TDRSS lightcurve for Trigger=520928

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 26 Apr 12 11:39:38 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     520928,   Seg_Num: 0
GRB_RA:           75.720d {+05h 02m 53s} (J2000),
                  75.845d {+05h 03m 23s} (current),
                  75.213d {+05h 00m 51s} (1950)
GRB_DEC:         -26.314d {-26d 18' 51"} (J2000),
                 -26.298d {-26d 17' 51"} (current),
                 -26.384d {-26d 23' 03"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=1111 [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:        16043 TJD;   117 DOY;   12/04/26
GRB_TIME:        41895.85 SOD {11:38:15.85} UT
GRB_PHI:         -14.43 [deg]
GRB_THETA:        39.05 [deg]
SOLN_STATUS:     0x2013
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    7.05 [sigma]
MERIT_PARAMS:     +1  +0  +0  +6  +1  -3  +0  +0 -54  +0 
SUN_POSTN:        34.31d {+02h 17m 14s}  +13.73d {+13d 43' 51"}
SUN_DIST:         56.86 [deg]   Sun_angle= -2.8 [hr] (East of Sun)
MOON_POSTN:       93.07d {+06h 12m 17s}  +20.91d {+20d 54' 39"}
MOON_DIST:        50.08 [deg]
MOON_ILLUM:      22 [%]
GAL_COORDS:      227.55,-34.47 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       70.39,-48.79 [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:        There is a bright star (mag=5.02) 9.90 arcmin from this position.  
COMMENTS:        This is a GRB.  
COMMENTS:        This trigger occurred at longitude,latitude = 336.19,11.73 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 26 Apr 12 12:07:54 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     520928,   Seg_Num: 0
GRB_RA:           75.720d {+05h 02m 53s} (J2000),
                  75.845d {+05h 03m 23s} (current),
                  75.213d {+05h 00m 51s} (1950)
GRB_DEC:         -26.314d {-26d 18' 51"} (J2000),
                 -26.298d {-26d 17' 51"} (current),
                 -26.384d {-26d 23' 03"} (1950)
GRB_DATE:        16043 TJD;   117 DOY;   12/04/26
GRB_TIME:        41895.85 SOD {11:38:15.85} UT
TRIGGER_INDEX:   20000
GRB_PHI:         -14.43 [deg]
GRB_THETA:        39.05 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     64.000 [sec] 
SOLN_STATUS:     0x2013
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    7.05 [sigma]
LC_URL:          sw00520928000msb.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:
Thu Apr 26 08:08:04 EDT 2012