TDRSS lightcurve for Trigger=819490

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 29 Mar 18 14:09:01 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     819490,   Seg_Num: 0
GRB_RA:           82.916d {+05h 31m 40s} (J2000),
                  83.106d {+05h 32m 25s} (current),
                  82.397d {+05h 29m 35s} (1950)
GRB_DEC:         -23.708d {-23d 42' 27"} (J2000),
                 -23.695d {-23d 41' 42"} (current),
                 -23.743d {-23d 44' 35"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       11633 [cnts]    Image_Peak=207 [image_cnts]
TRIGGER_DUR:     4.096 [sec] 
TRIGGER_INDEX:   300     E_range: 25-100 keV
BKG_INTEN:       102949 [cnts]
BKG_TIME:        50843.29 SOD {14:07:23.29} UT
BKG_DUR:         40 [sec]
GRB_DATE:        18206 TJD;    88 DOY;   18/03/29
GRB_TIME:        50903.97 SOD {14:08:23.97} UT
GRB_PHI:         -104.84 [deg]
GRB_THETA:        38.52 [deg]
SOLN_STATUS:     0x83
RATE_SIGNIF:     10.90 [sigma]
IMAGE_SIGNIF:    6.87 [sigma]
MERIT_PARAMS:     +1  +0  +0  +2  +2  -3  +0  +0 -21  +0 
SUN_POSTN:         8.12d {+00h 32m 29s}   +3.50d {+03d 30' 14"}
SUN_DIST:         77.75 [deg]   Sun_angle= -5.0 [hr] (East of Sun)
MOON_POSTN:      166.29d {+11h 05m 11s}   +8.77d {+08d 46' 08"}
MOON_DIST:        87.36 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:      226.98,-27.47 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       80.49,-46.91 [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 = 58.89,7.58 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 29 Mar 18 14:27:18 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     819490,   Seg_Num: 0
GRB_RA:           82.916d {+05h 31m 40s} (J2000),
                  83.106d {+05h 32m 25s} (current),
                  82.397d {+05h 29m 35s} (1950)
GRB_DEC:         -23.708d {-23d 42' 27"} (J2000),
                 -23.695d {-23d 41' 42"} (current),
                 -23.743d {-23d 44' 35"} (1950)
GRB_DATE:        18206 TJD;    88 DOY;   18/03/29
GRB_TIME:        50903.97 SOD {14:08:23.97} UT
TRIGGER_INDEX:   300
GRB_PHI:         -104.84 [deg]
GRB_THETA:        38.52 [deg]
DELTA_TIME:      12.00 [sec]
TRIGGER_DUR:     4.096 [sec] 
SOLN_STATUS:     0x83
RATE_SIGNIF:     10.90 [sigma]
IMAGE_SIGNIF:    6.87 [sigma]
LC_URL:          sw00819490000msb.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:
Thu Mar 29 10:27:43 EDT 2018