TDRSS lightcurve for Trigger=639199

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 27 Apr 15 14:24:42 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     639199,   Seg_Num: 0
GRB_RA:          250.461d {+16h 41m 51s} (J2000),
                 250.740d {+16h 42m 57s} (current),
                 249.555d {+16h 38m 13s} (1950)
GRB_DEC:         -45.533d {-45d 31' 57"} (J2000),
                 -45.561d {-45d 33' 39"} (current),
                 -45.438d {-45d 26' 15"} (1950)
GRB_ERROR:       4.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=2796 [image_cnts]
TRIGGER_DUR:     376.000 [sec]   (=6.3 [min])
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:        17139 TJD;   117 DOY;   15/04/27
GRB_TIME:        51482.49 SOD {14:18:02.49} UT
GRB_PHI:          11.90 [deg]
GRB_THETA:        18.39 [deg]
SOLN_STATUS:     0x99D
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    5.80 [sigma]
MERIT_PARAMS:     +0  +0 +123  +7  +1  -5  +0  +1 +72  +1 
SUN_POSTN:        34.67d {+02h 18m 42s}  +13.85d {+13d 51' 16"}
SUN_DIST:        136.09 [deg]   Sun_angle= 9.6 [hr] (West of Sun)
MOON_POSTN:      145.76d {+09h 43m 03s}   +9.72d {+09d 43' 11"}
MOON_DIST:       107.39 [deg]
MOON_ILLUM:      65 [%]
GAL_COORDS:      339.19,  0.49 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      255.25,-23.09 [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 matches a source in the on-board catalog: Num=10632=IGR16418-4532,   delta=0.008 [deg].  
COMMENTS:        This matches a source in the ground catalog: IGRJ16418-4532,   delta=0.007 [deg].  
COMMENTS:        This is not a GRB.  
COMMENTS:           
COMMENTS:        The IMAGE_SIGNIF is VERY LOW, this is very likely not real.  
COMMENTS:        This trigger occurred at longitude,latitude = 197.55,20.06 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 27 Apr 15 14:34:53 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     639199,   Seg_Num: 0
GRB_RA:          250.461d {+16h 41m 51s} (J2000),
                 250.740d {+16h 42m 57s} (current),
                 249.555d {+16h 38m 13s} (1950)
GRB_DEC:         -45.533d {-45d 31' 57"} (J2000),
                 -45.561d {-45d 33' 39"} (current),
                 -45.438d {-45d 26' 15"} (1950)
GRB_DATE:        17139 TJD;   117 DOY;   15/04/27
GRB_TIME:        51482.49 SOD {14:18:02.49} UT
TRIGGER_INDEX:   20000
GRB_PHI:          11.90 [deg]
GRB_THETA:        18.39 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     376.000 [sec]   (=6.3 [min])
SOLN_STATUS:     0x99D
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    5.80 [sigma]
LC_URL:          sw00639199000msb.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:
Mon Apr 27 10:35:03 EDT 2015