TDRSS lightcurve for Trigger=504101
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Mon 26 Sep 11 20:12:47 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 504101, Seg_Num: 0
GRB_RA: 258.161d {+17h 12m 39s} (J2000),
258.361d {+17h 13m 27s} (current),
257.311d {+17h 09m 15s} (1950)
GRB_DEC: -37.649d {-37d 38' 56"} (J2000),
-37.662d {-37d 39' 44"} (current),
-37.590d {-37d 35' 23"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 0 [cnts] Image_Peak=4739 [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: 15830 TJD; 269 DOY; 11/09/26
GRB_TIME: 72688.59 SOD {20:11:28.59} UT
GRB_PHI: -48.04 [deg]
GRB_THETA: 8.33 [deg]
SOLN_STATUS: 0x11D
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 16.08 [sigma]
MERIT_PARAMS: +0 +0 +95 +6 +1 +4 +0 +1 -21 +0
SUN_POSTN: 183.11d {+12h 12m 27s} -1.35d {-01d 20' 51"}
SUN_DIST: 77.53 [deg] Sun_angle= -5.0 [hr] (East of Sun)
MOON_POSTN: 172.84d {+11h 31m 21s} -2.29d {-02d 17' 41"}
MOON_DIST: 85.06 [deg]
MOON_ILLUM: 1 [%]
GAL_COORDS: 348.94, 0.91 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 260.34,-14.61 [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=10582=SAX1712.6-3739, delta=0.024 [deg].
COMMENTS: This matches a source in the ground catalog: SAX1712.6-3739, delta=0.024 [deg].
COMMENTS: This is not a GRB.
COMMENTS: This trigger occurred at longitude,latitude = 231.21,-18.65 [deg].
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Mon 26 Sep 11 20:29:21 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 504101, Seg_Num: 0
GRB_RA: 258.161d {+17h 12m 39s} (J2000),
258.361d {+17h 13m 27s} (current),
257.311d {+17h 09m 15s} (1950)
GRB_DEC: -37.649d {-37d 38' 56"} (J2000),
-37.662d {-37d 39' 44"} (current),
-37.590d {-37d 35' 23"} (1950)
GRB_DATE: 15830 TJD; 269 DOY; 11/09/26
GRB_TIME: 72688.59 SOD {20:11:28.59} UT
TRIGGER_INDEX: 20000
GRB_PHI: -48.04 [deg]
GRB_THETA: 8.33 [deg]
DELTA_TIME: 0.00 [sec]
TRIGGER_DUR: 64.000 [sec]
SOLN_STATUS: 0x11D
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 16.08 [sigma]
LC_URL: sw00504101000msb.lc
GCN template for BAT paragraph
Click here!
At 20:11:28 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 110926 ***A*** (trigger=504101). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 258.161, -37.649 which is
RA(J2000) = 17h 12m 39s
Dec(J2000) = -37d 38' 56"
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 ~1335 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: 45.056 s +/- 4.096 s
Estimated T50 duration: 20.48 s +/- 4.096 s
Estimated Peak Interval: MET 338760806.14399993 +/- 0.500000 s
Estimated background rate 1: 8500.302 near MET 338760729.856000 s
Estimated background rate 2: 8441.650 near MET 338760859.392000 s
Estimated total duration: 49.152 s (for data selection)
(from MET 338760787.712000 to MET 338760836.864000)
Estimated total fluence: 7873.702172 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 258.161 -37.649 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 26 20 56.577248 32.418925
Obj: 2011 9 26 20 336.066560 8.342305
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2011 9 26 20 19.252491 55.396674
Obj: 2011 9 26 20 314.387445 -1.787296
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2011 9 26 20 8.398531 54.983997
Obj: 2011 9 26 20 311.329578 -6.618187
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2011 9 26 20 298.668710 50.650146
Obj: 2011 9 26 20 303.062066 -26.798096
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2011 9 26 20 270.767657 1.295318
Obj: 2011 9 26 20 347.037931 -19.585276
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2011 9 26 20 262.000938 -13.859701
Obj: 2011 9 26 20 15.334663 -86.617365
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2011 9 26 20 95.530522 -12.757858
Obj: 2011 9 26 20 23.488829 18.373998
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2011 9 26 20 111.171877 33.921992
Obj: 2011 9 26 20 296.447915 68.422119
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/raid2/prebascript/trigger504101/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:
Mon Sep 26 16:29:44 EDT 2011