TDRSS lightcurve for Trigger=554635

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 27 Apr 13 13:20:59 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     554635,   Seg_Num: 0
GRB_RA:          314.891d {+20h 59m 34s} (J2000),
                 315.083d {+21h 00m 20s} (current),
                 314.168d {+20h 56m 40s} (1950)
GRB_DEC:         -22.530d {-22d 31' 49"} (J2000),
                 -22.478d {-22d 28' 40"} (current),
                 -22.726d {-22d 43' 32"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       4411 [cnts]    Image_Peak=153 [image_cnts]
TRIGGER_DUR:     1.024 [sec] 
TRIGGER_INDEX:   139     E_range: 15-50 keV
BKG_INTEN:       29280 [cnts]
BKG_TIME:        48029.51 SOD {13:20:29.51} UT
BKG_DUR:         8 [sec]
GRB_DATE:        16409 TJD;   117 DOY;   13/04/27
GRB_TIME:        48041.79 SOD {13:20:41.79} UT
GRB_PHI:         -70.91 [deg]
GRB_THETA:        37.52 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     12.16 [sigma]
IMAGE_SIGNIF:    8.70 [sigma]
MERIT_PARAMS:     +1  +0  +0  +0  +1  -1  +0  +0  -6  +0 
SUN_POSTN:        35.09d {+02h 20m 22s}  +13.99d {+13d 59' 39"}
SUN_DIST:         86.38 [deg]   Sun_angle= 5.3 [hr] (West of Sun)
MOON_POSTN:      239.26d {+15h 57m 03s}  -19.21d {-19d 12' 25"}
MOON_DIST:        70.15 [deg]
MOON_ILLUM:      96 [%]
GAL_COORDS:       24.39,-37.64 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      310.89, -5.24 [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 = 240.84,20.36 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 27 Apr 13 13:45:09 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     554635,   Seg_Num: 0
GRB_RA:          314.891d {+20h 59m 34s} (J2000),
                 315.083d {+21h 00m 20s} (current),
                 314.168d {+20h 56m 40s} (1950)
GRB_DEC:         -22.530d {-22d 31' 49"} (J2000),
                 -22.478d {-22d 28' 40"} (current),
                 -22.726d {-22d 43' 32"} (1950)
GRB_DATE:        16409 TJD;   117 DOY;   13/04/27
GRB_TIME:        48041.79 SOD {13:20:41.79} UT
TRIGGER_INDEX:   139
GRB_PHI:         -70.91 [deg]
GRB_THETA:        37.52 [deg]
DELTA_TIME:      51.00 [sec]
TRIGGER_DUR:     1.024 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     12.16 [sigma]
IMAGE_SIGNIF:    8.70 [sigma]
LC_URL:          sw00554635000msb.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

Plot creation:
Sat Apr 27 09:45:24 EDT 2013