TDRSS lightcurve for Trigger=554135

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 21 Apr 13 21:02:34 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     554135,   Seg_Num: 0
GRB_RA:          235.706d {+15h 42m 49s} (J2000),
                 235.776d {+15h 43m 06s} (current),
                 235.441d {+15h 41m 46s} (1950)
GRB_DEC:         +58.498d {+58d 29' 51"} (J2000),
                 +58.456d {+58d 27' 21"} (current),
                 +58.655d {+58d 39' 18"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       2815 [cnts]    Image_Peak=132 [image_cnts]
TRIGGER_DUR:     1.024 [sec] 
TRIGGER_INDEX:   233     E_range: 25-100 keV
BKG_INTEN:       20572 [cnts]
BKG_TIME:        75717.53 SOD {21:01:57.53} UT
BKG_DUR:         8 [sec]
GRB_DATE:        16403 TJD;   111 DOY;   13/04/21
GRB_TIME:        75730.07 SOD {21:02:10.07} UT
GRB_PHI:         -27.12 [deg]
GRB_THETA:        26.50 [deg]
SOLN_STATUS:     0x83
RATE_SIGNIF:     5.38 [sigma]
IMAGE_SIGNIF:    6.74 [sigma]
MERIT_PARAMS:     +1  +0  +0  +0  +2  -3  +0  +0 +27  +0 
SUN_POSTN:        29.74d {+01h 58m 58s}  +12.14d {+12d 08' 15"}
SUN_DIST:        106.28 [deg]   Sun_angle= 10.3 [hr] (West of Sun)
MOON_POSTN:      160.39d {+10h 41m 35s}   +3.10d {+03d 05' 45"}
MOON_DIST:        79.75 [deg]
MOON_ILLUM:      81 [%]
GAL_COORDS:       91.62, 46.86 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      190.94, 72.55 [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:        Since the IMAGE_SIGNIF is less than 7 sigma, this is a questionable detection.  
COMMENTS:        This trigger occurred at longitude,latitude = 107.71,7.42 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 21 Apr 13 21:19:08 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     554135,   Seg_Num: 0
GRB_RA:          235.706d {+15h 42m 49s} (J2000),
                 235.776d {+15h 43m 06s} (current),
                 235.441d {+15h 41m 46s} (1950)
GRB_DEC:         +58.498d {+58d 29' 51"} (J2000),
                 +58.456d {+58d 27' 21"} (current),
                 +58.655d {+58d 39' 18"} (1950)
GRB_DATE:        16403 TJD;   111 DOY;   13/04/21
GRB_TIME:        75730.07 SOD {21:02:10.07} UT
TRIGGER_INDEX:   233
GRB_PHI:         -27.12 [deg]
GRB_THETA:        26.50 [deg]
DELTA_TIME:      25.00 [sec]
TRIGGER_DUR:     1.024 [sec] 
SOLN_STATUS:     0x83
RATE_SIGNIF:     5.38 [sigma]
IMAGE_SIGNIF:    6.74 [sigma]
LC_URL:          sw00554135000msb.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:
Sun Apr 21 17:19:43 EDT 2013