455 which is equivalent to:
```
RA (J2000): 23h 47m 50.31s
Dec (J2000): -79d 54' 16.4"
```
with an uncertainty of 1.6 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 #16029
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), E. Troja (NASA/GSFC/UMCP), J. Tueller (GSFC), T. N. Ukwatta (MSU) (i.e. the Swift-BAT team):
Using the data set from T-240 to T+693 sec from the recent telemetry downlink, we report further analysis of BAT GRB 140323A (trigger #592916) (Troja, et al., GCN Circ. 16027). The BAT ground-calculated position is RA, Dec = 356.975, -79.916 deg which is
```
    RA(J2000)  =  23h 47m 54.1s
    Dec(J2000) = -79d 54' 57.3"
```
with an uncertainty of 1.0 arcmin, (radius, sys+stat, 90% containment). The partial coding was 12%.
The mask-weighted light curve shows a complex structure. Low-level emission starts around T-60 sec, then the first episode runs from T-20 to T+55 sec, and is a slow rise and fall with multiple sub-peaks superimposed. The second episode has a similar shape and runs from T+60 to T+110 sec, followed by more low-level emission out to T+140 sec. The second episode is spectrally softer than the first. T90 (15-350 keV) is 104.9 +- 2.6 sec (estimated error including systematics).
The time-averaged spectrum from T-7.09 to T+117.37 sec is best fit by a power law with an exponential cutoff. This fit gives a photon index 1.35 +- 0.17, and Epeak of 127.1 +- 59.2 keV (chi squared 50.15 for 56 d.o.f.). For this model the total fluence in the 15-150 keV band is 1.6 +- 0.0 x 10^-05 erg/cm2 and the 1-sec peak flux measured from T+6.42 sec in the 15-150 keV band is 6.2 +- 0.7 ph/cm2/sec. A fit to a simple power law gives a photon index of 1.64 +- 0.04 (chi squared 59.02 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/592916/BA/
GCN Circular #16030
M. De Pasquale (UCL-MSSL) and E. Troja (NASA/GSFC/UMCP) report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 140323A 106 s after the BAT trigger (Troja et al., GCN Circ. 16027). No optical afterglow consistent with the XRT position (Osborne et al. GCN Circ. 16028) is detected in the initial UVOT exposures. Preliminary 3-sigma upper limits using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the first finding chart (FC) exposure and subsequent exposures are:
```
Filter         T_start(s)   T_stop(s)      Exp(s)         Mag

white_FC           106          256          147         >20.4
u_FC               319          569          246         >19.5
white              106          793          186         >20.5
v                  649         5918          216         >19.1
b                  574        12334          773         >20.2
u                  319         6532          462         >19.9
w1                 698         6328          216         >19.5
m2                5923        16174          725         >20.4
w2                 798          818           19         >17.9
```
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 #16031
M. Jelinek, J. C. Tello, R. Cunniffe, S. Jeong, O. Lara-Gil, J. Gorosabel (IAA-CSIC Granada), P. Kub=E1nek (IP-ASCR Praha), M. Wildi (Obs. Vermes), Ph. Yock (Univ. of Auckland), W. H. Allen (Vintage Lane Observatory) and A. J. Castro-Tirado (IAA-CSIC), on behalf of a larger collaboration, report:
"Following the detection of GRB 140323A by Swift (Troja et al., GCNC 16027), the 0.6m YA robotic telescope at the BOOTES-3 astronomical statio= n in Blenheim (New Zealand), responded ito the Swift BAT alert #592916. The co-add of the second set of unfiltered images starting at 10:26:15 UT and ending at 10:35:02 UT (i.e. 184-710 s postburst) reveals no optical afterglow at the enhanced Swift XRT position (Osborne et al., GCNC 16028) down to 18.5 mag. A first set only provides a shallower limit."
GCN Circular #16032
Subject: GRB 140323A: Fermi GBM observation
Hoi-Fung Yu and Andreas von Kienlin (MPE) report on behalf of the Fermi GBM Team:
"At 10:22:53.12 UT on 23 March 2014, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 140323A (trigger 417262976 / 140323433), which was also detected by Swift/BAT and XRT (Troja et al. 2014, GCN 16027). The GBM on-ground location is consistent with the Swift position.
The angle from the Fermi LAT boresight is 31 degrees.
The GBM light curve consists of multiple peaks in two main episodes with a duration (T90) of about 111 s (50-300 keV). The time-averaged spectrum from T0-2.560 s to T0+138.755 s is well fit by a power law function with an exponential high-energy cutoff. The power law index is -1.09 +/- 0.02 and the cutoff energy, parameterized as Epeak, is 142 +/- 4 keV
The event fluence (10-1000 keV) in this time interval is (3.15 +/- 0.05)E-05 erg/cm^2. The 1.024 s peak photon flux measured starting from T0+25.0884 s in the 10-1000 keV band is 9.7 +/- 0.3 ph/s/cm^2.
The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."
GCN Circular #16033
B. Sbarufatti (INAF-OAB/PSU), P. D'Avanzo (INAF-OAB), V. D'Elia (ASDC), M.C. Stroh (PSU), D.N. Burrows (PSU), J.A. Kennea (PSU), A.P. Beardmore (U. Leicester), P.A. Evans (U. Leicester), B.P. Gompertz (U. Leicester) and E. Troja report on behalf of the Swift-XRT team:
We have analysed 6.3 ks of XRT data for GRB 140323A (Troja et al. GCN Circ. 16027), from 90 s to 34.5 ks after the BAT trigger. The data comprise 650 s in Windowed Timing (WT) mode (the first 6 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. 16028).
The late-time light curve (from T0+5.7 ks) can be modelled with a power-law decay with a decay index of alpha=1.30 (+/-0.09).
A spectrum formed from the WT mode data can be fitted with an absorbed power-law with a photon spectral index of 1.73 (+/-0.06). The best-fitting absorption column is 5.0 (+/-0.4) x 10^21 cm^-2, in excess of the Galactic value of 7.9 x 10^20 cm^-2 (Willingale et al. 2013). The PC mode spectrum has a photon index of 2.00 (+/-0.12) and a best-fitting absorption column of 5.3 (+/-0.7) x 10^21 cm^-2. The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 4.2 x 10^-11 (6.8 x 10^-11) erg cm^-2 count^-1.
A summary of the PC-mode spectrum is thus:
```
Total column:	     5.3 (+/-0.7) x 10^21 cm^-2
Galactic foreground: 7.9 x 10^20 cm^-2
Excess significance: 10.8 sigma
Photon index:	     2.00 (+/-0.12)
```
If the light curve continues to decay with a power-law decay index of 1.30, the count rate at T+24 hours will be 0.033 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 1.4 x 10^-12 (2.3 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/00592916.
This circular is an official product of the Swift-XRT team.
GCN Circular #16034
G. Vianello (Stanford), F. Longo and E. Bissaldi (University and INFN Trieste) report on behalf of the Fermi-LAT team:
On March 23, 2014, Fermi-LAT detected high-energy emission from GRB 140323A, initially detected by Swift (Troja et al., GCN 16027) and also detected by Fermi-GBM (Yu et al., GCN 16032). We note that the GBM and the Swift trigger times are different. Here we will use as a reference the GBM trigger time, i.e. 10:22:53.12 UT.
The data from the Fermi-LAT show a significant increase in the event rate within 10 degrees of the Swift location. More than 11 photons above 100 MeV and 3 photons above 1 GeV are observed within 1000 seconds from the GBM trigger time. The highest-energy photon is a 2.5 GeV event, which is observed ~220 seconds after the trigger.
The best LAT on-ground location is found to be
RA, Dec 356.46, -79.87 (J2000)
with an error radius of 0.19 deg (90% containment, statistical error only). This is 0.09 deg from the Swift/XRT localization (GCN 16028) and is consistent with it. The source was 31 deg from the LAT boresight at the time of the trigger.
The Fermi-LAT point of contact for this burst is Daniel Kocevski (daniel.kocevski@nasa.gov).
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 #16035
S. Golenetskii, R.Aptekar, D. Frederiks, V. Pal'shin, P. Oleynik, M. Ulanov, D. Svinkin, A. Tsvetkova, and T. Cline on behalf of the Konus-Wind team, report:
A long-duration GRB 140323A (Swift-BAT trigger 592916: Troja et al., GCN 16027; Sakamoto et al., GCN 16029; Fermi-GBM detection: Yu & von Kienlin, GCN 16032; Fermi-LAT detection: Vianello et al., GCN 16034) triggered Konus-Wind at T0=37392.356 s UT (10:23:12.356).
The burst light curve shows multiple peaks in two major bursting episodes. A total duration of the burst is ~130 s. The emission is seen up to ~10 MeV.
As observed by Konus-Wind, the burst had a fluence of 3.1(-0.4,+0.7)x10^-5 erg/cm2, and a 64-ms peak flux, measured from T0+5.376 s, of 3.2(-0.6,+0.7)x10^-6 erg/cm2/s (both in the 20 keV - 10 MeV energy range).
The time-averaged spectrum (measured from T0 to T0+106.752 s) is best fit in the 20 keV - 18 MeV range by the GRB (Band) function with the following model parameters: the low-energy photon index alpha = -1.09 (-0.15,+0.31), the high energy photon index beta = -3.0 (-7.0,+0.6), the peak energy Ep = 127 (-24,+16) keV, chi2 = 93.4/97 dof.
The spectrum near the maximum count rate (measured from T0 to T0+8.448 s) is best fit in the 20 keV - 18 MeV range by the GRB (Band) function with the following model parameters: the low-energy photon index alpha = -0.79 (-0.18,+0.20), the high energy photon index beta = -2.7 (-6.0,+0.3), the peak energy Ep = 184 (-24,+31) keV, chi2 = 96.8/87 dof.
The Konus-Wind light curve of this GRB is available at http://www.ioffe.ru/LEA/GRBs/GRB140323_T37392/
All the quoted errors are at the 90% confidence level. All the quoted values are preliminary.
GCN Circular #16039
W. Iwakiri(RIKEN), M. Tashiro, Y. Terada, T. Yasuda, Y. Ishida, H. Ueno, S. Sugimoto, S. Koyama, S. Takeda, T. Nagayoshi (Saitama U.), M. Yamauchi, N. Ohmori, M. Akiyama, R. Kinoshita (Univ. of Miyazaki), M. Ohno, K. Takaki, T. Kawano, R. Nakamura, S. Furui, Y. Fukazawa (Hiroshima U.), K. Yamaoka (Nagoya U.), S. Sugita (Ehime U.), Y. Hanabata (ICRR), Y. E. Nakagawa, M. Kokubun, T. Takahashi (ISAS/JAXA), Y. Urata (NCU), K. Nakazawa, K. Makishima (Univ. of Tokyo) on behalf of the Suzaku WAM team, report:
The long GRB 140323A (Swift/BAT trigger #592916 ; Troja et al., GCN 16027; Sakamoto et al., GCN 16029; Fermi-GBM detection : Yu and von Kienlin, GCN 16032; Fermi-LAT detection: Vianello et al., GCN 16034; Konus-Wind detection : Golenetskii et al., GCN16035) triggered the Suzaku Wide-band All-sky Monitor (WAM) which covers an energy range of 50 keV - 5 MeV at 10:23:12.262 UT (=T0).
The observed light curve shows a multi-peaked structure in two main episodes lasting from T0-15 s to T0+95 s with a duration (T90) of about 90 seconds. The fluence in 100 - 1000 keV was 1.36 (+/- 0.12) x10^-6 erg/cm^2. The 1-s peak flux measured from T0+6 s was 2.17 (+0.35, -0.45) photons/cm^2/s in the same energy range.
Preliminary result shows that the time-averaged spectrum from T0-10 s to T0+95 s is well fitted in 200 keV to 5 MeV by a single power-law with a photon index of 2.64 (+0.34, -0.28) (chi^2/d.o.f = 12.5/14).
All the quoted errors are at statistical 90% confidence level, in which the systematic uncertainties are not included.
The light curves for this burst will be available at:
http://www.astro.isas.jaxa.jp/suzaku/HXD-WAM/WAM-GRB/grb/trig/grb_table.html
GCN Circular #16059
A. Klotz, D. Turpin (IRAP-CNRS-OMP), D. Macpherson (UWA/ICRAR), D. Coward (UWA), M. Boer, B. Gendre, K. Siellez, H. Dereli, O. Bardho (UNS-CNRS-OCA), A. Williams (PO-UWA), R. Martin (PO-UWA) report:
We imaged the field of GRB 140323A detected by SWIFT (trigger 592916) with the Zadko robotic telescope (D=100cm) located at the observatory - Gingin, Australia.
The observations started 1.0 hour after the GRB trigger. The elevation of the field was at 27 degrees above horizon and weather conditions were good.
We co-added a series of exposures. We do not detect any optical candidate in the XRT error box provided by Troja et al. (GCNC 16027) at the limiting magnitude of:
From t0+1.0h to t0+1.6h Rlim=20.8
Magnitudes were estimated with the nearby USNO-B1 stars and are not corrected for galactic dust extinction.
N.B. Galactic coordinates are lon=306.3802 lat=-36.7801

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Jochen Greiner, last update: 31-Mar-2014 [Disclaimer]