TDRSS lightcurve for Trigger=903845

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 15 May 19 16:04:50 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     903845,   Seg_Num: 0
GRB_RA:           98.840d {+06h 35m 22s} (J2000),
                  99.226d {+06h 36m 54s} (current),
                  97.843d {+06h 31m 22s} (1950)
GRB_DEC:         +52.295d {+52d 17' 41"} (J2000),
                 +52.278d {+52d 16' 40"} (current),
                 +52.335d {+52d 20' 06"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       3799 [cnts]    Image_Peak=212 [image_cnts]
TRIGGER_DUR:     2.048 [sec] 
TRIGGER_INDEX:   264     E_range: 25-100 keV
BKG_INTEN:       36583 [cnts]
BKG_TIME:        57825.09 SOD {16:03:45.09} UT
BKG_DUR:         24 [sec]
GRB_DATE:        18618 TJD;   135 DOY;   19/05/15
GRB_TIME:        57861.31 SOD {16:04:21.31} UT
GRB_PHI:         -87.68 [deg]
GRB_THETA:        25.55 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     7.41 [sigma]
IMAGE_SIGNIF:    9.98 [sigma]
MERIT_PARAMS:     +1  +0  +0  +1  +2  +0  +0  +0 -65  +0 
SUN_POSTN:        52.19d {+03h 28m 45s}  +18.90d {+18d 54' 16"}
SUN_DIST:         49.40 [deg]   Sun_angle= -3.1 [hr] (East of Sun)
MOON_POSTN:      193.61d {+12h 54m 27s}   -0.33d {-00d 19' 35"}
MOON_DIST:        92.94 [deg]
MOON_ILLUM:      87 [%]
GAL_COORDS:      163.06, 18.82 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       96.17, 29.04 [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 = 0.68,0.36 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 15 May 19 16:24:03 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     903845,   Seg_Num: 0
GRB_RA:           98.840d {+06h 35m 22s} (J2000),
                  99.226d {+06h 36m 54s} (current),
                  97.843d {+06h 31m 22s} (1950)
GRB_DEC:         +52.295d {+52d 17' 41"} (J2000),
                 +52.278d {+52d 16' 40"} (current),
                 +52.335d {+52d 20' 06"} (1950)
GRB_DATE:        18618 TJD;   135 DOY;   19/05/15
GRB_TIME:        57861.31 SOD {16:04:21.31} UT
TRIGGER_INDEX:   264
GRB_PHI:         -87.68 [deg]
GRB_THETA:        25.55 [deg]
DELTA_TIME:      57.00 [sec]
TRIGGER_DUR:     2.048 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     7.41 [sigma]
IMAGE_SIGNIF:    9.98 [sigma]
LC_URL:          sw00903845000msb.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:
Wed May 15 12:24:23 EDT 2019