TDRSS lightcurve for Trigger=420398

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 25 Apr 10 02:51:29 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     420398,   Seg_Num: 0
GRB_RA:          299.187d {+19h 56m 45s} (J2000),
                 299.344d {+19h 57m 22s} (current),
                 298.424d {+19h 53m 42s} (1950)
GRB_DEC:         -26.441d {-26d 26' 27"} (J2000),
                 -26.413d {-26d 24' 46"} (current),
                 -26.575d {-26d 34' 30"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       5375 [cnts]    Image_Peak=238 [image_cnts]
TRIGGER_DUR:     1.024 [sec] 
TRIGGER_INDEX:   139     E_range: 15-50 keV
BKG_INTEN:       35656 [cnts]
BKG_TIME:        10226.26 SOD {02:50:26.26} UT
BKG_DUR:         8 [sec]
GRB_DATE:        15311 TJD;   115 DOY;   10/04/25
GRB_TIME:        10245.07 SOD {02:50:45.07} UT
GRB_PHI:         -83.40 [deg]
GRB_THETA:        28.53 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     14.24 [sigma]
IMAGE_SIGNIF:    9.39 [sigma]
MERIT_PARAMS:     +1  +0  +0  +0  +1  +0  +0  +0 +14  +0 
SUN_POSTN:        32.53d {+02h 10m 07s}  +13.12d {+13d 07' 21"}
SUN_DIST:         98.60 [deg]   Sun_angle= 6.2 [hr] (West of Sun)
MOON_POSTN:      168.63d {+11h 14m 32s}   -0.12d {-00d 07' 22"}
MOON_DIST:       125.67 [deg]
MOON_ILLUM:      85 [%]
GAL_COORDS:       14.79,-25.28 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      296.02, -5.60 [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:        This trigger occurred at longitude,latitude = 62.51,20.16 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 25 Apr 10 03:10:56 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     420398,   Seg_Num: 0
GRB_RA:          299.187d {+19h 56m 45s} (J2000),
                 299.344d {+19h 57m 22s} (current),
                 298.424d {+19h 53m 42s} (1950)
GRB_DEC:         -26.441d {-26d 26' 27"} (J2000),
                 -26.413d {-26d 24' 46"} (current),
                 -26.575d {-26d 34' 30"} (1950)
GRB_DATE:        15311 TJD;   115 DOY;   10/04/25
GRB_TIME:        10245.07 SOD {02:50:45.07} UT
TRIGGER_INDEX:   139
GRB_PHI:         -83.40 [deg]
GRB_THETA:        28.53 [deg]
DELTA_TIME:      39.00 [sec]
TRIGGER_DUR:     1.024 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     14.24 [sigma]
IMAGE_SIGNIF:    9.39 [sigma]
LC_URL:          sw00420398000msb.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

Extended TDRSS lc No.4

Plot creation:
Sat Apr 24 23:11:28 EDT 2010