TDRSS lightcurve for Trigger=904394

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 May 19 07:26:00 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     904394,   Seg_Num: 0
GRB_RA:          114.764d {+07h 39m 03s} (J2000),
                 114.934d {+07h 39m 44s} (current),
                 114.327d {+07h 37m 19s} (1950)
GRB_DEC:         -38.824d {-38d 49' 26"} (J2000),
                 -38.869d {-38d 52' 09"} (current),
                 -38.708d {-38d 42' 29"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       2291 [cnts]    Image_Peak=72 [image_cnts]
TRIGGER_DUR:     0.512 [sec] 
TRIGGER_INDEX:   483     E_range: 50-350 keV
BKG_INTEN:       16629 [cnts]
BKG_TIME:        26729.07 SOD {07:25:29.07} UT
BKG_DUR:         8 [sec]
GRB_DATE:        18622 TJD;   139 DOY;   19/05/19
GRB_TIME:        26739.43 SOD {07:25:39.43} UT
GRB_PHI:         128.77 [deg]
GRB_THETA:        39.94 [deg]
SOLN_STATUS:     0x20002083
RATE_SIGNIF:     45.02 [sigma]
IMAGE_SIGNIF:    6.76 [sigma]
MERIT_PARAMS:     +1  +0  +0  -1  +3  -3  +0  +1 -16  +0 
SUN_POSTN:        55.80d {+03h 43m 12s}  +19.72d {+19d 43' 28"}
SUN_DIST:         80.55 [deg]   Sun_angle= -3.9 [hr] (East of Sun)
MOON_POSTN:      242.08d {+16h 08m 19s}  -17.35d {-17d 20' 51"}
MOON_DIST:       105.17 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      252.56, -8.21 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      129.23,-58.94 [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:        There is a bright star (mag=6.19) 6.54 arcmin from this position.  
COMMENTS:        This is a GRB.  
COMMENTS:        Since the IMAGE_SIGNIF is less than 7 sigma, this is a questionable detection.  
COMMENTS:        This trigger occurred at longitude,latitude = 60.44,13.94 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 May 19 07:45:11 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     904394,   Seg_Num: 0
GRB_RA:          114.764d {+07h 39m 03s} (J2000),
                 114.934d {+07h 39m 44s} (current),
                 114.327d {+07h 37m 19s} (1950)
GRB_DEC:         -38.824d {-38d 49' 26"} (J2000),
                 -38.869d {-38d 52' 09"} (current),
                 -38.708d {-38d 42' 29"} (1950)
GRB_DATE:        18622 TJD;   139 DOY;   19/05/19
GRB_TIME:        26739.43 SOD {07:25:39.43} UT
TRIGGER_INDEX:   483
GRB_PHI:         128.77 [deg]
GRB_THETA:        39.94 [deg]
DELTA_TIME:      -76.00 [sec]
TRIGGER_DUR:     0.512 [sec] 
SOLN_STATUS:     0x2083
RATE_SIGNIF:     45.02 [sigma]
IMAGE_SIGNIF:    6.76 [sigma]
LC_URL:          sw00904394000msb.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:
Sun May 19 03:45:23 EDT 2019