TDRSS lightcurve for Trigger=1002103
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Mon 26 Oct 20 22:48:25 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1002103, Seg_Num: 0
GRB_RA: 196.664d {+13h 06m 39s} (J2000),
196.630d {+13h 06m 31s} (current),
196.772d {+13h 07m 05s} (1950)
GRB_DEC: +83.761d {+83d 45' 38"} (J2000),
+83.650d {+83d 38' 58"} (current),
+84.027d {+84d 01' 38"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 3764 [cnts] Image_Peak=136 [image_cnts]
TRIGGER_DUR: 1.024 [sec]
TRIGGER_INDEX: 149 E_range: 25-100 keV
BKG_INTEN: 23928 [cnts]
BKG_TIME: 81438.12 SOD {22:37:18.12} UT
BKG_DUR: 8 [sec]
GRB_DATE: 19148 TJD; 300 DOY; 20/10/26
GRB_TIME: 81454.18 SOD {22:37:34.18} UT
GRB_PHI: 21.83 [deg]
GRB_THETA: 34.25 [deg]
SOLN_STATUS: 0x20000083
RATE_SIGNIF: 12.04 [sigma]
IMAGE_SIGNIF: 6.67 [sigma]
MERIT_PARAMS: +1 +0 +0 +0 +2 -4 +0 +0 +11 +0
SUN_POSTN: 211.74d {+14h 06m 56s} -12.84d {-12d 50' 39"}
SUN_DIST: 96.71 [deg] Sun_angle= 1.0 [hr] (West of Sun)
MOON_POSTN: 346.38d {+23h 05m 32s} -11.37d {-11d 22' 13"}
MOON_DIST: 106.83 [deg]
MOON_ILLUM: 82 [%]
GAL_COORDS: 122.44, 33.35 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 105.85, 67.58 [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 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.
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Mon 26 Oct 20 23:01:36 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 1002103, Seg_Num: 0
GRB_RA: 196.664d {+13h 06m 39s} (J2000),
196.630d {+13h 06m 31s} (current),
196.772d {+13h 07m 05s} (1950)
GRB_DEC: +83.761d {+83d 45' 38"} (J2000),
+83.650d {+83d 38' 58"} (current),
+84.027d {+84d 01' 38"} (1950)
GRB_DATE: 19148 TJD; 300 DOY; 20/10/26
GRB_TIME: 81454.18 SOD {22:37:34.18} UT
TRIGGER_INDEX: 149
GRB_PHI: 21.83 [deg]
GRB_THETA: 34.25 [deg]
DELTA_TIME: -5.00 [sec]
TRIGGER_DUR: 1.024 [sec]
SOLN_STATUS: 0x83
RATE_SIGNIF: 12.04 [sigma]
IMAGE_SIGNIF: 6.67 [sigma]
LC_URL: sw01002103000msb.lc
GCN template for BAT paragraph
Click here!
At 22:37:34 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 201026 ***A*** (trigger=1002103). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 196.664, +83.761 which is
RA(J2000) = 13h 06m 39s
Dec(J2000) = +83d 45' 38"
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 ~2058 counts/sec (15-350 keV), at ~1 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: 102.016 s +/- 75.089 s
Estimated T50 duration: 78.848 s +/- 66.848 s
Estimated Peak Interval: MET 625444839.29600000 +/- 0.500000 s
Estimated background rate 1: 5792.500 near MET 625444658.400000 s
Estimated background rate 2: 5753.760 near MET 625444855.680000 s
Estimated total duration: 184.64 s (for data selection)
(from MET 625444660.800000 to MET 625444845.440000)
Estimated total fluence: 17385.172524 count
Created GTI with 12 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 196.664 83.761 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 196.664 83.761
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: 2020 10 26 23 80.951566 -9.351366
Obj: 2020 10 26 23 172.388108 36.891307
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2020 10 26 23 60.641352 19.053757
Obj: 2020 10 26 23 172.733730 33.331432
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2020 10 26 23 55.875428 22.470540
Obj: 2020 10 26 23 172.813971 35.620897
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2020 10 26 23 22.527017 54.849095
Obj: 2020 10 26 23 176.684699 25.367438
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2020 10 26 23 254.381651 46.929919
Obj: 2020 10 26 23 183.222599 -25.635285
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2020 10 26 23 299.201955 16.728733
Obj: 2020 10 26 23 185.651314 38.822951
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2020 10 26 23 114.100225 -58.455162
Obj: 2020 10 26 23 178.312444 22.553602
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2020 10 26 23 75.123513 0.065077
Obj: 2020 10 26 23 173.041876 -32.630325
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger1002103/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 Oct 26 19:02:23 EDT 2020