[vsnet-grb 44116] GCN/SWIFT_BAT_POSITION_RETRACTION

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 04 Apr 07 02:51:04 UT
NOTICE_TYPE:     Swift-BAT GRB Position RETRACTION
TRIGGER_NUM:     273855,   Seg_Num: 0
GRB_RA:          245.147d {+16h 20m 35s} (J2000),
                 245.286d {+16h 21m 09s} (current),
                 244.190d {+16h 16m 46s} (1950)
GRB_DEC:         -51.579d {-51d 34' 43"} (J2000),
                 -51.596d {-51d 35' 44"} (current),
                 -51.460d {-51d 27' 35"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=5303 [image_cnts]
TRIGGER_DUR:     320.000 [sec]   (=5.3 [min])
TRIGGER_INDEX:   20000     E_range: 15-50 keV
BKG_INTEN:       0 [cnts]
BKG_TIME:        0.00 SOD {00:00:00.00} UT
BKG_DUR:         0 [sec]
GRB_DATE:        14194 TJD;    94 DOY;   07/04/04
GRB_TIME:        7934.13 SOD {02:12:14.13} UT
GRB_PHI:         171.44 [deg]
GRB_THETA:        17.04 [deg]
SOLN_STATUS:     0x1BD
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    5.86 [sigma]
MERIT_PARAMS:     +0  +0 +100  +6  +1  -5  +0  +1 +45  +1 
SUN_POSTN:        12.85d {+00h 51m 25s}   +5.51d {+05d 30' 30"}
SUN_DIST:        116.89 [deg]   Sun_angle= 8.5 [hr] (West of Sun)
MOON_POSTN:      205.71d {+13h 42m 51s}  -14.49d {-14d 29' 36"}
MOON_DIST:        48.72 [deg]
MOON_ILLUM:      98 [%]
GAL_COORDS:      332.38, -1.08 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      252.51,-29.64 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Coordinates.  
COMMENTS:        This is an image trigger.  (The RATE_SIGNIF & BKG_{INTEN, TIME, DUR} are undefined.)  
COMMENTS:        A point_source was found.  
COMMENTS:        This matches a source in the on-board catalog.  
COMMENTS:        This matches a source in the ground catalog: IGR16207-5129,   delta=0.098 [deg].  
COMMENTS:        This is not a GRB.  
COMMENTS:        This is an interesting source.  
COMMENTS:        Since the IMAGE_SIGNIF is less than 7 sigma, this is a questionable detection.  
COMMENTS:        This is a RETRACTION of a previous notice that identified this as a GRB -- it is NOT a GRB.  
COMMENTS:        This Notice was ground-reprocessed from flight-data.  
COMMENTS:        SWIFT-BAT GRB Coordinates.  
COMMENTS:          
COMMENTS:        This was a peak in a 5-minute image trigger  
COMMENTS:        that was close enough to a known source (IGR16207-5129)  
COMMENTS:        to trigger a catalog match in the onboard software.  
COMMENTS:        However, its low significance (5.86 sigma) and its distance  
COMMENTS:        from the catalogued source (6 arcminutes) strongly  
COMMENTS:        it was merely a statistical fluctuation.  
COMMENTS: