TDRSS lightcurve for Trigger=1059460
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Thu 08 Jul 21 02:25:58 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1059460, Seg_Num: 0
GRB_RA: 173.699d {+11h 34m 48s} (J2000),
173.960d {+11h 35m 50s} (current),
173.095d {+11h 32m 23s} (1950)
GRB_DEC: -49.187d {-49d 11' 11"} (J2000),
-49.306d {-49d 18' 20"} (current),
-48.910d {-48d 54' 36"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 2438 [cnts] Image_Peak=131 [image_cnts]
TRIGGER_DUR: 1.024 [sec]
TRIGGER_INDEX: 146 E_range: 25-100 keV
BKG_INTEN: 15895 [cnts]
BKG_TIME: 8724.66 SOD {02:25:24.66} UT
BKG_DUR: 8 [sec]
GRB_DATE: 19403 TJD; 189 DOY; 21/07/08
GRB_TIME: 8737.08 SOD {02:25:37.08} UT
GRB_PHI: 129.38 [deg]
GRB_THETA: 12.98 [deg]
SOLN_STATUS: 0x2083
RATE_SIGNIF: 8.42 [sigma]
IMAGE_SIGNIF: 6.82 [sigma]
MERIT_PARAMS: +1 +0 +0 +0 +2 -3 +0 +0 +4 +0
SUN_POSTN: 107.54d {+07h 10m 09s} +22.46d {+22d 27' 24"}
SUN_DIST: 92.78 [deg] Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN: 83.77d {+05h 35m 06s} +24.47d {+24d 28' 14"}
MOON_DIST: 108.42 [deg]
MOON_ILLUM: 4 [%]
GAL_COORDS: 290.27, 11.79 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 199.91,-46.30 [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: There is a bright star (mag=5.50) 3.34 arcmin from this position.
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 = 234.30,-2.56 [deg].
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Thu 08 Jul 21 02:42:48 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 1059460, Seg_Num: 0
GRB_RA: 173.699d {+11h 34m 48s} (J2000),
173.960d {+11h 35m 50s} (current),
173.095d {+11h 32m 23s} (1950)
GRB_DEC: -49.187d {-49d 11' 11"} (J2000),
-49.306d {-49d 18' 20"} (current),
-48.910d {-48d 54' 36"} (1950)
GRB_DATE: 19403 TJD; 189 DOY; 21/07/08
GRB_TIME: 8737.08 SOD {02:25:37.08} UT
TRIGGER_INDEX: 146
GRB_PHI: 129.38 [deg]
GRB_THETA: 12.98 [deg]
DELTA_TIME: 38.00 [sec]
TRIGGER_DUR: 1.024 [sec]
SOLN_STATUS: 0x2083
RATE_SIGNIF: 8.42 [sigma]
IMAGE_SIGNIF: 6.82 [sigma]
LC_URL: sw01059460000msb.lc
GCN template for BAT paragraph
Click here!
At 02:25:37 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 210708 ***A*** (trigger=1059460). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 173.699, -49.187 which is
RA(J2000) = 11h 34m 48s
Dec(J2000) = -49d 11' 11"
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 ~1320 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: 2.688 s +/- 0.286217 s
Estimated T50 duration: 1.28 s +/- 0.256 s
Estimated Peak Interval: MET 647403965.18400002 +/- 0.500000 s
Estimated background rate 1: 3928.090 near MET 647403952.384000 s
Estimated background rate 2: 3944.316 near MET 647404058.880000 s
Estimated total duration: 3.072 s (for data selection)
(from MET 647403963.968000 to MET 647403967.040000)
Estimated total fluence: 1345.682602 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 173.699 -49.187 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 173.699 -49.187
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 8 2 134.476221 -13.561467
Obj: 2021 7 8 2 37.731806 -15.246542
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2021 7 8 2 112.905432 5.713578
Obj: 2021 7 8 2 19.634211 4.421966
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2021 7 8 2 109.728198 11.018976
Obj: 2021 7 8 2 16.002614 4.380491
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2021 7 8 2 102.991450 40.943878
Obj: 2021 7 8 2 350.576172 19.762951
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2021 7 8 2 183.096002 36.154727
Obj: 2021 7 8 2 310.877904 36.284966
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2021 7 8 2 300.125788 69.286346
Obj: 2021 7 8 2 315.116703 -22.896687
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2021 7 8 2 192.127767 -37.847185
Obj: 2021 7 8 2 47.852784 -43.158282
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2021 7 8 2 88.823018 -51.160157
Obj: 2021 7 8 2 48.429569 34.571372
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger1059460/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:
Wed Jul 7 22:45:43 EDT 2021