[vsnet-grb 372597] GCN/SWIFT_FOM_OBSERVE

Bacodine vxw at capella2.gsfc.nasa.gov
Sun Jul 8 22:35:40 JST 2018


TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 08 Jul 18 13:35:39 UT
NOTICE_TYPE:     Swift-FOM Will_Observe
TRIGGER_NUM:     846740,   Seg_Num: 0
GRB_RA:          198.919d {+13h 15m 41s} (J2000),
                 199.126d {+13h 16m 30s} (current),
                 198.359d {+13h 13m 26s} (1950)
GRB_DEC:         +41.897d {+41d 53' 50"} (J2000),
                 +41.800d {+41d 47' 59"} (current),
                 +42.161d {+42d 09' 40"} (1950)
GRB_DATE:        18307 TJD;   189 DOY;   18/07/08
GRB_TIME:        48818.76 SOD {13:33:38.76} UT
TRIGGER_INDEX:   20000
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    5.93 [sigma]
FLAGS:           0x3
MERIT:           100.00
SUN_POSTN:       107.73d {+07h 10m 56s}  +22.44d {+22d 26' 07"}
SUN_DIST:         76.25 [deg]   Sun_angle= -6.1 [hr] (East of Sun)
MOON_POSTN:       42.94d {+02h 51m 47s}  +11.03d {+11d 01' 35"}
MOON_DIST:       122.81 [deg]
MOON_ILLUM:      27 [%]
GAL_COORDS:      105.92, 74.42 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      176.41, 45.13 [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 matches a source in the ground catalog: NGC5055,   delta=0.135 [deg].  
COMMENTS:        The position is inside the galaxy NGC5055 (of total mag=8.60 and dia=12.30 arcmin).  
COMMENTS:        There is a 0.03% probability that this would happen by chance coincidence.  
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 = 103.91,-20.09 [deg].  



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