TDRSS lightcurve for Trigger=519868

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 10 Apr 12 23:09:00 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     519868,   Seg_Num: 0
GRB_RA:          272.153d {+18h 08m 37s} (J2000),
                 272.336d {+18h 09m 21s} (current),
                 271.409d {+18h 05m 38s} (1950)
GRB_DEC:         -20.410d {-20d 24' 35"} (J2000),
                 -20.407d {-20d 24' 26"} (current),
                 -20.419d {-20d 25' 07"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       1623 [cnts]    Image_Peak=309 [image_cnts]
TRIGGER_DUR:     0.064 [sec] 
TRIGGER_INDEX:   10413     E_range: 15-50 keV
BKG_INTEN:       32746 [cnts]
BKG_TIME:        83303.91 SOD {23:08:23.91} UT
BKG_DUR:         8 [sec]
GRB_DATE:        16027 TJD;   101 DOY;   12/04/10
GRB_TIME:        83313.19 SOD {23:08:33.19} UT
GRB_PHI:         174.55 [deg]
GRB_THETA:        51.23 [deg]
SOLN_STATUS:     0x10D
RATE_SIGNIF:     109.45 [sigma]
IMAGE_SIGNIF:    16.31 [sigma]
MERIT_PARAMS:     +0  +0 +124  -4  +1  +4  -5  +1 +33  +0 
SUN_POSTN:        19.85d {+01h 19m 23s}   +8.37d {+08d 22' 20"}
SUN_DIST:        109.26 [deg]   Sun_angle= 7.2 [hr] (West of Sun)
MOON_POSTN:      258.49d {+17h 13m 58s}  -21.97d {-21d 58' 05"}
MOON_DIST:        13.00 [deg]
MOON_ILLUM:      77 [%]
GAL_COORDS:        9.99, -0.23 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      272.02,  3.01 [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 matches a source in the on-board catalog: Num=10201=SGR1806-20,   delta=0.007 [deg].  
COMMENTS:        This matches a source in the ground catalog: SGR1806-20,   delta=0.007 [deg].  
COMMENTS:        This is not a GRB.  
COMMENTS:        This trigger occurred at longitude,latitude = 98.26,-14.02 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 10 Apr 12 23:25:37 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     519868,   Seg_Num: 0
GRB_RA:          272.153d {+18h 08m 37s} (J2000),
                 272.336d {+18h 09m 21s} (current),
                 271.409d {+18h 05m 38s} (1950)
GRB_DEC:         -20.410d {-20d 24' 35"} (J2000),
                 -20.407d {-20d 24' 26"} (current),
                 -20.419d {-20d 25' 07"} (1950)
GRB_DATE:        16027 TJD;   101 DOY;   12/04/10
GRB_TIME:        83313.20 SOD {23:08:33.20} UT
TRIGGER_INDEX:   10413
GRB_PHI:         174.55 [deg]
GRB_THETA:        51.23 [deg]
DELTA_TIME:      30.00 [sec]
TRIGGER_DUR:     0.064 [sec] 
SOLN_STATUS:     0x10D
RATE_SIGNIF:     109.45 [sigma]
IMAGE_SIGNIF:    16.31 [sigma]
LC_URL:          sw00519868000msb.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

Plot creation:
Tue Apr 10 19:26:03 EDT 2012