TDRSS lightcurve for Trigger=915091

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 18 Jul 19 04:41:35 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     915091,   Seg_Num: 0
GRB_RA:          336.531d {+22h 26m 07s} (J2000),
                 336.819d {+22h 27m 17s} (current),
                 335.791d {+22h 23m 10s} (1950)
GRB_DEC:         -41.221d {-41d 13' 13"} (J2000),
                 -41.121d {-41d 07' 13"} (current),
                 -41.475d {-41d 28' 30"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       1121 [cnts]    Image_Peak=80 [image_cnts]
TRIGGER_DUR:     0.512 [sec] 
TRIGGER_INDEX:   127     E_range: 50-350 keV
BKG_INTEN:       10050 [cnts]
BKG_TIME:        16864.74 SOD {04:41:04.74} UT
BKG_DUR:         8 [sec]
GRB_DATE:        18682 TJD;   199 DOY;   19/07/18
GRB_TIME:        16875.17 SOD {04:41:15.17} UT
GRB_PHI:          25.78 [deg]
GRB_THETA:        10.19 [deg]
SOLN_STATUS:     0x83
RATE_SIGNIF:     18.13 [sigma]
IMAGE_SIGNIF:    6.69 [sigma]
MERIT_PARAMS:     +1  +0  +0  -1  +3  -4  +0  +0 +78  +0 
SUN_POSTN:       117.26d {+07h 49m 03s}  +21.07d {+21d 04' 23"}
SUN_DIST:        141.12 [deg]   Sun_angle= 9.4 [hr] (West of Sun)
MOON_POSTN:      312.72d {+20h 50m 53s}  -19.82d {-19d 48' 54"}
MOON_DIST:        29.56 [deg]
MOON_ILLUM:      98 [%]
GAL_COORDS:      358.09,-57.12 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      322.11,-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:        Since the IMAGE_SIGNIF is less than 7 sigma, this is a questionable detection.  
COMMENTS:        This trigger occurred at longitude,latitude = 350.16,12.03 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 18 Jul 19 05:11:41 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     915091,   Seg_Num: 0
GRB_RA:          336.531d {+22h 26m 07s} (J2000),
                 336.819d {+22h 27m 17s} (current),
                 335.791d {+22h 23m 10s} (1950)
GRB_DEC:         -41.221d {-41d 13' 13"} (J2000),
                 -41.121d {-41d 07' 13"} (current),
                 -41.475d {-41d 28' 30"} (1950)
GRB_DATE:        18682 TJD;   199 DOY;   19/07/18
GRB_TIME:        16875.17 SOD {04:41:15.17} UT
TRIGGER_INDEX:   127
GRB_PHI:          25.78 [deg]
GRB_THETA:        10.19 [deg]
DELTA_TIME:      77.00 [sec]
TRIGGER_DUR:     0.512 [sec] 
SOLN_STATUS:     0x83
RATE_SIGNIF:     18.13 [sigma]
IMAGE_SIGNIF:    6.69 [sigma]
LC_URL:          sw00915091000msb.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

Plot creation:
Thu Jul 18 01:12:04 EDT 2019