TDRSS lightcurve for Trigger=518731

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 27 Mar 12 03:06:10 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     518731,   Seg_Num: 0
GRB_RA:          246.828d {+16h 27m 19s} (J2000),
                 247.021d {+16h 28m 05s} (current),
                 246.044d {+16h 24m 11s} (1950)
GRB_DEC:         -29.415d {-29d 24' 54"} (J2000),
                 -29.442d {-29d 26' 30"} (current),
                 -29.304d {-29d 18' 13"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       6922 [cnts]    Image_Peak=250 [image_cnts]
TRIGGER_DUR:     2.048 [sec] 
TRIGGER_INDEX:   271     E_range: 50-350 keV
BKG_INTEN:       69757 [cnts]
BKG_TIME:        10479.96 SOD {02:54:39.96} UT
BKG_DUR:         24 [sec]
GRB_DATE:        16013 TJD;    87 DOY;   12/03/27
GRB_TIME:        10516.63 SOD {02:55:16.63} UT
GRB_PHI:          76.19 [deg]
GRB_THETA:        17.09 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     8.54 [sigma]
IMAGE_SIGNIF:    8.58 [sigma]
MERIT_PARAMS:     +1  +0  +0  +1  +3  -1  +0  +1 +45  +0 
SUN_POSTN:         6.29d {+00h 25m 11s}   +2.72d {+02d 43' 14"}
SUN_DIST:        116.66 [deg]   Sun_angle= 8.0 [hr] (West of Sun)
MOON_POSTN:       53.65d {+03h 34m 37s}  +20.15d {+20d 08' 59"}
MOON_DIST:       164.74 [deg]
MOON_ILLUM:      17 [%]
GAL_COORDS:      349.34, 13.42 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      249.77, -7.59 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Coordinates.  
COMMENTS:        This Notice was delayed by more than 60 sec past the end of the trigger integration interval;  
COMMENTS:        probably due to it occurring during a Malindi downlink session.  
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 = 11.89,3.73 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 27 Mar 12 03:18:40 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     518731,   Seg_Num: 0
GRB_RA:          246.828d {+16h 27m 19s} (J2000),
                 247.021d {+16h 28m 05s} (current),
                 246.044d {+16h 24m 11s} (1950)
GRB_DEC:         -29.415d {-29d 24' 54"} (J2000),
                 -29.442d {-29d 26' 30"} (current),
                 -29.304d {-29d 18' 13"} (1950)
GRB_DATE:        16013 TJD;    87 DOY;   12/03/27
GRB_TIME:        10516.63 SOD {02:55:16.63} UT
TRIGGER_INDEX:   271
GRB_PHI:          76.19 [deg]
GRB_THETA:        17.09 [deg]
DELTA_TIME:      12.00 [sec]
TRIGGER_DUR:     2.048 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     8.54 [sigma]
IMAGE_SIGNIF:    8.58 [sigma]
LC_URL:          sw00518731000msb.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:
Mon Mar 26 23:19:23 EDT 2012