TDRSS lightcurve for Trigger=829046

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 26 Apr 18 13:20:12 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     829046,   Seg_Num: 0
GRB_RA:           57.459d {+03h 49m 50s} (J2000),
                  57.595d {+03h 50m 23s} (current),
                  57.086d {+03h 48m 21s} (1950)
GRB_DEC:         -48.782d {-48d 46' 53"} (J2000),
                 -48.727d {-48d 43' 36"} (current),
                 -48.932d {-48d 55' 55"} (1950)
GRB_ERROR:       4.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=1003 [image_cnts]
TRIGGER_DUR:     64.000 [sec] 
TRIGGER_INDEX:   20000     E_range: 15-50 keV
BKG_INTEN:       0 [cnts]
BKG_TIME:        0.00 SOD {00:00:00.00} UT
BKG_DUR:         0 [sec]
GRB_DATE:        18234 TJD;   116 DOY;   18/04/26
GRB_TIME:        47915.15 SOD {13:18:35.15} UT
GRB_PHI:         149.08 [deg]
GRB_THETA:        16.70 [deg]
SOLN_STATUS:     0x1099D
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    5.86 [sigma]
MERIT_PARAMS:     +0  +0 +125  +6  +1  -5  +0  +0 -40  +1 
SUN_POSTN:        33.95d {+02h 15m 47s}  +13.61d {+13d 36' 29"}
SUN_DIST:         65.77 [deg]   Sun_angle= -1.6 [hr] (East of Sun)
MOON_POSTN:      175.16d {+11h 40m 38s}   +5.84d {+05d 50' 20"}
MOON_DIST:       112.34 [deg]
MOON_ILLUM:      87 [%]
GAL_COORDS:      257.49,-49.51 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       30.70,-65.66 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Coordinates.  
COMMENTS:        This is an image trigger.  (The RATE_SIGNIF & BKG_{INTEN, TIME, DUR} are undefined.)  
COMMENTS:        A point_source was found.  
COMMENTS:        This is a low-flux event whose position matches one of the nearby galaxy sources in the on-board catalog!  
COMMENTS:        This matches a source in the on-board catalog: Num=12251=I2000,   delta=0.139 [deg].  
COMMENTS:        This matches a source in the ground catalog: I2000,   delta=0.139 [deg].  
COMMENTS:        This is a GRB in nearby galaxy or it is noise.  
COMMENTS:        This trigger occurred at longitude,latitude = 12.44,-13.68 [deg].

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 26 Apr 18 13:35:43 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     829046,   Seg_Num: 0
GRB_RA:           57.459d {+03h 49m 50s} (J2000),
                  57.595d {+03h 50m 23s} (current),
                  57.086d {+03h 48m 21s} (1950)
GRB_DEC:         -48.782d {-48d 46' 53"} (J2000),
                 -48.727d {-48d 43' 36"} (current),
                 -48.932d {-48d 55' 55"} (1950)
GRB_DATE:        18234 TJD;   116 DOY;   18/04/26
GRB_TIME:        47915.15 SOD {13:18:35.15} UT
TRIGGER_INDEX:   20000
GRB_PHI:         149.08 [deg]
GRB_THETA:        16.70 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     64.000 [sec] 
SOLN_STATUS:     0x99D
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    5.86 [sigma]
LC_URL:          sw00829046000msb.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 26 09:36:02 EDT 2018