TDRSS lightcurve for Trigger=687522

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 25 May 16 09:25:32 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     687522,   Seg_Num: 0
GRB_RA:          149.443d {+09h 57m 46s} (J2000),
                 149.710d {+09h 58m 50s} (current),
                 148.624d {+09h 54m 30s} (1950)
GRB_DEC:         +51.180d {+51d 10' 49"} (J2000),
                 +51.101d {+51d 06' 05"} (current),
                 +51.419d {+51d 25' 08"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       1596 [cnts]    Image_Peak=94 [image_cnts]
TRIGGER_DUR:     0.512 [sec] 
TRIGGER_INDEX:   470     E_range: 25-100 keV
BKG_INTEN:       18539 [cnts]
BKG_TIME:        33895.68 SOD {09:24:55.68} UT
BKG_DUR:         8 [sec]
GRB_DATE:        17533 TJD;   146 DOY;   16/05/25
GRB_TIME:        33907.64 SOD {09:25:07.64} UT
GRB_PHI:         172.64 [deg]
GRB_THETA:        27.85 [deg]
SOLN_STATUS:     0x83
RATE_SIGNIF:     11.35 [sigma]
IMAGE_SIGNIF:    6.55 [sigma]
MERIT_PARAMS:     +1  +0  +0  -1  +2  -4  +0  +0 -31  +0 
SUN_POSTN:        62.64d {+04h 10m 34s}  +21.06d {+21d 03' 25"}
SUN_DIST:         71.97 [deg]   Sun_angle= -5.8 [hr] (East of Sun)
MOON_POSTN:      285.28d {+19h 01m 08s}  -18.13d {-18d 07' 44"}
MOON_DIST:       131.94 [deg]
MOON_ILLUM:      88 [%]
GAL_COORDS:      164.50, 49.51 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      131.87, 36.02 [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 = 57.23,18.37 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 25 May 16 09:55:42 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     687522,   Seg_Num: 0
GRB_RA:          149.443d {+09h 57m 46s} (J2000),
                 149.710d {+09h 58m 50s} (current),
                 148.624d {+09h 54m 30s} (1950)
GRB_DEC:         +51.180d {+51d 10' 49"} (J2000),
                 +51.101d {+51d 06' 05"} (current),
                 +51.419d {+51d 25' 08"} (1950)
GRB_DATE:        17533 TJD;   146 DOY;   16/05/25
GRB_TIME:        33907.64 SOD {09:25:07.64} UT
TRIGGER_INDEX:   470
GRB_PHI:         172.64 [deg]
GRB_THETA:        27.85 [deg]
DELTA_TIME:      -75.00 [sec]
TRIGGER_DUR:     0.512 [sec] 
SOLN_STATUS:     0x83
RATE_SIGNIF:     11.35 [sigma]
IMAGE_SIGNIF:    6.55 [sigma]
LC_URL:          sw00687522000msb.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:
Wed May 25 05:56:42 EDT 2016