TDRSS lightcurve for Trigger=280451

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 26 May 07 09:27:57 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     280451,   Seg_Num: 0
GRB_RA:          301.355d {+20h 05m 25s} (J2000),
                 301.428d {+20h 05m 43s} (current),
                 300.858d {+20h 03m 26s} (1950)
GRB_DEC:         +31.188d {+31d 11' 18"} (J2000),
                 +31.210d {+31d 12' 35"} (current),
                 +31.044d {+31d 02' 40"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=4048 [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:        14246 TJD;   146 DOY;   07/05/26
GRB_TIME:        33998.01 SOD {09:26:38.01} UT
GRB_PHI:         -130.22 [deg]
GRB_THETA:        26.03 [deg]
SOLN_STATUS:     0x413
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    12.77 [sigma]
MERIT_PARAMS:     +1  +0  +0  +6  +1  +2  +0  +1 +22  +1 
SUN_POSTN:        62.82d {+04h 11m 17s}  +21.09d {+21d 05' 21"}
SUN_DIST:        103.25 [deg]   Sun_angle= 8.1 [hr] (West of Sun)
MOON_POSTN:      181.69d {+12h 06m 46s}   -2.56d {-02d 33' 48"}
MOON_DIST:       116.55 [deg]
MOON_ILLUM:      73 [%]
GAL_COORDS:       68.71, -0.31 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      313.79, 49.97 [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 = 310.52,1.90 [deg].  
COMMENTS:        This trigger occured while the StarTracker had lost lock, so it is possibly bogus.  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 26 May 07 09:43:22 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     280451,   Seg_Num: 0
GRB_RA:          301.355d {+20h 05m 25s} (J2000),
                 301.428d {+20h 05m 43s} (current),
                 300.858d {+20h 03m 26s} (1950)
GRB_DEC:         +31.188d {+31d 11' 18"} (J2000),
                 +31.210d {+31d 12' 35"} (current),
                 +31.044d {+31d 02' 40"} (1950)
GRB_DATE:        14246 TJD;   146 DOY;   07/05/26
GRB_TIME:        33998.01 SOD {09:26:38.01} UT
TRIGGER_INDEX:   20000
GRB_PHI:         -130.22 [deg]
GRB_THETA:        26.03 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     64.000 [sec] 
SOLN_STATUS:     0x413
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    12.77 [sigma]
LC_URL:          sw00280451000msb.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:
Sat May 26 05:43:48 EDT 2007