TDRSS lightcurve for Trigger=277191

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 26 Apr 07 06:05:07 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     277191,   Seg_Num: 0
GRB_RA:          266.862d {+17h 47m 27s} (J2000),
                 266.979d {+17h 47m 55s} (current),
                 266.061d {+17h 44m 15s} (1950)
GRB_DEC:         -29.993d {-29d 59' 35"} (J2000),
                 -29.995d {-29d 59' 43"} (current),
                 -29.976d {-29d 58' 33"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=2490 [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:        14216 TJD;   116 DOY;   07/04/26
GRB_TIME:        21830.08 SOD {06:03:50.08} UT
GRB_PHI:         174.09 [deg]
GRB_THETA:         8.42 [deg]
SOLN_STATUS:     0x11D
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    9.70 [sigma]
MERIT_PARAMS:     +0  +0 +100  +6  +1  +0  +0  +1 +61  +1 
SUN_POSTN:        33.34d {+02h 13m 22s}  +13.40d {+13d 24' 09"}
SUN_DIST:        127.98 [deg]   Sun_angle= 8.4 [hr] (West of Sun)
MOON_POSTN:      151.06d {+10h 04m 15s}  +13.50d {+13d 29' 59"}
MOON_DIST:       119.00 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:      359.30, -0.89 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      267.26, -6.58 [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 matches a source in the on-board catalog: Num=10339=SLX 1744-300,   delta=0.052 [deg].  
COMMENTS:        This matches a source in the ground catalog: SLX 1744-300,   delta=0.052 [deg].  
COMMENTS:        This is not a GRB.  
COMMENTS:        This is an interesting source.  
COMMENTS:        This trigger occurred at longitude,latitude = 307.50,19.88 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 26 Apr 07 06:07:25 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     277191,   Seg_Num: 0
GRB_RA:          266.862d {+17h 47m 27s} (J2000),
                 266.979d {+17h 47m 55s} (current),
                 266.061d {+17h 44m 15s} (1950)
GRB_DEC:         -29.993d {-29d 59' 35"} (J2000),
                 -29.995d {-29d 59' 43"} (current),
                 -29.976d {-29d 58' 33"} (1950)
GRB_DATE:        14216 TJD;   116 DOY;   07/04/26
GRB_TIME:        21830.08 SOD {06:03:50.08} UT
TRIGGER_INDEX:   20000
GRB_PHI:         174.09 [deg]
GRB_THETA:         8.42 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     64.000 [sec] 
SOLN_STATUS:     0x11D
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    9.70 [sigma]
LC_URL:          sw00277191000msb.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:
Thu Apr 26 02:08:07 EDT 2007