Gamma-ray Burst 180514A

(All information courtesy of the instrument teams.)

Previous IAU Circulars

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Results of Observations

GCN/BACODINE POSITION NOTICE


TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 14 May 18 13:26:07 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     832368,   Seg_Num: 0 
GRB_RA:          197.401d {+13h 09m 36s} (J2000),
                 197.613d {+13h 10m 27s} (current),
                 196.822d {+13h 07m 17s} (1950)
GRB_DEC:         +36.969d {+36d 58' 10"} (J2000),
                 +36.872d {+36d 52' 19"} (current),
                 +37.236d {+37d 14' 08"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       5541 [cnts]    Image_Peak=230 [image_cnts]
TRIGGER_DUR:     2.048 [sec]   
TRIGGER_INDEX:   473     E_range: 25-100 keV
BKG_INTEN:       53411 [cnts]
BKG_TIME:        48299.05 SOD {13:24:59.05} UT
BKG_DUR:         24 [sec]      
GRB_DATE:        18252 TJD;   134 DOY;   18/05/14
GRB_TIME:        48333.49 SOD {13:25:33.49} UT
GRB_PHI:          47.02 [deg]
GRB_THETA:        15.65 [deg]
SOLN_STATUS:     0x10103
RATE_SIGNIF:     10.39 [sigma]
IMAGE_SIGNIF:    7.83 [sigma]
MERIT_PARAMS:     +1  +0  +0  +1  +2  -2  +0  +0 +43  +0
SUN_POSTN:        51.33d {+03h 25m 19s}  +18.70d {+18d 41' 54"}
SUN_DIST:        115.97 [deg]   Sun_angle= -9.8 [hr] (East of Sun)
MOON_POSTN:       40.43d {+02h 41m 44s}  +10.47d {+10d 28' 03"}
MOON_DIST:       128.03 [deg]
MOON_ILLUM:      1 [%]
GAL_COORDS:      102.75, 79.44 [deg] galactic lon,lat of the burst (or transient)      
ECL_COORDS:      178.50, 40.30 [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 position matches one of the nearby galaxy sources in the on-board catalog!
COMMENTS:        This does not match any source in the on-board catalog.
COMMENTS:        This matches a source in the ground catalog: NGC5005, delta=0.278 [deg].
COMMENTS:        This is a GRB in nearby galaxy or it is noise.
COMMENTS:        This trigger occurred at longitude,latitude = 77.75,2.25 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 14 May 18 13:27:29 UT
NOTICE_TYPE:     Swift-XRT Image
TRIGGER_NUM:     832368,   Seg_Num: 0
GRB_RA:          197.3700d {+13h 09m 28.8s} (J2000),
                 197.5822d {+13h 10m 19.7s} (current),
                 196.7913d {+13h 07m 09.9s} (1950)
GRB_DEC:         +36.9725d {+36d 58' 20.9"} (J2000),
                 +36.8750d {+36d 52' 29.8"} (current),
                 +37.2386d {+37d 14' 19.0"} (1950)
GRB_ERROR:       5.0 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       70 [cnts]
IMG_START_DATE:  18252 TJD;   134 DOY;   18/05/14
IMG_START_TIME:  48411.34 SOD {13:26:51.34} UT,   77.8 [sec] since BAT Trigger Time
CENTROID_X:      303.59,  raw= 304  [pixels]
CENTROID_Y:      318.35,  raw= 318  [pixels]
ROLL:            324.05 [deg]
GAIN:            1
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   47.04
GRB_POS_XRT_Z:   -6.61
IMAGE_URL:       sw00832368000msxps_rw.img
SUN_POSTN:        51.33d {+03h 25m 19s}  +18.70d {+18d 41' 54"}
SUN_DIST:        115.96 [deg]   Sun_angle= -9.8 [hr] (East of Sun)
MOON_POSTN:       40.45d {+02h 41m 47s}  +10.47d {+10d 28' 18"}
MOON_DIST:       128.01 [deg]
MOON_ILLUM:      1 [%]
GAL_COORDS:      102.88, 79.44 [deg] galactic lon,lat of the burst
ECL_COORDS:      178.47, 40.29 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 14 May 18 13:27:34 UT
NOTICE_TYPE:     Swift-XRT Processed Image
TRIGGER_NUM:     832368,   Seg_Num: 0
GRB_RA:          197.3700d {+13h 09m 28.8s} (J2000),
                 197.5822d {+13h 10m 19.7s} (current),
                 196.7913d {+13h 07m 09.9s} (1950)
GRB_DEC:         +36.9725d {+36d 58' 20.9"} (J2000),
                 +36.8750d {+36d 52' 29.8"} (current),
                 +37.2386d {+37d 14' 19.0"} (1950)
GRB_ERROR:       5.0 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       70 [cnts]
IMG_START_DATE:  18252 TJD;   134 DOY;   18/05/14
IMG_START_TIME:  48411.34 SOD {13:26:51.34} UT,   77.8 [sec] since BAT Trigger Time
CENTROID_X:      303.59,  raw= 304  [pixels]
CENTROID_Y:      318.35,  raw= 318  [pixels]
ROLL:            324.05 [deg]
GAIN:            1
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   47.04
GRB_POS_XRT_Z:   -6.61
IMAGE_URL:       sw00832368000msxps_rw.img
SUN_POSTN:        51.33d {+03h 25m 19s}  +18.70d {+18d 41' 55"}
SUN_DIST:        115.96 [deg]   Sun_angle= -9.8 [hr] (East of Sun)
MOON_POSTN:       40.45d {+02h 41m 48s}  +10.47d {+10d 28' 19"}
MOON_DIST:       128.01 [deg]
MOON_ILLUM:      1 [%]
GAL_COORDS:      102.88, 79.44 [deg] galactic lon,lat of the burst
ECL_COORDS:      178.47, 40.29 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Processed Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 14 May 18 13:27:18 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     832368,   Seg_Num: 0
GRB_RA:          197.3700d {+13h 09m 28.80s} (J2000),
                 197.5822d {+13h 10m 19.73s} (current),
                 196.7913d {+13h 07m 09.92s} (1950)
GRB_DEC:         +36.9725d {+36d 58' 20.9"} (J2000),
                 +36.8750d {+36d 52' 29.8"} (current),
                 +37.2386d {+37d 14' 19.0"} (1950)
GRB_ERROR:       5.2 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.69e-09 [erg/cm2/sec]
GRB_SIGNIF:      8.36 [sigma]
IMG_START_DATE:  18252 TJD;   134 DOY;   18/05/14
IMG_START_TIME:  48411.34 SOD {13:26:51.34} UT,   77.8 [sec] since BAT Trigger Time
TAM[0-3]:        327.67 237.25 261.75 243.57
AMPLIFIER:       2
WAVEFORM:        134
SUN_POSTN:        51.33d {+03h 25m 19s}  +18.70d {+18d 41' 54"}
SUN_DIST:        115.96 [deg]   Sun_angle= -9.8 [hr] (East of Sun)
MOON_POSTN:       40.45d {+02h 41m 47s}  +10.47d {+10d 28' 16"}
MOON_DIST:       128.01 [deg]
MOON_ILLUM:      1 [%]
GAL_COORDS:      102.88, 79.44 [deg] galactic lon,lat of the burst
ECL_COORDS:      178.47, 40.29 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        The XRT position for this trigger matched a source in the BAT ground catalog.  
COMMENTS:        The XRT position is 1.49 arcmin from the BAT position.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 14 May 18 13:29:50 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     832368,   Seg_Num: 0
POINT_RA:        197.386d {+13h 09m 33s} (J2000)
POINT_DEC:       +36.979d {+36d 58' 43"} (J2000)
POINT_ROLL:      324.050d
IMG_START_DATE:  18252 TJD;   134 DOY;   18/05/14
IMG_START_TIME:  48420.39 SOD {13:27:00.39} UT,   86.9 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        1.532
N_STARS:         27
X_OFFSET:        392 [pixels]
Y_OFFSET:        648 [pixels]
X_MAX:           1351 [pixels]
Y_MAX:           1607 [pixels]
DET_THRESH:      10
PHOTO_THRESH:    5
SL_URL:          sw00832368000msufc0086.fits
SUN_POSTN:        51.33d {+03h 25m 19s}  +18.70d {+18d 41' 56"}
SUN_DIST:        115.96 [deg]   Sun_angle= -9.8 [hr] (East of Sun)
MOON_POSTN:       40.47d {+02h 41m 53s}  +10.48d {+10d 28' 43"}
MOON_DIST:       127.99 [deg]
MOON_ILLUM:      1 [%]
GAL_COORDS:      102.83, 79.43 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      178.48, 40.30 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 14 May 18 13:30:05 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     832368,   Seg_Num: 0
POINT_RA:        197.386d {+13h 09m 33s} (J2000)
POINT_DEC:       +36.979d {+36d 58' 43"} (J2000)
POINT_ROLL:      324.050d
IMG_START_DATE:  18252 TJD;   134 DOY;   18/05/14
IMG_START_TIME:  48420.39 SOD {13:27:00.39} UT,   86.9 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        1.532
N_STARS:         27
X_OFFSET:        392 [pixels]
Y_OFFSET:        648 [pixels]
X_MAX:           1351 [pixels]
Y_MAX:           1607 [pixels]
DET_THRESH:      10
PHOTO_THRESH:    5
SL_URL:          sw00832368000msufc0086.fits
SUN_POSTN:        51.33d {+03h 25m 19s}  +18.70d {+18d 41' 56"}
SUN_DIST:        115.96 [deg]   Sun_angle= -9.8 [hr] (East of Sun)
MOON_POSTN:       40.47d {+02h 41m 53s}  +10.48d {+10d 28' 46"}
MOON_DIST:       127.99 [deg]
MOON_ILLUM:      1 [%]
GAL_COORDS:      102.83, 79.43 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      178.48, 40.30 [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:     Mon 14 May 18 13:31:05 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     832368,   Seg_Num: 0
POINT_RA:        197.386d {+13h 09m 33s} (J2000)
POINT_DEC:       +36.979d {+36d 58' 43"} (J2000)
ROLL:            324.050d
IMG_START_DATE:  18252 TJD;   134 DOY;   18/05/14
IMG_START_TIME:  48420.39 SOD {13:27:00.39} UT,   86.9 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     547997241
X_OFFSET:        756 [pixels]
Y_OFFSET:        799 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       916
Y_GRB_POS:       959
BINNING_INDEX:   1
IM_URL:          sw00832368000msuni0107.fits
SUN_POSTN:        51.33d {+03h 25m 20s}  +18.70d {+18d 41' 57"}
SUN_DIST:        115.96 [deg]   Sun_angle= -9.8 [hr] (East of Sun)
MOON_POSTN:       40.48d {+02h 41m 56s}  +10.48d {+10d 28' 57"}
MOON_DIST:       127.98 [deg]
MOON_ILLUM:      1 [%]
GAL_COORDS:      102.83, 79.43 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      178.48, 40.30 [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:     Mon 14 May 18 13:31:16 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     832368,   Seg_Num: 0
POINT_RA:        197.386d {+13h 09m 33s} (J2000)
POINT_DEC:       +36.979d {+36d 58' 43"} (J2000)
ROLL:            324.050d
IMG_START_DATE:  18252 TJD;   134 DOY;   18/05/14
IMG_START_TIME:  48420.39 SOD {13:27:00.39} UT,   86.9 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     547997241
X_OFFSET:        756 [pixels]
Y_OFFSET:        799 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       916
Y_GRB_POS:       959
BINNING_INDEX:   1
IM_URL:          sw00832368000msuni0107.fits
SUN_POSTN:        51.33d {+03h 25m 20s}  +18.70d {+18d 41' 57"}
SUN_DIST:        115.96 [deg]   Sun_angle= -9.8 [hr] (East of Sun)
MOON_POSTN:       40.48d {+02h 41m 56s}  +10.48d {+10d 28' 59"}
MOON_DIST:       127.98 [deg]
MOON_ILLUM:      1 [%]
GAL_COORDS:      102.83, 79.43 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      178.48, 40.30 [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:     Mon 14 May 18 13:36:33 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     832368,   Seg_Num: 0
POINT_RA:        197.382d {+13h 09m 32s} (J2000)
POINT_DEC:       +36.979d {+36d 58' 46"} (J2000)
POINT_ROLL:      324.047d
IMG_START_DATE:  18252 TJD;   134 DOY;   18/05/14
IMG_START_TIME:  48632.49 SOD {13:30:32.49} UT,   299.0 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        0.430
N_STARS:         33
X_OFFSET:        436 [pixels]
Y_OFFSET:        479 [pixels]
X_MAX:           1395 [pixels]
Y_MAX:           1438 [pixels]
DET_THRESH:      6
PHOTO_THRESH:    2
SL_URL:          sw00832368000msufc0299.fits
SUN_POSTN:        51.34d {+03h 25m 20s}  +18.70d {+18d 41' 60"}
SUN_DIST:        115.95 [deg]   Sun_angle= -9.8 [hr] (East of Sun)
MOON_POSTN:       40.53d {+02h 42m 08s}  +10.50d {+10d 29' 56"}
MOON_DIST:       127.95 [deg]
MOON_ILLUM:      1 [%]
GAL_COORDS:      102.84, 79.43 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      178.47, 40.30 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 14 May 18 13:36:48 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     832368,   Seg_Num: 0
POINT_RA:        197.382d {+13h 09m 32s} (J2000)
POINT_DEC:       +36.979d {+36d 58' 46"} (J2000)
POINT_ROLL:      324.047d
IMG_START_DATE:  18252 TJD;   134 DOY;   18/05/14
IMG_START_TIME:  48632.49 SOD {13:30:32.49} UT,   299.0 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        0.430
N_STARS:         33
X_OFFSET:        436 [pixels]
Y_OFFSET:        479 [pixels]
X_MAX:           1395 [pixels]
Y_MAX:           1438 [pixels]
DET_THRESH:      6
PHOTO_THRESH:    2
SL_URL:          sw00832368000msufc0299.fits
SUN_POSTN:        51.34d {+03h 25m 20s}  +18.70d {+18d 42' 00"}
SUN_DIST:        115.95 [deg]   Sun_angle= -9.8 [hr] (East of Sun)
MOON_POSTN:       40.54d {+02h 42m 09s}  +10.50d {+10d 29' 59"}
MOON_DIST:       127.94 [deg]
MOON_ILLUM:      1 [%]
GAL_COORDS:      102.84, 79.43 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      178.47, 40.30 [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:     Mon 14 May 18 13:37:41 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     832368,   Seg_Num: 0
POINT_RA:        197.382d {+13h 09m 32s} (J2000)
POINT_DEC:       +36.979d {+36d 58' 46"} (J2000)
ROLL:            324.047d
IMG_START_DATE:  18252 TJD;   134 DOY;   18/05/14
IMG_START_TIME:  48632.49 SOD {13:30:32.49} UT,   299.0 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     547997453
X_OFFSET:        756 [pixels]
Y_OFFSET:        799 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       916
Y_GRB_POS:       959
BINNING_INDEX:   1
IM_URL:          sw00832368000msuni0320.fits
SUN_POSTN:        51.34d {+03h 25m 21s}  +18.70d {+18d 42' 01"}
SUN_DIST:        115.95 [deg]   Sun_angle= -9.8 [hr] (East of Sun)
MOON_POSTN:       40.54d {+02h 42m 11s}  +10.50d {+10d 30' 08"}
MOON_DIST:       127.94 [deg]
MOON_ILLUM:      1 [%]
GAL_COORDS:      102.84, 79.43 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      178.47, 40.30 [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:     Mon 14 May 18 13:37:49 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     832368,   Seg_Num: 0
POINT_RA:        197.382d {+13h 09m 32s} (J2000)
POINT_DEC:       +36.979d {+36d 58' 46"} (J2000)
ROLL:            324.047d
IMG_START_DATE:  18252 TJD;   134 DOY;   18/05/14
IMG_START_TIME:  48632.49 SOD {13:30:32.49} UT,   299.0 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     547997453
X_OFFSET:        756 [pixels]
Y_OFFSET:        799 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       916
Y_GRB_POS:       959
BINNING_INDEX:   1
IM_URL:          sw00832368000msuni0320.fits
SUN_POSTN:        51.34d {+03h 25m 21s}  +18.70d {+18d 42' 01"}
SUN_DIST:        115.95 [deg]   Sun_angle= -9.8 [hr] (East of Sun)
MOON_POSTN:       40.55d {+02h 42m 11s}  +10.50d {+10d 30' 10"}
MOON_DIST:       127.94 [deg]
MOON_ILLUM:      1 [%]
GAL_COORDS:      102.84, 79.43 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      178.47, 40.30 [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:     Mon 14 May 18 13:37:09 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     832368,   Seg_Num: 0
GRB_RA:          197.3712d {+13h 09m 29.08s} (J2000),
                 197.5834d {+13h 10m 20.02s} (current),
                 196.7925d {+13h 07m 10.20s} (1950)
GRB_DEC:         +36.9720d {+36d 58' 19.2"} (J2000),
                 +36.8745d {+36d 52' 28.1"} (current),
                 +37.2381d {+37d 14' 17.2"} (1950)
GRB_ERROR:       3.6 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  18252 TJD;   134 DOY;   18/05/14
IMG_START_TIME:  48523.00 SOD {13:28:43.00} UT,   189.5 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:        51.34d {+03h 25m 21s}  +18.70d {+18d 42' 00"}
SUN_DIST:        115.95 [deg]   Sun_angle= -9.7 [hr] (East of Sun)
MOON_POSTN:       40.54d {+02h 42m 09s}  +10.50d {+10d 30' 03"}
MOON_DIST:       127.94 [deg]
MOON_ILLUM:      1 [%]
GAL_COORDS:      102.87, 79.44 [deg] galactic lon,lat of the burst
ECL_COORDS:      178.47, 40.29 [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 Circular #22723
S. J. LaPorte (PSU), A. P. Beardmore (U Leicester), A. A. Breeveld (UCL-MSSL), D. N. Burrows (PSU), A. Deich (PSU), S. W. K Emery (UCL-MSSL), J.D. Gropp (PSU), A. Y. Lien (GSFC/UMBC), F. E. Marshall (NASA/GSFC), K. L. Page (U Leicester), B. Sbarufatti (PSU), M. H. Siegel (PSU) and A. Tohuvavohu (PSU) report on behalf of the Neil Gehrels Swift Observatory Team:
At 13:25:33 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 180514A (trigger=832368). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 197.401, +36.969 which is
```
   RA(J2000) = 13h 09m 36s
   Dec(J2000) = +36d 58' 10"
```
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 40 sec. The peak count rate was ~1300 counts/sec (15-350 keV), at ~5 sec after the trigger.
The XRT began observing the field at 13:26:51.3 UT, 77.8 seconds after the BAT trigger. Using promptly downlinked data we find a bright, uncatalogued X-ray source with an enhanced position: RA, Dec 197.3713, 36.9720 which is equivalent to:
```
   RA(J2000)  = 13h 09m 29.12s
   Dec(J2000) = +36d 58' 19.3"
```
with an uncertainty of 3.6 arcseconds (radius, 90% containment). This location is 86 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 1.18 x 10^20 cm^-2 (Willingale et al. 2013).
The initial flux in the 2.5 s image was 1.69e-09 erg cm^-2 s^-1 (0.2-10 keV).
UVOT took a finding chart exposure of 150 seconds with the White filter starting 86 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 0.01.
The first BAT Position notice identified this trigger as a transient from a known source because of proximity with the spiral galaxy NGC 5005. However, given the separation between the XRT position and NGC 5005 (~18 arcmin) and the look of the promptly downlinked BAT and XRT data we believe this is a GRB not associated with the foreground galaxy.
Burst Advocate for this burst is S. J. LaPorte (extragsam AT gmail.com). Please contact the BA by email if you require additional information regarding Swift followup of this burst. In extremely urgent cases, after trying the Burst Advocate, you can contact the Swift PI by phone (see Swift TOO web site for information: http://www.swift.psu.edu/too.html.)
GCN Circular #22725
M.R. Goad, J.P. Osborne, A.P. Beardmore and P.A. Evans (U. Leicester) report on behalf of the Swift-XRT team.
Using 1002 s of XRT Photon Counting mode data and 2 UVOT images for GRB 180514A, 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 = 197.37112, +36.97231 which is equivalent to:
```
RA (J2000): 13h 09m 29.07s
Dec (J2000): +36d 58' 20.3"
```
with an uncertainty of 2.4 arcsec (radius, 90% confidence).
This position may be improved as more data are received. The latest position can be viewed at http://www.swift.ac.uk/xrt_positions. Position enhancement is described by Goad et al. (2007, A&A, 476, 1401) and Evans et al. (2009, MNRAS, 397, 1177).
This circular was automatically generated, and is an official product of the Swift-XRT team.
GCN Circular #22726
A. Tohuvavohu (PSU), Z. Liu (NAOC / U. Leicester), J.P. Osborne (U. Leicester), K.L. Page (U. Leicester), V. D'Elia (ASDC), A. D'Ai (INAF-IASFPA), A. Melandri (INAF-OAB), S. J. LaPorte (PSU), J.A. Kennea (PSU) and S.J. LaPorte report on behalf of the Swift-XRT team:
We have analysed 7.0 ks of XRT data for GRB 180514A (LaPorte et al. GCN Circ. 22723), from 84 s to 18.0 ks after the BAT trigger. The data comprise 88 s in Windowed Timing (WT) mode with the remainder in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Goad et al. (GCN Circ. 22725).
The light curve can be modelled with a series of power-law decays. The initial decay index is alpha=2.4 (+0.5, -0.8). At T+135 s the decay steepens to an alpha of 4.9 (+1.0, -0.4) before breaking again at T+414 s to a final decay with index alpha=0.38 (+0.15, -0.17).
A spectrum formed from the WT mode data can be fitted with an absorbed power-law with a photon spectral index of 3.7 (+0.4, -0.3). The best-fitting absorption column is 2.9 (+0.7, -0.6) x 10^21 cm^-2, in excess of the Galactic value of 1.2 x 10^20 cm^-2 (Willingale et al. 2013). The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 2.1 x 10^-11 (9.6 x 10^-11) erg cm^-2 count^-1.
A summary of the WT-mode spectrum is thus:
```
Total column:	     2.9 (+0.7, -0.6) x 10^21 cm^-2
Galactic foreground: 1.2 x 10^20 cm^-2
Excess significance: 7.0 sigma
Photon index:	     3.7 (+0.4, -0.3)
```
If the light curve continues to decay with a power-law decay index of 0.38, the count rate at T+24 hours will be 0.011 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 2.3 x 10^-13 (1.1 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/00832368.
This circular is an official product of the Swift-XRT team.
GCN Circular #22727
H. A. Krimm (NSF/USRA), S. D. Barthelmy (GSFC), J. R. Cummings (CPI), S. J. LaPorte (PSU), A. Y. Lien (GSFC/UMBC), C. B. Markwardt (GSFC), D. M. Palmer (LANL), T. Sakamoto (AGU), M. Stamatikos (OSU), T. N. Ukwatta (LANL) (i.e. the Swift-BAT team):
Using the data set from T-239 to T+963 sec from the recent telemetry downlink, we report further analysis of BAT GRB 180514A (trigger #832368) (LaPorte et al., GCN Circ. 22723). The BAT ground-calculated position is RA, Dec = 197.382, 36.970 deg which is
```
  RA(J2000)  =  13h 09m 31.7s
  Dec(J2000) = +36d 58' 13.0"
```
with an uncertainty of 1.3 arcmin, (radius, sys+stat, 90% containment). The partial coding was 91%.
The mask-weighted light curve shows a weak pulse that starts at ~T-8 s, peaks at ~T0, and ends at ~T+55 s. T90 (15-350 keV) is 46.9 +- 14.5 sec (estimated error including systematics).
The time-averaged spectrum from T-8.33 to T+54.71 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.77 +- 0.14. The fluence in the 15-150 keV band is 1.0 +- 0.1 x 10^-6 erg/cm2. The 1-sec peak photon flux measured from T+0.23 sec in the 15-150 keV band is 0.7 +- 0.1 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/832368/BA/
GCN Circular #22728
B.Gompertz (U. Warwick), K.Ulaczyk (U. Warwick), M.Dyer (U. Sheffield),=20 E.Rol (Monash U.), K. Ackley (Monash U.), D.Steeghs (U. Warwick),=20 D.Galloway (Monash U.), G.Ramsay (Armagh O.),=A0V.Dhillon (U. Sheffield), P.O'Brien (U. Leicester), S.Poshyachinda (NARIT), D.Pollacco (U.=20 Warwick), E.Thrane (Monash U.)
report on behalf of the GOTO collaboration:
The Gravitational-wave Optical Transient Observer observed the field of=20 GRB 180514A (trigger=3D832368, LaPorte et al. GCN Circ. 22723) from Roque= =20 de los Muchachos Observatory beginning at 2018-05-14T21:09:12 UT, 7.73=20 hours since burst, in several wide-band filters.
In a combined L-band image (400-700nm passband), with a total exposure=20 time of 360s, we do not detect any optical source within the enhanced=20 XRT error circle (Goad et al., GCN Circ. 22725) down to a 5-sigma=20 limiting magnitude of V > 20.7=A0based on a comparison to APASS V-band=20 calibrators.
Further observations are planned.
GOTO is operated at the La Palma observing facilities of the University=20 of Warwick on behalf of a consortium including the University of=20 Warwick, Monash University, Armagh Observatory, the University of=20 Leicester, the University of Sheffield, the National Astronomical=20 Research Institute of Thailand (NARIT) and the Instituto de Astrofisica=20 de Canarias (IAC) https://goto-observatory.org/
GCN Circular #22729
A. de Ugarte Postigo (HETH/IAA-CSIC, DARK/NBI), D. A. Kann, L. Izzo, C. C. Thoene (all HETH/IAA-CSIC), and A. Sota (IAA-CSIC) report:
We have observed the field of GRB 180514A (LaPorte et al. GCN 22723) with the 1.5m telescope at the Sierra Nevada Observatory (Granada, Spain). Observations started at 20:50 UT (7.41 hr after the burst) and consisted of multiple 300 s exposures in the Ic-band.
No object is detected within the XRT error circle in the first combined 10 x 300 s exposure, which has been obtained at average time of 7.87 hr after the burst, down to a 3-sigma limit of Ic (AB) > 21.5 mag, as compared with SDSS DR14 field stars.
GCN Circular #22731
A. de Ugarte Postigo (HETH/IAA-CSIC, DARK/NBI), D. Malesani (DAWN/NBI and DARK/NBI), P. Montanes-Rodriguez (IAC), and P. Sorensen (NOT) report:
We observed the field of GRB 180514A (LaPorte et al. GCN 22723) with the 2.5 m Nordic Optical Telescope (NOT) equipped with AlFOSC. The observation consisted of 3x300s exposures in r-band and 5x200s in z-band. The integrations started at 23:22 UT, 9.95 hr after the burst.
No credible counterpart is detected in any of the two bands within the XRT error box. For the r-band image we derive a 3-sigma limit of r > 23.8 mag, calibrated with respect to SDSS field stars.
GCN Circular #22732
R. Itoh, K. L. Murata, Y. Tachibana, S. Harita, K. Morita, T. Ozawa, H. Mamiya, K. Shiraishi, Y. Yatsu, and N. Kawai (Tokyo Tech) report on behalf of the MITSuME collaboration:
We searched for the optical counterpart of GRB 180514A (LaPorte et al., GCN Circular #22723) with the optical three color (g', Rc, and Ic) CCD cameras attached to the MITSuME 50cm telescope of Akeno Observatory, Yamanashi, Japan.
The observation started on 2018-05-14 13:39:12 UT. We did not find any point source at the position of the XRT error circle in all three bands. We obtained following limits for the magnitudes.
```
T0+[min]    MID-UT      T-EXP[sec]    g'       Rc        Ic
-------------------------------------------------------------------------------------------------------
~13.6      14:18:59  4,200   >18.7   >19.2   >18.1
-------------------------------------------------------------------------------------------------------

T0+ : Elapsed time after the burst
T-EXP: Total Exposure time
```
We used UCAC-4 catalog for flux calibration.
GCN Circular #22733
A. A. Breeveld (UCL-MSSL) and S. J. LaPorte (PSU) report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 180514A 87 s after the BAT trigger (LaPorte et al., GCN Circ. 22723). No optical afterglow consistent with the enhanced XRT position (Goad et al. GCN Circ. 22725) 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            87          237          147         >20.8
u_FC               300          549          246         >20.2
white               87         7353          688         >22.8
v                 6129         6329          197         >20.1
b                 5513         7148          393         >20.7
u                  300         6943          639         >21.6
w1                5104         6739          393         >20.8
m2                6334         6533          197         >20.1
w2                5924         7540          374         >20.3
```
The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.01 in the direction of the burst (Schlegel et al. 1998).
GCN Circular #22735
A. Volnova (IKI), V. Rumyantsev (CrAO), A. Pozanenko (IKI), E. Mazaeva (IKI) report on behalf of larger GRB follow-up collaboration:
We observed the field of the GRB 180514A (LaPorte et al., GCN 22723) with ZTSH 2.6m telescope of CrAO observatory starting on May 14 (UT) 18:16:14. We took several images in filter R with exposures of 120 s. We detect one object within enhanced XRT (Goad et al., GCN 22725). The coordinates of the object are (J2000) 13 09 29.01 +36 58 19.5 with uncertainty of 0.3 arcsec in each coordinate. Preliminary photometry of the object in a combined image is following
```
UT start              t-T0    Filter  Exp.     OT      err    UL(3sigma)
                      (mid, days)       (s)

2018-05-14 19:07:44   0.23321 R       36*120   22.90   0.07   23.9
```
The photometry is based on nearby SDSS stars:
```
SDSS-DR9_id             R(Lupton)
J130934.98+365851.3	18.625	0.020
J130931.60+365838.3	18.933	0.023
J130931.36+365901.6	19.497	0.048
```
Based only on our observation we can not say about variability the object. However taking into account deep upper limit of NOT observation at 9.95 hrs (A. de Ugarte Postigo et al., GCN 22731) we can suggest that the object is the afterglow of GRB 180514A.
The finding chat can be found in http://grb.rssi.ru/GRB180514A/GRB180514A_ZTSh_fc.png
GCN Circular #22736
T. Horiuchi, H. Hanayama, M. Honma (IAO, NAOJ), R. Itoh, K. L. Murata, Y. Tachibana, S. Harita, K. Morita, T. Ozawa, H. Mamiya, K. Shiraishi, Y. Yatsu, and N. Kawai (Tokyo Tech) report on behalf of the MITSuME collaboration:
We searched for the optical counterpart of GRB 180514A (LaPorte et al., GCN Circular #22723, Volnova et al., GCN Circular #22735) with the optical three color (g', Rc, and Ic) CCD cameras attached to the Murikabushi 1m telescope of Ishigakijima Astronomical Observatory.
The observation started on 2018-05-14 13:46:55 UT. We did not find any point source at the position of the XRT error circle in all three bands. We obtained following limits for the magnitudes.
```
T0+[min]    MID-UT      T-EXP[sec]    g'       Rc        Ic
-------------------------------------------------------------------------------------------------------
~21.4      14:18:37  3,300   >19.6   >19.2   >17.2
-------------------------------------------------------------------------------------------------------

T0+ : Elapsed time after the burst
T-EXP: Total Exposure time
```
We used UCAC-4 catalog for flux calibration.

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Jochen Greiner, last update: 17-May-2018 [Disclaimer]