TDRSS lightcurve for Trigger=275988

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 18 Apr 07 02:21:25 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     275988,   Seg_Num: 0
GRB_RA:          299.605d {+19h 58m 25s} (J2000),
                 299.673d {+19h 58m 42s} (current),
                 299.135d {+19h 56m 32s} (1950)
GRB_DEC:         +35.190d {+35d 11' 22"} (J2000),
                 +35.210d {+35d 12' 34"} (current),
                 +35.053d {+35d 03' 11"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       6314 [cnts]    Image_Peak=308 [image_cnts]
TRIGGER_DUR:     1.024 [sec] 
TRIGGER_INDEX:   137     E_range: 25-100 keV
BKG_INTEN:       40429 [cnts]
BKG_TIME:        8454.10 SOD {02:20:54.10} UT
BKG_DUR:         8 [sec]
GRB_DATE:        14208 TJD;   108 DOY;   07/04/18
GRB_TIME:        8468.43 SOD {02:21:08.43} UT
GRB_PHI:         -14.10 [deg]
GRB_THETA:        16.23 [deg]
SOLN_STATUS:     0x10D
RATE_SIGNIF:     14.86 [sigma]
IMAGE_SIGNIF:    10.18 [sigma]
MERIT_PARAMS:     +0  +0 +100  +0  +2  +4  +0  +1 -16  +1 
SUN_POSTN:        25.71d {+01h 42m 50s}  +10.65d {+10d 39' 02"}
SUN_DIST:         80.67 [deg]   Sun_angle= 5.7 [hr] (West of Sun)
MOON_POSTN:       32.94d {+02h 11m 46s}  +17.49d {+17d 29' 37"}
MOON_DIST:        82.60 [deg]
MOON_ILLUM:      1 [%]
GAL_COORDS:       71.33,  3.05 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      313.69, 54.23 [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=10002=Cyg X-1,   delta=0.017 [deg].  
COMMENTS:        This matches a source in the ground catalog: Cyg X-1,   delta=0.017 [deg].  
COMMENTS:        This is not a GRB.  
COMMENTS:        This is an interesting source.  
COMMENTS:        This trigger occurred at longitude,latitude = 77.27,20.42 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 18 Apr 07 02:24:56 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     275988,   Seg_Num: 0
GRB_RA:          299.605d {+19h 58m 25s} (J2000),
                 299.673d {+19h 58m 42s} (current),
                 299.135d {+19h 56m 32s} (1950)
GRB_DEC:         +35.190d {+35d 11' 22"} (J2000),
                 +35.210d {+35d 12' 34"} (current),
                 +35.053d {+35d 03' 11"} (1950)
GRB_DATE:        14208 TJD;   108 DOY;   07/04/18
GRB_TIME:        8468.43 SOD {02:21:08.43} UT
TRIGGER_INDEX:   137
GRB_PHI:         -14.10 [deg]
GRB_THETA:        16.23 [deg]
DELTA_TIME:      6.00 [sec]
TRIGGER_DUR:     1.024 [sec] 
SOLN_STATUS:     0x10D
RATE_SIGNIF:     14.86 [sigma]
IMAGE_SIGNIF:    10.18 [sigma]
LC_URL:          sw00275988000msb.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

Plot creation:
Tue Apr 17 22:25:45 EDT 2007