TDRSS lightcurve for Trigger=968731

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 30 Apr 20 12:56:54 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     968731,   Seg_Num: 0
GRB_RA:          272.131d {+18h 08m 32s} (J2000),
                 272.434d {+18h 09m 44s} (current),
                 271.387d {+18h 05m 33s} (1950)
GRB_DEC:         -20.398d {-20d 23' 50"} (J2000),
                 -20.393d {-20d 23' 34"} (current),
                 -20.406d {-20d 24' 21"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       312 [cnts]    Image_Peak=58 [image_cnts]
TRIGGER_DUR:     0.032 [sec] 
TRIGGER_INDEX:   10309     E_range: 15-50 keV
BKG_INTEN:       23104 [cnts]
BKG_TIME:        46591.13 SOD {12:56:31.13} UT
BKG_DUR:         8 [sec]
GRB_DATE:        18969 TJD;   121 DOY;   20/04/30
GRB_TIME:        46601.69 SOD {12:56:41.69} UT
GRB_PHI:         -162.57 [deg]
GRB_THETA:         9.36 [deg]
SOLN_STATUS:     0x10D
RATE_SIGNIF:     20.97 [sigma]
IMAGE_SIGNIF:    8.92 [sigma]
MERIT_PARAMS:     +0  +0  +2  -5  +1  -1  +0  +1 +62  +0 
SUN_POSTN:        38.22d {+02h 32m 53s}  +15.01d {+15d 00' 49"}
SUN_DIST:        128.29 [deg]   Sun_angle= 8.4 [hr] (West of Sun)
MOON_POSTN:      129.80d {+08h 39m 13s}  +21.69d {+21d 41' 14"}
MOON_DIST:       145.18 [deg]
MOON_ILLUM:      47 [%]
GAL_COORDS:        9.99, -0.21 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      272.00,  3.03 [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 matches a source in the on-board catalog: Num=10201=SGR1806-20,   delta=0.030 [deg].  
COMMENTS:        This matches a source in the ground catalog: SGR1806-20,   delta=0.030 [deg].  
COMMENTS:        This is not a GRB.  
COMMENTS:        This is an interesting source.  
COMMENTS:        This trigger occurred at longitude,latitude = 149.37,-8.03 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 30 Apr 20 13:14:23 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     968731,   Seg_Num: 0
GRB_RA:          272.131d {+18h 08m 32s} (J2000),
                 272.434d {+18h 09m 44s} (current),
                 271.387d {+18h 05m 33s} (1950)
GRB_DEC:         -20.398d {-20d 23' 50"} (J2000),
                 -20.393d {-20d 23' 34"} (current),
                 -20.406d {-20d 24' 21"} (1950)
GRB_DATE:        18969 TJD;   121 DOY;   20/04/30
GRB_TIME:        46601.97 SOD {12:56:41.97} UT
TRIGGER_INDEX:   10309
GRB_PHI:         -162.57 [deg]
GRB_THETA:         9.36 [deg]
DELTA_TIME:      37.00 [sec]
TRIGGER_DUR:     0.032 [sec] 
SOLN_STATUS:     0x10D
RATE_SIGNIF:     20.97 [sigma]
IMAGE_SIGNIF:    8.92 [sigma]
LC_URL:          sw00968731000msb.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 Apr 30 09:14:43 EDT 2020