TDRSS lightcurve for Trigger=1061687
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Mon 26 Jul 21 19:19:21 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1061687, Seg_Num: 0
GRB_RA: 193.342d {+12h 53m 22s} (J2000),
193.608d {+12h 54m 26s} (current),
192.723d {+12h 50m 54s} (1950)
GRB_DEC: +19.185d {+19d 11' 05"} (J2000),
+19.068d {+19d 04' 04"} (current),
+19.456d {+19d 27' 21"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 1308 [cnts] Image_Peak=88 [image_cnts]
TRIGGER_DUR: 0.512 [sec]
TRIGGER_INDEX: 124 E_range: 25-100 keV
BKG_INTEN: 13930 [cnts]
BKG_TIME: 69532.56 SOD {19:18:52.56} UT
BKG_DUR: 8 [sec]
GRB_DATE: 19421 TJD; 207 DOY; 21/07/26
GRB_TIME: 69543.69 SOD {19:19:03.69} UT
GRB_PHI: -13.10 [deg]
GRB_THETA: 2.08 [deg]
SOLN_STATUS: 0x83
RATE_SIGNIF: 13.45 [sigma]
IMAGE_SIGNIF: 6.71 [sigma]
MERIT_PARAMS: +1 +0 +0 -1 +2 -3 +0 +0 -45 +0
SUN_POSTN: 126.34d {+08h 25m 22s} +19.25d {+19d 14' 51"}
SUN_DIST: 63.09 [deg] Sun_angle= -4.5 [hr] (East of Sun)
MOON_POSTN: 342.50d {+22h 50m 00s} -12.92d {-12d 55' 03"}
MOON_DIST: 149.52 [deg]
MOON_ILLUM: 91 [%]
GAL_COORDS: 306.23, 82.04 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 184.31, 22.84 [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 = 246.56,15.63 [deg].
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Mon 26 Jul 21 19:40:15 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 1061687, Seg_Num: 0
GRB_RA: 193.342d {+12h 53m 22s} (J2000),
193.608d {+12h 54m 26s} (current),
192.723d {+12h 50m 54s} (1950)
GRB_DEC: +19.185d {+19d 11' 05"} (J2000),
+19.068d {+19d 04' 04"} (current),
+19.456d {+19d 27' 21"} (1950)
GRB_DATE: 19421 TJD; 207 DOY; 21/07/26
GRB_TIME: 69543.69 SOD {19:19:03.69} UT
TRIGGER_INDEX: 124
GRB_PHI: -13.10 [deg]
GRB_THETA: 2.08 [deg]
DELTA_TIME: 6.00 [sec]
TRIGGER_DUR: 0.512 [sec]
SOLN_STATUS: 0x83
RATE_SIGNIF: 13.45 [sigma]
IMAGE_SIGNIF: 6.71 [sigma]
LC_URL: sw01061687000msb.lc
GCN template for BAT paragraph
Click here!
At 19:19:03 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 210726 ***A*** (trigger=1061687). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 193.342, +19.185 which is
RA(J2000) = 12h 53m 22s
Dec(J2000) = +19d 11' 05"
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 ~2218 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: 120.32 s +/- 38.912 s
Estimated T50 duration: 62.592 s +/- 4.098 s
Estimated Peak Interval: MET 649019971.71199989 +/- 0.500000 s
Estimated background rate 1: 3547.415 near MET 649019959.232000 s
Estimated background rate 2: 3727.163 near MET 649020130.496000 s
Estimated total duration: 132.608 s (for data selection)
(from MET 649019971.264000 to MET 649020103.872000)
Estimated total fluence: 2070.958904 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 193.342 19.185 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 193.342 19.185
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: 2021 7 26 19 56.106103 60.101049
Obj: 2021 7 26 19 287.198438 49.216229
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2021 7 26 19 327.949691 75.618530
Obj: 2021 7 26 19 260.562240 22.038931
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2021 7 26 19 314.959400 71.152852
Obj: 2021 7 26 19 258.264065 17.384031
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2021 7 26 19 261.231263 40.606896
Obj: 2021 7 26 19 240.320453 -19.425239
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2021 7 26 19 261.772503 -24.963797
Obj: 2021 7 26 19 339.927497 -77.087978
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2021 7 26 19 233.439737 -14.923833
Obj: 2021 7 26 19 166.109728 -35.360700
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2021 7 26 19 104.852591 13.324921
Obj: 2021 7 26 19 62.966037 71.160329
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2021 7 26 19 144.130429 31.658245
Obj: 2021 7 26 19 219.203004 29.966414
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger1061687/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 Jul 26 15:41:04 EDT 2021