TDRSS lightcurve for Trigger=553977

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 20 Apr 13 07:29:47 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     553977,   Seg_Num: 0
GRB_RA:          196.100d {+13h 04m 24s} (J2000),
                 196.235d {+13h 04m 56s} (current),
                 195.589d {+13h 02m 21s} (1950)
GRB_DEC:         +59.424d {+59d 25' 25"} (J2000),
                 +59.352d {+59d 21' 09"} (current),
                 +59.691d {+59d 41' 29"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=2323 [image_cnts]
TRIGGER_DUR:     64.000 [sec] 
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:        16402 TJD;   110 DOY;   13/04/20
GRB_TIME:        26909.53 SOD {07:28:29.53} UT
GRB_PHI:         -19.09 [deg]
GRB_THETA:        28.56 [deg]
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    12.77 [sigma]
MERIT_PARAMS:     +1  +0  +0  +6  +1  +2  +0  +0 +31  +0 
SUN_POSTN:        28.28d {+01h 53m 07s}  +11.61d {+11d 36' 23"}
SUN_DIST:        108.38 [deg]   Sun_angle= -11.2 [hr] (East of Sun)
MOON_POSTN:      141.27d {+09h 25m 05s}   +9.64d {+09d 38' 38"}
MOON_DIST:        64.37 [deg]
MOON_ILLUM:      67 [%]
GAL_COORDS:      119.85, 57.63 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      156.45, 57.78 [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 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 = 157.58,-12.01 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 20 Apr 13 07:47:03 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     553977,   Seg_Num: 0
GRB_RA:          196.100d {+13h 04m 24s} (J2000),
                 196.235d {+13h 04m 56s} (current),
                 195.589d {+13h 02m 21s} (1950)
GRB_DEC:         +59.424d {+59d 25' 25"} (J2000),
                 +59.352d {+59d 21' 09"} (current),
                 +59.691d {+59d 41' 29"} (1950)
GRB_DATE:        16402 TJD;   110 DOY;   13/04/20
GRB_TIME:        26909.53 SOD {07:28:29.53} UT
TRIGGER_INDEX:   20000
GRB_PHI:         -19.09 [deg]
GRB_THETA:        28.56 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     64.000 [sec] 
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    12.77 [sigma]
LC_URL:          sw00553977000msb.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:
Sat Apr 20 03:47:43 EDT 2013