TDRSS lightcurve for Trigger=503926
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sat 24 Sep 11 09:04:13 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 503926, Seg_Num: 0
GRB_RA: 234.748d {+15h 39m 00s} (J2000),
235.020d {+15h 40m 05s} (current),
233.595d {+15h 34m 23s} (1950)
GRB_DEC: -66.308d {-66d 18' 29"} (J2000),
-66.346d {-66d 20' 44"} (current),
-66.145d {-66d 08' 42"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 13607 [cnts] Image_Peak=288 [image_cnts]
TRIGGER_DUR: 4.096 [sec]
TRIGGER_INDEX: 280 E_range: 15-25 keV
BKG_INTEN: 116515 [cnts]
BKG_TIME: 32544.60 SOD {09:02:24.60} UT
BKG_DUR: 40 [sec]
GRB_DATE: 15828 TJD; 267 DOY; 11/09/24
GRB_TIME: 32600.73 SOD {09:03:20.73} UT
GRB_PHI: -162.57 [deg]
GRB_THETA: 27.94 [deg]
SOLN_STATUS: 0x83
RATE_SIGNIF: 14.49 [sigma]
IMAGE_SIGNIF: 6.60 [sigma]
MERIT_PARAMS: +1 +0 +0 +2 +0 -4 +0 +1 -24 +0
SUN_POSTN: 180.90d {+12h 03m 35s} -0.39d {-00d 23' 16"}
SUN_DIST: 76.04 [deg] Sun_angle= -3.6 [hr] (East of Sun)
MOON_POSTN: 139.05d {+09h 16m 11s} +11.25d {+11d 14' 44"}
MOON_DIST: 102.68 [deg]
MOON_ILLUM: 13 [%]
GAL_COORDS: 318.68, -8.70 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 250.78,-45.21 [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 = 97.51,-8.95 [deg].
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sat 24 Sep 11 09:21:52 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 503926, Seg_Num: 0
GRB_RA: 234.748d {+15h 39m 00s} (J2000),
235.020d {+15h 40m 05s} (current),
233.595d {+15h 34m 23s} (1950)
GRB_DEC: -66.308d {-66d 18' 29"} (J2000),
-66.346d {-66d 20' 44"} (current),
-66.145d {-66d 08' 42"} (1950)
GRB_DATE: 15828 TJD; 267 DOY; 11/09/24
GRB_TIME: 32600.73 SOD {09:03:20.73} UT
TRIGGER_INDEX: 280
GRB_PHI: -162.57 [deg]
GRB_THETA: 27.94 [deg]
DELTA_TIME: -11.00 [sec]
TRIGGER_DUR: 4.096 [sec]
SOLN_STATUS: 0x83
RATE_SIGNIF: 14.49 [sigma]
IMAGE_SIGNIF: 6.60 [sigma]
LC_URL: sw00503926000msb.lc
GCN template for BAT paragraph
Click here!
At 09:03:20 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 110924 ***A*** (trigger=503926). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 234.748, -66.308 which is
RA(J2000) = 15h 39m 00s
Dec(J2000) = -66d 18' 29"
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 ~2561 counts/sec (15-350 keV), at ~0 sec after the trigger.
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: 41.6 s +/- 2.89772 s
Estimated T50 duration: 32.384 s +/- 0.96 s
Estimated Peak Interval: MET 338547852.60799998 +/- 0.500000 s
Estimated background rate 1: 8016.283 near MET 338547796.160000 s
Estimated background rate 2: 7158.032 near MET 338547952.960000 s
Estimated total duration: 103.68 s (for data selection)
(from MET 338547808.320000 to MET 338547912.000000)
Estimated total fluence: 9428.864375 count
Created GTI with 6 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 234.748 -66.308 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: 2011 9 24 9 250.026132 -23.473254
Obj: 2011 9 24 9 355.265451 -62.499011
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2011 9 24 9 222.690816 -50.476471
Obj: 2011 9 24 9 17.879885 -51.379149
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2011 9 24 9 213.209554 -52.268853
Obj: 2011 9 24 9 21.297319 -51.256242
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2011 9 24 9 133.992947 -63.101133
Obj: 2011 9 24 9 25.033623 -24.889310
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2011 9 24 9 81.451456 -13.051842
Obj: 2011 9 24 9 25.657664 43.570144
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2011 9 24 9 89.062658 0.642240
Obj: 2011 9 24 9 13.659177 -14.256623
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2011 9 24 9 285.045983 24.554127
Obj: 2011 9 24 9 333.302123 -36.350051
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2011 9 24 9 283.326271 -20.814233
Obj: 2011 9 24 9 355.434748 7.036665
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/raid2/prebascript/trigger503926/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:
Sat Sep 24 05:22:23 EDT 2011