[vsnet-grb 470007] GCN/SWIFT_FOM_OBSERVE

Bacodine vxw at capella2.gsfc.nasa.gov
Sat Jan 2 09:18:06 JST 2021


TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 02 Jan 21 00:18:05 UT
NOTICE_TYPE:     Swift-FOM Will_Observe
TRIGGER_NUM:     1015615,   Seg_Num: 0
GRB_RA:          234.703d {+15h 38m 49s} (J2000),
                 235.922d {+15h 43m 41s} (current),
                 231.901d {+15h 27m 36s} (1950)
GRB_DEC:         -84.189d {-84d 11' 18"} (J2000),
                 -84.255d {-84d 15' 17"} (current),
                 -84.022d {-84d 01' 18"} (1950)
GRB_DATE:        19216 TJD;     2 DOY;   21/01/02
GRB_TIME:        1032.62 SOD {00:17:12.62} UT
TRIGGER_INDEX:   155
RATE_SIGNIF:     30.06 [sigma]
IMAGE_SIGNIF:    6.50 [sigma]
FLAGS:           0x3
MERIT:           100.00
SUN_POSTN:       282.85d {+18h 51m 23s}  -22.91d {-22d 54' 37"}
SUN_DIST:         63.24 [deg]   Sun_angle= 3.1 [hr] (West of Sun)
MOON_POSTN:      139.92d {+09h 19m 40s}  +20.16d {+20d 09' 28"}
MOON_DIST:       110.65 [deg]
MOON_ILLUM:      91 [%]
GAL_COORDS:      307.13,-22.74 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      262.93,-61.63 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT Figure-of-Merit decision.  
COMMENTS:        This was of sufficient merit to become the new Automated Target;  
COMMENTS:        but if the Current PPT has a greater merit, then we will not request a slew.  
COMMENTS:        FOM will request the s/c to slew.  
COMMENTS:        The S/C has yet to make its decision about safe to slew or not.  
COMMENTS:        This does not match any source in the ground catalog.  
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 is a GRB.  
COMMENTS:        This trigger occurred during a high background rate interval.  
COMMENTS:        Since the IMAGE_SIGNIF is less than 7 sigma, this is a questionable detection.  
COMMENTS:        This trigger occurred at longitude,latitude = 276.64,-16.46 [deg].  



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