TDRSS lightcurve for Trigger=549824

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 26 Feb 13 22:24:08 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     549824,   Seg_Num: 0
GRB_RA:          273.981d {+18h 15m 56s} (J2000),
                 274.168d {+18h 16m 40s} (current),
                 273.272d {+18h 13m 05s} (1950)
GRB_DEC:         -14.028d {-14d 01' 39"} (J2000),
                 -14.023d {-14d 01' 20"} (current),
                 -14.045d {-14d 02' 42"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=4599 [image_cnts]
TRIGGER_DUR:     384.000 [sec]   (=6.4 [min])
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:        16349 TJD;    57 DOY;   13/02/26
GRB_TIME:        80221.73 SOD {22:17:01.73} UT
GRB_PHI:         164.31 [deg]
GRB_THETA:        25.54 [deg]
SOLN_STATUS:     0x11D
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    8.28 [sigma]
MERIT_PARAMS:     +0  +0 +124  +7  +1  -1  +0  +1 -42  +0 
SUN_POSTN:       340.12d {+22h 40m 28s}   -8.39d {-08d 23' 12"}
SUN_DIST:         64.75 [deg]   Sun_angle= 4.4 [hr] (West of Sun)
MOON_POSTN:      170.75d {+11h 23m 01s}   -0.70d {-00d 41' 43"}
MOON_DIST:       102.83 [deg]
MOON_ILLUM:      99 [%]
GAL_COORDS:       16.43,  1.30 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      273.91,  9.36 [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: Num=10730=PSR 1819-1458,   delta=1.290 [deg].  
COMMENTS:        This matches a source in the ground catalog: GX_17+2,   delta=0.019 [deg].  
COMMENTS:        This is not a GRB.  
COMMENTS:        This trigger occurred at longitude,latitude = 203.93,19.46 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 26 Feb 13 22:33:44 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     549824,   Seg_Num: 0
GRB_RA:          273.981d {+18h 15m 56s} (J2000),
                 274.168d {+18h 16m 40s} (current),
                 273.272d {+18h 13m 05s} (1950)
GRB_DEC:         -14.028d {-14d 01' 39"} (J2000),
                 -14.023d {-14d 01' 20"} (current),
                 -14.045d {-14d 02' 42"} (1950)
GRB_DATE:        16349 TJD;    57 DOY;   13/02/26
GRB_TIME:        80221.73 SOD {22:17:01.73} UT
TRIGGER_INDEX:   20000
GRB_PHI:         164.31 [deg]
GRB_THETA:        25.54 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     384.000 [sec]   (=6.4 [min])
SOLN_STATUS:     0x11D
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    8.28 [sigma]
LC_URL:          sw00549824000msb.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:
Tue Feb 26 17:34:04 EST 2013