Gamma-ray Burst 080517

(All information courtesy of the instrument teams.)

Previous IAU Circulars

none

Results of Observations

GCN/BACODINE POSITION NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 17 May 08 21:23:50 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     311874,   Seg_Num: 0
GRB_RA:          102.255d {+06h 49m 01s} (J2000),
                 102.418d {+06h 49m 40s} (current),
                 101.280d {+06h 45m 07s} (1950)
GRB_DEC:         +50.731d {+50d 43' 51"} (J2000),
                 +50.721d {+50d 43' 15"} (current),
                 +50.787d {+50d 47' 15"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       31916 [cnts]    Image_Peak=615 [image_cnts]
TRIGGER_DUR:     8.192 [sec] 
TRIGGER_INDEX:   336     E_range: 25-100 keV
BKG_INTEN:       237492 [cnts]
BKG_TIME:        76877.20 SOD {21:21:17.20} UT
BKG_DUR:         64 [sec]
GRB_DATE:        14603 TJD;   138 DOY;   08/05/17
GRB_TIME:        76971.98 SOD {21:22:51.98} UT
GRB_PHI:         -68.23 [deg]
GRB_THETA:        29.17 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     11.83 [sigma]
IMAGE_SIGNIF:    9.81 [sigma]
MERIT_PARAMS:     +1  +0  +0  +3  +2  +1  +0  +0 -66  +1 
SUN_POSTN:        55.04d {+03h 40m 11s}  +19.56d {+19d 33' 39"}
SUN_DIST:         48.46 [deg]   Sun_angle= -3.2 [hr] (East of Sun)
MOON_POSTN:      209.17d {+13h 56m 41s}  -16.94d {-16d 56' 36"}
MOON_DIST:       113.59 [deg]
MOON_ILLUM:      96 [%]
GAL_COORDS:      165.38, 20.31 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       98.72, 27.66 [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 = 301.00,20.16 [deg].

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 17 May 08 21:25:05 UT
NOTICE_TYPE:     Swift-XRT Nack-Position
TRIGGER_NUM:     311874,   Seg_Num: 0
POINT_RA:        102.252d {+06h 49m 01s} (J2000)
POINT_DEC:       +50.730d {+50d 43' 48"} (J2000)
IMG_START_DATE:  14603 TJD;   138 DOY;   08/05/17
IMG_START_TIME:  77097.51 SOD {21:24:57.51} UT,   125.5 [sec] since BAT Trigger Time
COUNTS:          17    Min_needed= 20
STD_DEV:         0.00   Max_StdDev_for_Good=28.44 [arcsec]
PH2_ITER:        2    Max_iter_allowed= 4
ERROR_CODE:      1
COMMENTS:        SWIFT-XRT Nack Position.  
COMMENTS:        No source found in the image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 17 May 08 21:26:55 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     311874,   Seg_Num: 0
GRB_RA:          102.255d {+06h 49m 01s} (J2000),
                 102.418d {+06h 49m 40s} (current),
                 101.280d {+06h 45m 07s} (1950)
GRB_DEC:         +50.731d {+50d 43' 51"} (J2000),
                 +50.721d {+50d 43' 15"} (current),
                 +50.787d {+50d 47' 15"} (1950)
GRB_DATE:        14603 TJD;   138 DOY;   08/05/17
GRB_TIME:        76971.98 SOD {21:22:51.98} UT
TRIGGER_INDEX:   336
GRB_PHI:         -68.23 [deg]
GRB_THETA:        29.17 [deg]
DELTA_TIME:      -37.00 [sec]
TRIGGER_DUR:     8.192 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     11.83 [sigma]
IMAGE_SIGNIF:    9.81 [sigma]
LC_URL:          sw00311874000msb.lc
SUN_POSTN:        55.05d {+03h 40m 11s}  +19.56d {+19d 33' 40"}
SUN_DIST:         48.46 [deg]   Sun_angle= -3.2 [hr] (East of Sun)
MOON_POSTN:      209.20d {+13h 56m 47s}  -16.95d {-16d 57' 11"}
MOON_DIST:       113.61 [deg]
MOON_ILLUM:      96 [%]
GAL_COORDS:      165.38, 20.31 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       98.72, 27.66 [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 = 301.00,20.16 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 17 May 08 21:28:13 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     311874,   Seg_Num: 0
POINT_RA:        102.253d {+06h 49m 01s} (J2000)
POINT_DEC:       +50.730d {+50d 43' 47"} (J2000)
POINT_ROLL:      247.714d
IMG_START_DATE:  14603 TJD;   138 DOY;   08/05/17
IMG_START_TIME:  77102.04 SOD {21:25:02.04} UT,   130.1 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        3.102
N_STARS:         53
X_OFFSET:        482 [pixels]
Y_OFFSET:        559 [pixels]
X_MAX:           1441 [pixels]
Y_MAX:           1518 [pixels]
DET_THRESH:      15
PHOTO_THRESH:    8
SL_URL:          sw00311874000msufc0130.fits
SUN_POSTN:        55.05d {+03h 40m 11s}  +19.56d {+19d 33' 41"}
SUN_DIST:         48.45 [deg]   Sun_angle= -3.1 [hr] (East of Sun)
MOON_POSTN:      209.21d {+13h 56m 49s}  -16.96d {-16d 57' 26"}
MOON_DIST:       113.62 [deg]
MOON_ILLUM:      96 [%]
GAL_COORDS:      165.38, 20.31 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       98.72, 27.66 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 17 May 08 21:28:44 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     311874,   Seg_Num: 0
POINT_RA:        102.253d {+06h 49m 01s} (J2000)
POINT_DEC:       +50.730d {+50d 43' 47"} (J2000)
POINT_ROLL:      247.714d
IMG_START_DATE:  14603 TJD;   138 DOY;   08/05/17
IMG_START_TIME:  77102.04 SOD {21:25:02.04} UT,   130.1 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        3.102
N_STARS:         53
X_OFFSET:        482 [pixels]
Y_OFFSET:        559 [pixels]
X_MAX:           1441 [pixels]
Y_MAX:           1518 [pixels]
DET_THRESH:      15
PHOTO_THRESH:    8
SL_URL:          sw00311874000msufc0130.fits
SUN_POSTN:        55.05d {+03h 40m 11s}  +19.56d {+19d 33' 41"}
SUN_DIST:         48.45 [deg]   Sun_angle= -3.1 [hr] (East of Sun)
MOON_POSTN:      209.21d {+13h 56m 50s}  -16.96d {-16d 57' 31"}
MOON_DIST:       113.63 [deg]
MOON_ILLUM:      96 [%]
GAL_COORDS:      165.38, 20.31 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       98.72, 27.66 [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:     Sat 17 May 08 21:29:35 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     311874,   Seg_Num: 0
POINT_RA:        102.253d {+06h 49m 01s} (J2000)
POINT_DEC:       +50.730d {+50d 43' 47"} (J2000)
ROLL:            247.714d
IMG_START_DATE:  14603 TJD;   138 DOY;   08/05/17
IMG_START_TIME:  77102.04 SOD {21:25:02.04} UT,   130.1 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     232752304
X_OFFSET:        801 [pixels]
Y_OFFSET:        878 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       961
Y_GRB_POS:       1038
BINNING_INDEX:   1
IM_URL:          sw00311874000msuni0130.fits
SUN_POSTN:        55.05d {+03h 40m 11s}  +19.56d {+19d 33' 42"}
SUN_DIST:         48.45 [deg]   Sun_angle= -3.1 [hr] (East of Sun)
MOON_POSTN:      209.22d {+13h 56m 52s}  -16.96d {-16d 57' 41"}
MOON_DIST:       113.63 [deg]
MOON_ILLUM:      96 [%]
GAL_COORDS:      165.38, 20.31 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       98.72, 27.66 [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 NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 17 May 08 21:30:01 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     311874,   Seg_Num: 0
POINT_RA:        102.253d {+06h 49m 01s} (J2000)
POINT_DEC:       +50.730d {+50d 43' 47"} (J2000)
ROLL:            247.714d
IMG_START_DATE:  14603 TJD;   138 DOY;   08/05/17
IMG_START_TIME:  77102.04 SOD {21:25:02.04} UT,   130.1 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     232752304
X_OFFSET:        801 [pixels]
Y_OFFSET:        878 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       961
Y_GRB_POS:       1038
BINNING_INDEX:   1
IM_URL:          sw00311874000msuni0130.fits
SUN_POSTN:        55.05d {+03h 40m 12s}  +19.56d {+19d 33' 42"}
SUN_DIST:         48.45 [deg]   Sun_angle= -3.1 [hr] (East of Sun)
MOON_POSTN:      209.22d {+13h 56m 53s}  -16.96d {-16d 57' 46"}
MOON_DIST:       113.64 [deg]
MOON_ILLUM:      96 [%]
GAL_COORDS:      165.38, 20.31 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       98.72, 27.66 [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:        If you have elected to receive attachments:  
COMMENTS:        The uvot_sources_image.fits.gz file does not exist; skipping the attachment.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 17 May 08 21:38:23 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     311874,   Seg_Num: 0
POINT_RA:        102.256d {+06h 49m 01s} (J2000)
POINT_DEC:       +50.730d {+50d 43' 49"} (J2000)
POINT_ROLL:      247.717d
IMG_START_DATE:  14603 TJD;   138 DOY;   08/05/17
IMG_START_TIME:  77208.15 SOD {21:26:48.15} UT,   236.2 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        3.328
N_STARS:         67
X_OFFSET:        482 [pixels]
Y_OFFSET:        559 [pixels]
X_MAX:           1441 [pixels]
Y_MAX:           1518 [pixels]
DET_THRESH:      15
PHOTO_THRESH:    8
SL_URL:          sw00311874000msufc0236.fits
SUN_POSTN:        55.05d {+03h 40m 13s}  +19.56d {+19d 33' 47"}
SUN_DIST:         48.45 [deg]   Sun_angle= -3.1 [hr] (East of Sun)
MOON_POSTN:      209.29d {+13h 57m 09s}  -16.99d {-16d 59' 19"}
MOON_DIST:       113.70 [deg]
MOON_ILLUM:      96 [%]
GAL_COORDS:      165.38, 20.31 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       98.73, 27.66 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 17 May 08 21:38:50 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     311874,   Seg_Num: 0
POINT_RA:        102.256d {+06h 49m 01s} (J2000)
POINT_DEC:       +50.730d {+50d 43' 49"} (J2000)
POINT_ROLL:      247.717d
IMG_START_DATE:  14603 TJD;   138 DOY;   08/05/17
IMG_START_TIME:  77208.15 SOD {21:26:48.15} UT,   236.2 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        3.328
N_STARS:         67
X_OFFSET:        482 [pixels]
Y_OFFSET:        559 [pixels]
X_MAX:           1441 [pixels]
Y_MAX:           1518 [pixels]
DET_THRESH:      15
PHOTO_THRESH:    8
SL_URL:          sw00311874000msufc0236.fits
SUN_POSTN:        55.05d {+03h 40m 13s}  +19.56d {+19d 33' 47"}
SUN_DIST:         48.45 [deg]   Sun_angle= -3.1 [hr] (East of Sun)
MOON_POSTN:      209.29d {+13h 57m 10s}  -16.99d {-16d 59' 24"}
MOON_DIST:       113.70 [deg]
MOON_ILLUM:      96 [%]
GAL_COORDS:      165.38, 20.31 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       98.73, 27.66 [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:     Sat 17 May 08 21:38:56 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     311874,   Seg_Num: 0
GRB_RA:          102.2419d {+06h 48m 58.0s} (J2000),
                 102.4049d {+06h 49m 37.1s} (current),
                 101.2676d {+06h 45m 04.2s} (1950)
GRB_DEC:         +50.7350d {+50d 44' 05.9"} (J2000),
                 +50.7250d {+50d 43' 30.1"} (current),
                 +50.7917d {+50d 47' 30.1"} (1950)
GRB_ERROR:       2.5 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  14603 TJD;   138 DOY;   08/05/17
IMG_START_TIME:  77114.00 SOD {21:25:14.00} UT,   142.0 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:        55.05d {+03h 40m 13s}  +19.56d {+19d 33' 47"}
SUN_DIST:         48.44 [deg]   Sun_angle= -3.2 [hr] (East of Sun)
MOON_POSTN:      209.29d {+13h 57m 10s}  -16.99d {-16d 59' 26"}
MOON_DIST:       113.71 [deg]
MOON_ILLUM:      96 [%]
GAL_COORDS:      165.37, 20.30 [deg] galactic lon,lat of the burst
ECL_COORDS:       98.72, 27.67 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
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

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 17 May 08 21:39:47 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     311874,   Seg_Num: 0
POINT_RA:        102.256d {+06h 49m 01s} (J2000)
POINT_DEC:       +50.730d {+50d 43' 49"} (J2000)
ROLL:            247.717d
IMG_START_DATE:  14603 TJD;   138 DOY;   08/05/17
IMG_START_TIME:  77208.15 SOD {21:26:48.15} UT,   236.2 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     232752410
X_OFFSET:        801 [pixels]
Y_OFFSET:        878 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       961
Y_GRB_POS:       1038
BINNING_INDEX:   1
IM_URL:          sw00311874000msuni0236.fits
SUN_POSTN:        55.05d {+03h 40m 13s}  +19.56d {+19d 33' 47"}
SUN_DIST:         48.45 [deg]   Sun_angle= -3.1 [hr] (East of Sun)
MOON_POSTN:      209.30d {+13h 57m 12s}  -16.99d {-16d 59' 35"}
MOON_DIST:       113.71 [deg]
MOON_ILLUM:      96 [%]
GAL_COORDS:      165.38, 20.31 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       98.73, 27.66 [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 NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 17 May 08 21:40:07 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     311874,   Seg_Num: 0
POINT_RA:        102.256d {+06h 49m 01s} (J2000)
POINT_DEC:       +50.730d {+50d 43' 49"} (J2000)
ROLL:            247.717d
IMG_START_DATE:  14603 TJD;   138 DOY;   08/05/17
IMG_START_TIME:  77208.15 SOD {21:26:48.15} UT,   236.2 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     232752410
X_OFFSET:        801 [pixels]
Y_OFFSET:        878 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       961
Y_GRB_POS:       1038
BINNING_INDEX:   1
IM_URL:          sw00311874000msuni0236.fits
SUN_POSTN:        55.06d {+03h 40m 13s}  +19.56d {+19d 33' 48"}
SUN_DIST:         48.45 [deg]   Sun_angle= -3.1 [hr] (East of Sun)
MOON_POSTN:      209.30d {+13h 57m 12s}  -16.99d {-16d 59' 39"}
MOON_DIST:       113.71 [deg]
MOON_ILLUM:      96 [%]
GAL_COORDS:      165.38, 20.31 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       98.73, 27.66 [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:        If you have elected to receive attachments:  
COMMENTS:        The uvot_sources_image.fits.gz file does not exist; skipping the attachment.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 17 May 08 21:40:23 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     311874,   Seg_Num: 0
POINT_RA:        102.253d {+06h 49m 01s} (J2000)
POINT_DEC:       +50.730d {+50d 43' 47"} (J2000)
POINT_ROLL:      247.714d
IMG_START_DATE:  14603 TJD;   138 DOY;   08/05/17
IMG_START_TIME:  77844.01 SOD {21:37:24.01} UT,   872.0 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        1.442
N_STARS:         50
X_OFFSET:        482 [pixels]
Y_OFFSET:        559 [pixels]
X_MAX:           1441 [pixels]
Y_MAX:           1518 [pixels]
DET_THRESH:      10
PHOTO_THRESH:    5
SL_URL:          sw00311874000msufc0872.fits
SUN_POSTN:        55.06d {+03h 40m 13s}  +19.56d {+19d 33' 48"}
SUN_DIST:         48.45 [deg]   Sun_angle= -3.1 [hr] (East of Sun)
MOON_POSTN:      209.30d {+13h 57m 13s}  -17.00d {-16d 59' 42"}
MOON_DIST:       113.71 [deg]
MOON_ILLUM:      96 [%]
GAL_COORDS:      165.38, 20.31 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       98.72, 27.66 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.  
COMMENTS:        The Pointing RA,Dec,Roll values came from the 1st SrcList Notice.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 17 May 08 21:40:51 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     311874,   Seg_Num: 0
POINT_RA:        102.253d {+06h 49m 01s} (J2000)
POINT_DEC:       +50.730d {+50d 43' 47"} (J2000)
POINT_ROLL:      247.714d
IMG_START_DATE:  14603 TJD;   138 DOY;   08/05/17
IMG_START_TIME:  77844.01 SOD {21:37:24.01} UT,   872.0 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        1.442
N_STARS:         50
X_OFFSET:        482 [pixels]
Y_OFFSET:        559 [pixels]
X_MAX:           1441 [pixels]
Y_MAX:           1518 [pixels]
DET_THRESH:      10
PHOTO_THRESH:    5
SL_URL:          sw00311874000msufc0872.fits
SUN_POSTN:        55.06d {+03h 40m 13s}  +19.56d {+19d 33' 48"}
SUN_DIST:         48.45 [deg]   Sun_angle= -3.1 [hr] (East of Sun)
MOON_POSTN:      209.31d {+13h 57m 14s}  -17.00d {-16d 59' 47"}
MOON_DIST:       113.72 [deg]
MOON_ILLUM:      96 [%]
GAL_COORDS:      165.38, 20.31 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       98.72, 27.66 [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:     Sat 17 May 08 21:41:49 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     311874,   Seg_Num: 0
POINT_RA:        102.253d {+06h 49m 01s} (J2000)
POINT_DEC:       +50.730d {+50d 43' 47"} (J2000)
ROLL:            247.714d
IMG_START_DATE:  14603 TJD;   138 DOY;   08/05/17
IMG_START_TIME:  77844.01 SOD {21:37:24.01} UT,   872.0 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     232753046
X_OFFSET:        801 [pixels]
Y_OFFSET:        878 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       961
Y_GRB_POS:       1038
BINNING_INDEX:   1
IM_URL:          sw00311874000msuni0872.fits
SUN_POSTN:        55.06d {+03h 40m 14s}  +19.56d {+19d 33' 49"}
SUN_DIST:         48.45 [deg]   Sun_angle= -3.1 [hr] (East of Sun)
MOON_POSTN:      209.32d {+13h 57m 16s}  -17.00d {-16d 59' 58"}
MOON_DIST:       113.72 [deg]
MOON_ILLUM:      96 [%]
GAL_COORDS:      165.38, 20.31 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       98.72, 27.66 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Image.  
COMMENTS:        The Pointing RA,Dec,Roll values came from the 1st Image Notice.  
COMMENTS:        The GRB Position came from the Window Position in the Mode Command.  
COMMENTS:        The image has 2x2 binning (compression).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 17 May 08 21:42:15 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     311874,   Seg_Num: 0
POINT_RA:        102.253d {+06h 49m 01s} (J2000)
POINT_DEC:       +50.730d {+50d 43' 47"} (J2000)
ROLL:            247.714d
IMG_START_DATE:  14603 TJD;   138 DOY;   08/05/17
IMG_START_TIME:  77844.01 SOD {21:37:24.01} UT,   872.0 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     232753046
X_OFFSET:        801 [pixels]
Y_OFFSET:        878 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       961
Y_GRB_POS:       1038
BINNING_INDEX:   1
IM_URL:          sw00311874000msuni0872.fits
SUN_POSTN:        55.06d {+03h 40m 14s}  +19.56d {+19d 33' 49"}
SUN_DIST:         48.45 [deg]   Sun_angle= -3.1 [hr] (East of Sun)
MOON_POSTN:      209.32d {+13h 57m 17s}  -17.00d {-17d 00' 03"}
MOON_DIST:       113.73 [deg]
MOON_ILLUM:      96 [%]
GAL_COORDS:      165.38, 20.31 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       98.72, 27.66 [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:        If you have elected to receive attachments:  
COMMENTS:        The uvot_sources_image.fits.gz file does not exist; skipping the attachment.

GCN Circular #7742
A. M. Parsons (GSFC), A. P. Beardmore (U Leicester), D. N. Burrows (PSU), J. R. Cummings (NASA/UMBC), P. A. Evans (U Leicester), N. Gehrels (NASA/GSFC), S. T. Holland (CRESST/USRA/GSFC), E. A. Hoversten (PSU), C. B. Markwardt (CRESST/GSFC/UMD), F. E. Marshall (NASA/GSFC), P. T. O'Brien (U Leicester), K. L. Page (U Leicester), D. M. Palmer (LANL) and E. Troja (U Leicester/INAF-IASFPA) report on behalf of the Swift Team:
At 21:22:51 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 080517 (trigger=311874). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 102.255, +50.731 which is
```
   RA(J2000) = 06h 49m 01s
   Dec(J2000) = +50d 43' 51"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a single-peaked structure with a duration of about 20 sec. The peak count rate was ~500 counts/sec (15-350 keV), at ~0 sec after the trigger.
The XRT began observing the field at 21:24:57.5 UT, 125.5 seconds after the BAT trigger. Using promptly downlinked data we find a fading, uncatalogued X-ray source with an enhanced position: RA, Dec 102.24274, 50.73512 which is equivalent to:
```
   RA(J2000)  = 06h 48m 58.26s
   Dec(J2000) = +50d 44' 06.4"
```
with an uncertainty of 2.7 arcseconds (radius, 90% containment). This location is 31 arcseconds from the BAT onboard position, within the BAT error circle. We note that a known, 18th magnitude optical source lies within our error circle; this is identified as a galaxy, EO0691-0008689, in the APM-North survey.
A power-law fit to a spectrum formed from promptly downlinked event data gives a column density in excess of the Galactic value (8.12e+20 cm^-2, Kalberla et al. 2005), with an excess column of 2.5 (+1.70/-1.44) x 10^21 cm^-2 (90% confidence). The relation of Grupe et al. (2007) implies that this burst has a redshift z<4.8, although high redshift fits to the absorbed XRT spectrum are possible if paired with an anomalously large column. A summary of the promptly downlinked data is given at http://www.swift.ac.uk/sper/311874/.
UVOT took a finding chart exposure of 100 seconds with the White (160-650 nm) filter starting 130 seconds after the BAT trigger. A 400 second exposure with the V filter was taken starting 236 seconds after the BAT trigger. There is no evidence for an afterglow, however there is a known object within the XRT error circle visible in the UVOT images. The 2.7'x2.7' sub-image covers 100% of the XRT error circle. The typical 3-sigma upper limit has been about 18.5 mag in both images. No correction has been made for the expected extinction corresponding to E(B-V) of 0.11.
Burst Advocate for this burst is A. M. Parsons (parsons AT milkyway.gsfc.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 #7743
R.J. Smith (Liverpool JMU), A. Gomboc (Univ. of Ljubljana, Slovenia), A. Melandri, C. Guidorzi, M. Burgdorf, C.G. Mundell, I.A. Steele, D. Carter, A. Monfardini, C.J. Mottram, S. Kobayashi, D. Bersier (Liverpool JMU) report:
The 2-m Liverpool Telescope started observing the field of GRB 080517 (Parsons et al. GCN 7742) at 3 min after the trigger time.
No optical transient has been located in our images to the following magnitude limits:
```
Filter      t_mid (min from GRB)    Exp (s)       Lim
------------------------------------------------------------------
R             16.08                  120          19.6
I             18.93                  120          19.2
------------------------------------------------------------------
Magnitudes were calibrated vs the USNOB1 catalogue.
```
In particular, comparison with Digitized Sky Survey images shows no obvious additional optical source in the vicinity of the known, moderately bright object noted to be within the XRT error circle.
Observations stopped one hour after the burst time. No further observations are currently planned.
GCN Circular #7744
P.A. Evans, M.R. Goad, J.P. Osborne and A.P. Beardmore (U. Leicester) report on behalf of the Swift-XRT team.
Using 88 s of overlapping XRT Photon Counting mode and UVOT data for GRB 080517, 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 = 102.24189, +50.73496 which is equivalent to:
```
RA (J2000): 06h 48m 58.05s
Dec (J2000): +50d 44' 05.8"
```
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 http://www.swift.ac.uk/xrt_positions/Goad.pdf), the current algorithm is an extension of this method.
This circular was automatically generated, and is an official product of the Swift-XRT team.
GCN Circular #7746
P. A. Evans (U. Leicester) and A.M. Parsons (GSFC) report on behalf of the Swift-XRT team:
We have analysed the first two snapshots of Swift-XRT data obtained for GRB 080517 (Parsons et al, GCN Circ. 7742), comprising 3.3 ks in Photon Counting (PC) mode, starting 144 s after the BAT trigger. The UVOT-enhanced XRT position was given in Evans et al. (GCN Circ. 7744)
The light curve can be described as a broken power-law, with an initial decay of 2.47 (+0.25/-0.23), with a break at T+~1100s to a slope of 0.57 (+0.25/-0.74).
A spectrum obtained from all of the PC data can be modelled with an absorbed power-law, with gamma=1.91 (+0.36/-0.34) and an absorption column of 1.41 (+0.10/1.11) e21 cm^-2, in excess of the Galactic value of 8.12e20 cm^-2 (Kalberla et al. 2005). The observed (unabsorbed) flux in this spectrum is 6.07 (8.12) e-12 erg cm^-2 s^-1. The counts to observed flux conversion is 5.93e-11 erg cm^-2 count^-1.
If the light-curve continues to decay at alpha=0.57 the count rate at 24 hours is predicted to be 1.6e-3 count s-1, corresponding to an observed (unabsorbed) flux of 7.10 (9.49) e-14 erg cm^-2 s^-1.
This is an official product of the Swift-XRT team.
GCN Circular #7748
C. Markwardt (GSFC/UMD), S. D. Barthelmy (GSFC), W. Baumgartner (GSFC/ UMBC), J. Cummings (GSFC/UMBC), E. Fenimore (LANL), N. Gehrels (GSFC), H. Krimm (GSFC/USRA), K. McLean (GSFC/UMD), D. Palmer (LANL), A. Parsons (GSFC), T. Sakamoto (GSFC/UMBC), G. Sato (GSFC/ISAS), M. Stamatikos (GSFC/ORAU), J. Tueller (GSFC), T. Ukwatta (GWU) (i.e. the Swift-BAT team):
Using the data set from T-240 to T+962 sec from the recent telemetry downlink, we report further analysis of BAT GRB 080517 (trigger #311874) (Parsons, et al., GCN Circ. 7742).
The BAT ground-calculated position is RA, Dec = 102.274, 50.741 deg which is
```
    RA(J2000)  =  06h 49m 05.8s
    Dec(J2000) = +50d 44' 28.5"
```
with an uncertainty of 2.4 arcmin, (radius, sys+stat, 90% containment). The partial coding was 50%.
The mask-weighted lightcurve shows a single, FRED-like peak rising quickly to its maximum at ~T+4.4 sec with a roughly exponential decay down to background at ~T+60 sec. T90 (15-350 keV) is 64.6 +- 27.2 sec (estimated error including systematics).
The time-averaged spectrum from T-0.9 to T+68.3 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.54 +- 0.33. The fluence in the 15-150 keV band is 5.6 +- 1.2 x 10^-07 erg/cm2. The 1-sec peak photon flux measured from T+3.88 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/311874/BA/
This burst satisfies Sakamoto/Ukwatta Swift-BAT possible high-z criteria (Ukwatta et al. arXiv:0802.3815).
```
1) PL photon index = 1.54 (PL photon index < 2)
2) 1-s peak photon flux = 0.627459 (1-s peak photon flux < 1.0 ph/cm2/s)
3) Light curve variance = 6.818773e-05 (Variance < 0.0001)
4) T90/(Peak photon flux) = 103.0 (T90/(Peak photon flux) > 100)
```
Based on a limited sample of bursts, these criteria yield an 85% chance it has a redshift greater than 3.5. As noted in the initial Swift circular (Parsons, et al., GCN Circ. 7742), the observed X-ray absorption implies that the burst is most likely at z<4.8.
1409.5791 from 23 Sep 14
E. R. Stanway et al.: GRB 080517: A local, low luminosity GRB in a dusty galaxy at z=0.09
We present an analysis of the photometry and spectroscopy of the host galaxy of Swift-detected GRB 080517. From our optical spectroscopy, we identify a redshift of z = 0.089 +/- 0.003, based on strong emission lines, making this a rare example of a very local, low luminosity, long gamma ray burst. The galaxy is detected in the radio with a flux density of S(4.8GHz) =0.22 +/- 0.04mJy - one of relatively few known GRB hosts with a securely measured radio flux. Both optical emission lines and a strong detection at 22 um suggest that the host galaxy is forming stars rapidly, with an inferred star formation rate ~16 Msun/yr and a high dust obscuration (E(B-V )>1, based on sight-lines to the nebular emission regions). The presence of a companion galaxy within a projected distance of 25 kpc, and almost identical in redshift, suggests that star formation may have been triggered by galaxy-galaxy interaction. However, fitting of the remarkably flat spectral energy distribution from the ultraviolet through to the infrared suggests that an older, 500Myr post-starburst stellar population is present along with the ongoing star formation. We suggest that that the host galaxy of GRB 080517 provides a valuable local exemplar of the stellar populations producing dusty, optically-faint bursts.
1411.7389 from 1 Dec 14
E. R. Stanway et al.: A Detection of Molecular Gas Emission in the Host Galaxy of GRB 080517
We have observed the host galaxy of the low redshift, low luminosity GRB 080517 at 105.8 GHz using the IRAM Plateau de Bure interferometer. We detect an emission line with integrated flux S.delta{nu} = 0.39 +/- 0.05 Jy km/s - consistent both spatially and in velocity with identification as the J=1-0 rotational transition of carbon monoxide (CO) at the host galaxy redshift. This represents only the third long GRB host galaxy with molecular gas detected in emission. The inferred molecular gas mass, M_H2 ~ 6.3 x 10^8 M_sun, implies a gas consumption timescale of ~40 Myr if star formation continues at its current rate. Similar short timescales appear characteristic of the long GRB population with CO observations to date, suggesting that the gamma-ray burst in these sources occurs towards the end of their star formation episode.

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Jochen Greiner, last update: 01-Dec-2014 [Disclaimer]