[vsnet-grb 473662] GCN/SWIFT_XRT_IMAGE

Bacodine vxw at capella2.gsfc.nasa.gov
Mon Feb 8 06:53:59 JST 2021


TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 07 Feb 21 21:53:58 UT
NOTICE_TYPE:     Swift-XRT Image
TRIGGER_NUM:     1031297,   Seg_Num: 0
GRB_RA:          270.6356d {+18h 02m 32.5s} (J2000),
                 270.7462d {+18h 02m 59.0s} (current),
                 270.3738d {+18h 01m 29.7s} (1950)
GRB_DEC:         +53.6836d {+53d 41' 00.9"} (J2000),
                 +53.6850d {+53d 41' 06.0"} (current),
                 +53.6811d {+53d 40' 52.1"} (1950)
GRB_ERROR:       4.7 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       227 [cnts]
IMG_START_DATE:  19252 TJD;    38 DOY;   21/02/07
IMG_START_TIME:  78802.03 SOD {21:53:22.03} UT,   73.9 [sec] since BAT Trigger Time
CENTROID_X:      295.55,  raw= 296  [pixels]
CENTROID_Y:      321.38,  raw= 321  [pixels]
ROLL:            130.46 [deg]
GAIN:            4
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   54.89
GRB_POS_XRT_Z:   -27.91
IMAGE_URL:       sw01031297000msxps_rw.img
SUN_POSTN:       321.77d {+21h 27m 06s}  -15.02d {-15d 00' 54"}
SUN_DIST:         81.31 [deg]   Sun_angle= 3.4 [hr] (West of Sun)
MOON_POSTN:      270.67d {+18h 02m 41s}  -24.62d {-24d 36' 57"}
MOON_DIST:        78.30 [deg]
MOON_ILLUM:      17 [%]
GAL_COORDS:       81.68, 28.62 [deg] galactic lon,lat of the burst
ECL_COORDS:      271.69, 77.12 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Image.  
COMMENTS:        The object found at this position is either a very bright burst or a cosmic ray hit.  
COMMENTS:        Examine the XRT Image to differentiate (CRs are much more compact); see examples at:  
COMMENTS:        http://www.swift.psu.edu/xrt/XRT_Postage_Stamp_Image_Photo_Gallery.htm .  



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