TDRSS lightcurve for Trigger=974827

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 28 May 20 10:27:39 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     974827,   Seg_Num: 0
GRB_RA:          176.637d {+11h 46m 33s} (J2000),
                 176.908d {+11h 47m 38s} (current),
                 175.967d {+11h 43m 52s} (1950)
GRB_DEC:         +58.147d {+58d 08' 50"} (J2000),
                 +58.034d {+58d 02' 01"} (current),
                 +58.425d {+58d 25' 30"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       1999 [cnts]    Image_Peak=149 [image_cnts]
TRIGGER_DUR:     0.512 [sec] 
TRIGGER_INDEX:   41     E_range: 25-100 keV
BKG_INTEN:       21251 [cnts]
BKG_TIME:        37630.98 SOD {10:27:10.98} UT
BKG_DUR:         8 [sec]
GRB_DATE:        18997 TJD;   149 DOY;   20/05/28
GRB_TIME:        37643.84 SOD {10:27:23.84} UT
GRB_PHI:         -131.96 [deg]
GRB_THETA:        27.68 [deg]
SOLN_STATUS:     0x20000003
RATE_SIGNIF:     15.39 [sigma]
IMAGE_SIGNIF:    9.17 [sigma]
MERIT_PARAMS:     +1  +0  +0  -1  +2  +0  +0  +0 -13  +0 
SUN_POSTN:        65.76d {+04h 23m 03s}  +21.57d {+21d 34' 03"}
SUN_DIST:         82.28 [deg]   Sun_angle= -7.4 [hr] (East of Sun)
MOON_POSTN:      139.28d {+09h 17m 06s}  +19.85d {+19d 50' 47"}
MOON_DIST:        46.97 [deg]
MOON_ILLUM:      31 [%]
GAL_COORDS:      138.62, 56.96 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      145.19, 50.09 [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 = 222.06,20.22 [deg].  
COMMENTS:           
COMMENTS:        NOTE: This BAT event is temporally(1.0<100sec) coincident with the FERMI_GBM event (trignum=612354449).  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 28 May 20 10:45:01 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     974827,   Seg_Num: 0
GRB_RA:          176.637d {+11h 46m 33s} (J2000),
                 176.908d {+11h 47m 38s} (current),
                 175.967d {+11h 43m 52s} (1950)
GRB_DEC:         +58.147d {+58d 08' 50"} (J2000),
                 +58.034d {+58d 02' 01"} (current),
                 +58.425d {+58d 25' 30"} (1950)
GRB_DATE:        18997 TJD;   149 DOY;   20/05/28
GRB_TIME:        37643.84 SOD {10:27:23.84} UT
TRIGGER_INDEX:   41
GRB_PHI:         -131.96 [deg]
GRB_THETA:        27.68 [deg]
DELTA_TIME:      -5.00 [sec]
TRIGGER_DUR:     0.512 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     15.39 [sigma]
IMAGE_SIGNIF:    9.17 [sigma]
LC_URL:          sw00974827000msb.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 May 28 06:45:44 EDT 2020