TDRSS lightcurve for Trigger=421695

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 11 May 10 11:50:53 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     421695,   Seg_Num: 0
GRB_RA:          280.612d {+18h 42m 27s} (J2000),
                 280.726d {+18h 42m 54s} (current),
                 280.062d {+18h 40m 15s} (1950)
GRB_DEC:         +18.328d {+18d 19' 40"} (J2000),
                 +18.339d {+18d 20' 19"} (current),
                 +18.278d {+18d 16' 41"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       164 [cnts]    Image_Peak=25 [image_cnts]
TRIGGER_DUR:     0.032 [sec] 
TRIGGER_INDEX:   10314     E_range: 15-50 keV
BKG_INTEN:       32604 [cnts]
BKG_TIME:        42626.21 SOD {11:50:26.21} UT
BKG_DUR:         8 [sec]
GRB_DATE:        15327 TJD;   131 DOY;   10/05/11
GRB_TIME:        42639.01 SOD {11:50:39.01} UT
GRB_PHI:         -76.36 [deg]
GRB_THETA:        24.40 [deg]
SOLN_STATUS:     0x83
RATE_SIGNIF:     6.55 [sigma]
IMAGE_SIGNIF:    6.65 [sigma]
MERIT_PARAMS:     +1  +0  +0  -5  +1  -4  +0  +0 +45  +0 
SUN_POSTN:        48.25d {+03h 13m 00s}  +17.92d {+17d 55' 22"}
SUN_DIST:        116.95 [deg]   Sun_angle= 8.5 [hr] (West of Sun)
MOON_POSTN:       16.41d {+01h 05m 37s}  +12.45d {+12d 26' 45"}
MOON_DIST:        91.37 [deg]
MOON_ILLUM:      7 [%]
GAL_COORDS:       48.42, 10.17 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      283.45, 41.27 [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 = 157.77,20.32 [deg].  
COMMENTS:        This AT will self-cancel at the end of the first orbit (ie I_signif<7.0 && Trig_dur<65msec).  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 11 May 10 12:11:18 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     421695,   Seg_Num: 0
GRB_RA:          280.612d {+18h 42m 27s} (J2000),
                 280.726d {+18h 42m 54s} (current),
                 280.062d {+18h 40m 15s} (1950)
GRB_DEC:         +18.328d {+18d 19' 40"} (J2000),
                 +18.339d {+18d 20' 19"} (current),
                 +18.278d {+18d 16' 41"} (1950)
GRB_DATE:        15327 TJD;   131 DOY;   10/05/11
GRB_TIME:        42639.01 SOD {11:50:39.01} UT
TRIGGER_INDEX:   10314
GRB_PHI:         -76.36 [deg]
GRB_THETA:        24.40 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     0.032 [sec] 
SOLN_STATUS:     0x83
RATE_SIGNIF:     6.55 [sigma]
IMAGE_SIGNIF:    6.65 [sigma]
LC_URL:          sw00421695000msb.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 May 11 08:11:50 EDT 2010