TDRSS lightcurve for Trigger=515976

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 24 Feb 12 04:40:40 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     515976,   Seg_Num: 0
GRB_RA:           40.975d {+02h 43m 54s} (J2000),
                  41.117d {+02h 44m 28s} (current),
                  40.393d {+02h 41m 34s} (1950)
GRB_DEC:         -17.793d {-17d 47' 32"} (J2000),
                 -17.742d {-17d 44' 29"} (current),
                 -18.004d {-18d 00' 12"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       19296 [cnts]    Image_Peak=313 [image_cnts]
TRIGGER_DUR:     4.096 [sec] 
TRIGGER_INDEX:   291     E_range: 15-50 keV
BKG_INTEN:       178932 [cnts]
BKG_TIME:        16736.07 SOD {04:38:56.07} UT
BKG_DUR:         40 [sec]
GRB_DATE:        15981 TJD;    55 DOY;   12/02/24
GRB_TIME:        16796.49 SOD {04:39:56.49} UT
GRB_PHI:         -113.57 [deg]
GRB_THETA:        35.55 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     9.84 [sigma]
IMAGE_SIGNIF:    7.80 [sigma]
MERIT_PARAMS:     +1  +0  +0  +2  +1  -2  +0  +0 -46  +0 
SUN_POSTN:       336.81d {+22h 27m 14s}   -9.69d {-09d 41' 15"}
SUN_DIST:         62.72 [deg]   Sun_angle= -4.3 [hr] (East of Sun)
MOON_POSTN:      359.01d {+23h 56m 02s}   +4.61d {+04d 36' 52"}
MOON_DIST:        47.17 [deg]
MOON_ILLUM:      5 [%]
GAL_COORDS:      199.04,-62.47 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       32.12,-31.92 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Coordinates.  
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 does not match any source in the ground catalog.  
COMMENTS:        This is a GRB.  
COMMENTS:        This trigger occurred at longitude,latitude = 171.24,19.78 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 24 Feb 12 04:57:46 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     515976,   Seg_Num: 0
GRB_RA:           40.975d {+02h 43m 54s} (J2000),
                  41.117d {+02h 44m 28s} (current),
                  40.393d {+02h 41m 34s} (1950)
GRB_DEC:         -17.793d {-17d 47' 32"} (J2000),
                 -17.742d {-17d 44' 29"} (current),
                 -18.004d {-18d 00' 12"} (1950)
GRB_DATE:        15981 TJD;    55 DOY;   12/02/24
GRB_TIME:        16796.49 SOD {04:39:56.49} UT
TRIGGER_INDEX:   291
GRB_PHI:         -113.57 [deg]
GRB_THETA:        35.55 [deg]
DELTA_TIME:      38.00 [sec]
TRIGGER_DUR:     4.096 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     9.84 [sigma]
IMAGE_SIGNIF:    7.80 [sigma]
LC_URL:          sw00515976000msb.lc

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

Extended TDRSS light curve and spacecraft attitude plot(s)

Extended TDRSS lc No.1

Extended TDRSS lc No.2

Extended TDRSS lc No.3

Extended TDRSS lc No.4

Plot creation:
Thu Feb 23 23:58:03 EST 2012