[vsnet-grb 377078] GCN/SWIFT_FOM_OBSERVE

Bacodine vxw at capella2.gsfc.nasa.gov
Sat Aug 18 05:59:53 JST 2018


TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 17 Aug 18 20:59:53 UT
NOTICE_TYPE:     Swift-FOM Will_NOT_Observe
TRIGGER_NUM:     853790,   Seg_Num: 0
GRB_RA:          192.885d {+12h 51m 32s} (J2000),
                 193.112d {+12h 52m 27s} (current),
                 192.274d {+12h 49m 06s} (1950)
GRB_DEC:         +25.921d {+25d 55' 15"} (J2000),
                 +25.820d {+25d 49' 11"} (current),
                 +26.192d {+26d 11' 33"} (1950)
GRB_DATE:        18347 TJD;   229 DOY;   18/08/17
GRB_TIME:        75498.55 SOD {20:58:18.55} UT
TRIGGER_INDEX:   20000
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    6.12 [sigma]
FLAGS:           0x1
MERIT:           -9899.99
SUN_POSTN:       147.19d {+09h 48m 45s}  +13.22d {+13d 13' 08"}
SUN_DIST:         44.83 [deg]   Sun_angle= -3.1 [hr] (East of Sun)
MOON_POSTN:      228.81d {+15h 15m 15s}  -12.73d {-12d 43' 52"}
MOON_DIST:        51.90 [deg]
MOON_ILLUM:      46 [%]
GAL_COORDS:      304.01, 88.79 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      180.66, 28.74 [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:        This matches a source in the ground catalog: NGC4747,   delta=0.152 [deg].  
COMMENTS:           
COMMENTS:        The next comments were copied from the BAT_POS Notice:  
COMMENTS:        This is an image trigger.  (The RATE_SIGNIF is undefined.)  
COMMENTS:        A point_source was found.  
COMMENTS:        This matches a source in the on-board catalog.  
COMMENTS:        This is not a GRB.  
COMMENTS:        This is an interesting source.  
COMMENTS:           
COMMENTS:        The IMAGE_SIGNIF is VERY LOW, this is very likely not real.  
COMMENTS:        This trigger occurred at longitude,latitude = 288.47,0.44 [deg].  



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