TDRSS lightcurve for Trigger=157253

Notes:

• 1) None of the TDRSS light curves are background subtracted.

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 27 Sep 05 07:04:14 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     157253,   Seg_Num: 0
GRB_RA:          261.298d {+17h 25m 12s} (J2000),
                 261.395d {+17h 25m 35s} (current),
                 260.456d {+17h 21m 49s} (1950)
GRB_DEC:         -36.313d {-36d 18' 46"} (J2000),
                 -36.318d {-36d 19' 03"} (current),
                 -36.269d {-36d 16' 07"} (1950)
GRB_ERROR:       4.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=1350 [image_cnts]
TRIGGER_DUR:     64.000 [sec] 
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:        13640 TJD;   270 DOY;   05/09/27
GRB_TIME:        25376.24 SOD {07:02:56.24} UT
GRB_PHI:         -147.60 [deg]
GRB_THETA:        12.19 [deg]
SOLN_STATUS:     0x19D
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    5.63 [sigma]
MERIT_PARAMS:     +0  +0 +100  +6  +1  -5  +0  +1 -19  +1 
SUN_POSTN:       183.93d {+12h 15m 42s}   -1.70d {-01d 41' 59"}
SUN_DIST:         78.91 [deg]
MOON_POSTN:      119.74d {+07h 58m 58s}  +25.92d {+25d 54' 54"}
MOON_DIST:       145.81 [deg]
MOON_ILLUM:      31 [%]
GAL_COORDS:      351.47, -0.37 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      262.81,-13.09 [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: IGR17252-3616,   delta=0.040 [deg].  
COMMENTS:        This is not a GRB.  
COMMENTS:        Since the IMAGE_SIGNIF is less than 7 sigma, this is a questionable detection.  
COMMENTS:        This is an interesting source.  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 27 Sep 05 07:06:45 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     157253,   Seg_Num: 0
GRB_RA:          261.298d {+17h 25m 12s} (J2000),
                 261.395d {+17h 25m 35s} (current),
                 260.456d {+17h 21m 49s} (1950)
GRB_DEC:         -36.313d {-36d 18' 46"} (J2000),
                 -36.318d {-36d 19' 03"} (current),
                 -36.269d {-36d 16' 07"} (1950)
GRB_DATE:        13640 TJD;   270 DOY;   05/09/27
GRB_TIME:        25376.24 SOD {07:02:56.24} UT
TRIGGER_INDEX:   20000
GRB_PHI:         -147.60 [deg]
GRB_THETA:        12.19 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     64.000 [sec] 
LC_URL:          sw00157253000msb.lc
SUN_POSTN:       183.93d {+12h 15m 42s}   -1.70d {-01d 41' 59"}
SUN_DIST:         78.91 [deg]
MOON_POSTN:      119.74d {+07h 58m 58s}  +25.92d {+25d 54' 54"}

Initial TDRSS lightcurve and spacecraft attitude plot

TDRSS lightcurve from T0-30 to T0+50 (zoom in)

TDRSS light curve from T0-1 to T0+2 (More zoom in)

1.6s binned TDRSS light curve

Plot creation:
Tue Sep 27 03:08:07 EDT 2005