TDRSS lightcurve for Trigger=927825
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Fri 04 Oct 19 18:07:18 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 927825, Seg_Num: 0
GRB_RA: 31.721d {+02h 06m 53s} (J2000),
31.931d {+02h 07m 43s} (current),
31.190d {+02h 04m 46s} (1950)
GRB_DEC: -36.932d {-36d 55' 53"} (J2000),
-36.838d {-36d 50' 16"} (current),
-37.169d {-37d 10' 08"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 537 [cnts] Image_Peak=71 [image_cnts]
TRIGGER_DUR: 0.064 [sec]
TRIGGER_INDEX: 10419 E_range: 25-100 keV
BKG_INTEN: 19446 [cnts]
BKG_TIME: 65208.30 SOD {18:06:48.30} UT
BKG_DUR: 8 [sec]
GRB_DATE: 18760 TJD; 277 DOY; 19/10/04
GRB_TIME: 65222.70 SOD {18:07:02.70} UT
GRB_PHI: 117.79 [deg]
GRB_THETA: 35.98 [deg]
SOLN_STATUS: 0x3
RATE_SIGNIF: 32.83 [sigma]
IMAGE_SIGNIF: 9.12 [sigma]
MERIT_PARAMS: +1 +0 +0 -4 +2 +0 +0 +0 +69 +0
SUN_POSTN: 190.32d {+12h 41m 18s} -4.44d {-04d 26' 29"}
SUN_DIST: 134.06 [deg] Sun_angle= 10.6 [hr] (West of Sun)
MOON_POSTN: 270.38d {+18h 01m 32s} -22.24d {-22d 14' 27"}
MOON_DIST: 99.24 [deg]
MOON_ILLUM: 41 [%]
GAL_COORDS: 249.23,-71.30 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 12.17,-45.93 [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: This trigger occurred at longitude,latitude = 105.13,3.12 [deg].
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Fri 04 Oct 19 18:26:58 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 927825, Seg_Num: 0
GRB_RA: 31.721d {+02h 06m 53s} (J2000),
31.931d {+02h 07m 43s} (current),
31.190d {+02h 04m 46s} (1950)
GRB_DEC: -36.932d {-36d 55' 53"} (J2000),
-36.838d {-36d 50' 16"} (current),
-37.169d {-37d 10' 08"} (1950)
GRB_DATE: 18760 TJD; 277 DOY; 19/10/04
GRB_TIME: 65222.86 SOD {18:07:02.86} UT
TRIGGER_INDEX: 10419
GRB_PHI: 117.79 [deg]
GRB_THETA: 35.98 [deg]
DELTA_TIME: -14.00 [sec]
TRIGGER_DUR: 0.064 [sec]
SOLN_STATUS: 0x3
RATE_SIGNIF: 32.83 [sigma]
IMAGE_SIGNIF: 9.12 [sigma]
LC_URL: sw00927825000msb.lc
GCN template for BAT paragraph
Click here!
At 18:07:02 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 191004 ***A*** (trigger=927825). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 31.721, -36.932 which is
RA(J2000) = 02h 06m 53s
Dec(J2000) = -36d 55' 53"
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 ~8062 counts/sec (15-350 keV), at ~0 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: 2.56 s +/- 0.128 s
Estimated T50 duration: 1.92 s +/- 0.128 s
Estimated Peak Interval: MET 591905246.91199994 +/- 0.500000 s
Estimated background rate 1: 4754.336 near MET 591905234.048000 s
Estimated background rate 2: 4758.397 near MET 591905340.800000 s
Estimated total duration: 3.584 s (for data selection)
(from MET 591905245.696000 to MET 591905249.280000)
Estimated total fluence: 8347.999433 count
Created GTI with 10 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 31.721 -36.932 0.083
No match
Search for this GRB position to the source locations in BAT transient monitor (search radius within 12 arcmin)
python compare_catalog.py 31.721 -36.932
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: 2019 10 4 18 21.758114 44.244154
Obj: 2019 10 4 18 112.062880 -84.678904
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2019 10 4 18 330.565519 49.755060
Obj: 2019 10 4 18 69.896833 -56.671092
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2019 10 4 18 323.679319 45.612965
Obj: 2019 10 4 18 71.244164 -52.465207
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2019 10 4 18 284.239515 23.381646
Obj: 2019 10 4 18 55.921681 -15.836442
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2019 10 4 18 289.743483 -21.610226
Obj: 2019 10 4 18 69.352113 56.801506
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2019 10 4 18 244.431260 -38.912096
Obj: 2019 10 4 18 19.075509 15.530330
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2019 10 4 18 78.432991 11.336825
Obj: 2019 10 4 18 294.678680 -45.449665
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2019 10 4 18 137.944092 57.185754
Obj: 2019 10 4 18 0.233375 -22.858396
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger927825/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:
Fri Oct 4 14:27:24 EDT 2019