TDRSS lightcurve for Trigger=278854

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 08 May 07 04:31:59 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     278854,   Seg_Num: 0
GRB_RA:          312.783d {+20h 51m 08s} (J2000),
                 313.022d {+20h 52m 05s} (current),
                 311.128d {+20h 44m 31s} (1950)
GRB_DEC:         -78.368d {-78d 22' 04"} (J2000),
                 -78.340d {-78d 20' 24"} (current),
                 -78.554d {-78d 33' 14"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       8588 [cnts]    Image_Peak=882 [image_cnts]
TRIGGER_DUR:     1.024 [sec] 
TRIGGER_INDEX:   146     E_range: 50-350 keV
BKG_INTEN:       37508 [cnts]
BKG_TIME:        15486.05 SOD {04:18:06.05} UT
BKG_DUR:         8 [sec]
GRB_DATE:        14228 TJD;   128 DOY;   07/05/08
GRB_TIME:        15497.83 SOD {04:18:17.83} UT
GRB_PHI:         -126.96 [deg]
GRB_THETA:        28.25 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     51.03 [sigma]
IMAGE_SIGNIF:    19.90 [sigma]
MERIT_PARAMS:     +1  +0  +0  +0  +3 +35  +0  +0 +29  +1 
SUN_POSTN:        44.76d {+02h 59m 02s}  +16.98d {+16d 58' 33"}
SUN_DIST:        106.97 [deg]   Sun_angle= 6.1 [hr] (West of Sun)
MOON_POSTN:      295.22d {+19h 40m 53s}  -25.43d {-25d 25' 38"}
MOON_DIST:        53.54 [deg]
MOON_ILLUM:      71 [%]
GAL_COORDS:      314.88,-32.42 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      284.61,-57.12 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Coordinates.  
COMMENTS:        This Notice was delayed by more than 60 sec past the end of the trigger integration interval;  
COMMENTS:        probably due to it occurring during a Malindi downlink session.  
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:        This trigger occurred at longitude,latitude = 12.73,-9.64 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 08 May 07 04:41:49 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     278854,   Seg_Num: 0
GRB_RA:          312.783d {+20h 51m 08s} (J2000),
                 313.022d {+20h 52m 05s} (current),
                 311.128d {+20h 44m 31s} (1950)
GRB_DEC:         -78.368d {-78d 22' 04"} (J2000),
                 -78.340d {-78d 20' 24"} (current),
                 -78.554d {-78d 33' 14"} (1950)
GRB_DATE:        14228 TJD;   128 DOY;   07/05/08
GRB_TIME:        15497.83 SOD {04:18:17.83} UT
TRIGGER_INDEX:   146
GRB_PHI:         -126.96 [deg]
GRB_THETA:        28.25 [deg]
DELTA_TIME:      -56.00 [sec]
TRIGGER_DUR:     1.024 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     51.03 [sigma]
IMAGE_SIGNIF:    19.90 [sigma]
LC_URL:          sw00278854000msb.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:
Tue May  8 00:42:06 EDT 2007