TDRSS lightcurve for Trigger=655452
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sun 13 Sep 15 11:54:07 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 655452, Seg_Num: 0
GRB_RA: 256.042d {+17h 04m 10s} (J2000),
256.309d {+17h 05m 14s} (current),
255.190d {+17h 00m 46s} (1950)
GRB_DEC: -38.078d {-38d 04' 40"} (J2000),
-38.099d {-38d 05' 55"} (current),
-38.009d {-38d 00' 31"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 0 [cnts] Image_Peak=4954 [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: 17278 TJD; 256 DOY; 15/09/13
GRB_TIME: 42456.87 SOD {11:47:36.87} UT
GRB_PHI: 121.42 [deg]
GRB_THETA: 0.03 [deg]
SOLN_STATUS: 0x1000251D
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 19.15 [sigma]
MERIT_PARAMS: +0 +0 +100 +6 +1 +6 +0 +1 -3 +0
SUN_POSTN: 171.16d {+11h 24m 39s} +3.81d {+03d 48' 34"}
SUN_DIST: 88.54 [deg] Sun_angle= -5.7 [hr] (East of Sun)
MOON_POSTN: 173.08d {+11h 32m 20s} +2.19d {+02d 11' 19"}
MOON_DIST: 86.03 [deg]
MOON_ILLUM: 0 [%]
GAL_COORDS: 347.59, 2.00 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 258.65,-15.19 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS: SWIFT-BAT GRB Coordinates.
COMMENTS: This Notice was delayed by more than 60 sec past the end of the trigger integration interval;
COMMENTS: probably due to it occurring during a Malindi downlink session.
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=25451=(null) (probably an AT_Slot).
COMMENTS: This matches a source in the ground catalog: 4U_1700-377, delta=0.239 [deg].
COMMENTS: There is a bright star (mag=5.91) 5.84 arcmin from this position.
COMMENTS: This is not a GRB.
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sun 13 Sep 15 12:04:21 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 655452, Seg_Num: 0
GRB_RA: 256.042d {+17h 04m 10s} (J2000),
256.309d {+17h 05m 14s} (current),
255.190d {+17h 00m 46s} (1950)
GRB_DEC: -38.078d {-38d 04' 40"} (J2000),
-38.099d {-38d 05' 55"} (current),
-38.009d {-38d 00' 31"} (1950)
GRB_DATE: 17278 TJD; 256 DOY; 15/09/13
GRB_TIME: 42456.87 SOD {11:47:36.87} UT
TRIGGER_INDEX: 20000
GRB_PHI: 121.42 [deg]
GRB_THETA: 0.03 [deg]
DELTA_TIME: 0.00 [sec]
TRIGGER_DUR: 64.000 [sec]
SOLN_STATUS: 0x51D
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 19.15 [sigma]
LC_URL: sw00655452000msb.lc
GCN template for BAT paragraph
Click here!
At 11:47:36 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 150913 ***A*** (trigger=655452). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 256.042, -38.078 which is
RA(J2000) = 17h 04m 10s
Dec(J2000) = -38d 04' 40"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a [**double-peaked**]
structure with a duration of about TTT sec. The peak count rate
was ~1164 counts/sec (15-350 keV), at ~7 sec after the trigger.
Test version of draft template
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
Tilan's background subtracted TDRSS light curves
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
TDRSS extended lightcurve from T0-1 to T0+2
T50 and T90 calculation
******************************************
battblocks v1.18
------------------------------------------
Input Data: bat_raw_lc.fits
Output GTI: bb.gti
Events to Skip: 128 Changepoint log(prob) Prior: 6.000000
Internal Tick: 1.000000e-04 s
Lookback time: 0 s
Bkg. Subtract?: yes (for fluence/T50/T90 calculations)
------------------------------------------
Estimated T90 duration: 117.76 s +/- 2.98545 s
Estimated T50 duration: 65.536 s +/- 4.096 s
Estimated Peak Interval: MET 463837802.62399995 +/- 0.500000 s
Estimated background rate 1: 5610.789 near MET 463837670.272000 s
Estimated background rate 2: 5586.914 near MET 463837845.632000 s
Estimated total duration: 140.8 s (for data selection)
(from MET 463837692.544000 to MET 463837833.344000)
Estimated total fluence: 19281.666057 count
Created GTI with 3 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 256.042 -38.078 0.083
No match
Link to SIMBAD
Click here for the SIMBAD search!
Frank's UVOT result
Click here!
Frank's UVOT Blinking images
Click here!
Elevation angle of GRB/Sun at the ground telescope locations
GSFC, Greenbelt, Maryland
TimeUT Azimuth Elevation
Sun: 2015 9 13 12 275.665778 12.924948
Obj: 2015 9 13 12 272.237735 -75.556136
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2015 9 13 12 255.661562 -15.159189
Obj: 2015 9 13 12 58.956898 -75.778608
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2015 9 13 12 251.499747 -19.527899
Obj: 2015 9 13 12 68.635193 -71.964400
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2015 9 13 12 228.826145 -55.906733
Obj: 2015 9 13 12 56.748270 -35.360778
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2015 9 13 12 52.346252 -50.346659
Obj: 2015 9 13 12 63.696544 37.613437
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2015 9 13 12 121.001097 -31.590875
Obj: 2015 9 13 12 35.824578 4.979980
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2015 9 13 12 323.287353 60.062973
Obj: 2015 9 13 12 300.849841 -26.546229
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2015 9 13 12 256.509322 14.685925
Obj: 2015 9 13 12 340.045293 -17.913689
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger655452/tdrss_ql/
bat_raw_lc.fits : TDRSS FITS light curve from GCN
gcn_position.txt : GCN BAT position notice
ratelc_tdrss.qdp : QDP file of the TDRSS light curve
tdrss_lc.gif : GIF TDRSS light curve
sc_att.qdp : QDP file of the spacecraft attitude
sc_att.gif : GIF spacecraft attitude
bb.gti : Bayesian block GTI file (battblocks)
dur.gti : Duration GTI file (battblocks)
battblocks.log : Output log of battblocks
Plot creation:
Sun Sep 13 08:04:43 EDT 2015