TDRSS lightcurve for Trigger=1185685
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Wed 16 Aug 23 19:12:01 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1185685, Seg_Num: 0
GRB_RA: 299.777d {+19h 59m 06s} (J2000),
299.998d {+20h 00m 00s} (current),
299.307d {+19h 57m 14s} (1950)
GRB_DEC: +35.341d {+35d 20' 27"} (J2000),
+35.406d {+35d 24' 23"} (current),
+35.204d {+35d 12' 13"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 0 [cnts] Image_Peak=3424 [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: 20172 TJD; 228 DOY; 23/08/16
GRB_TIME: 69048.16 SOD {19:10:48.16} UT
GRB_PHI: 167.72 [deg]
GRB_THETA: 23.07 [deg]
SOLN_STATUS: 0x513
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 14.25 [sigma]
MERIT_PARAMS: +1 +0 +0 +6 +1 +3 +0 +1 +57 +0
SUN_POSTN: 145.99d {+09h 43m 58s} +13.63d {+13d 37' 42"}
SUN_DIST: 125.13 [deg] Sun_angle= -10.3 [hr] (East of Sun)
MOON_POSTN: 151.80d {+10h 07m 13s} +16.17d {+16d 10' 12"}
MOON_DIST: 120.26 [deg]
MOON_ILLUM: 0 [%]
GAL_COORDS: 71.53, 3.01 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 314.00, 54.33 [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 does not match any source in the on-board catalog.
COMMENTS: This matches a source in the ground catalog: Cyg X-1, delta=0.206 [deg].
COMMENTS: This is not a GRB.
COMMENTS: This trigger occurred at longitude,latitude = 32.63,20.48 [deg].
COMMENTS:
COMMENTS: This trigger occured while the StarTracker had lost lock, so it is possibly bogus.
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Wed 16 Aug 23 19:15:48 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 1185685, Seg_Num: 0
GRB_RA: 299.777d {+19h 59m 06s} (J2000),
299.998d {+20h 00m 00s} (current),
299.307d {+19h 57m 14s} (1950)
GRB_DEC: +35.341d {+35d 20' 27"} (J2000),
+35.406d {+35d 24' 23"} (current),
+35.204d {+35d 12' 13"} (1950)
GRB_DATE: 20172 TJD; 228 DOY; 23/08/16
GRB_TIME: 69048.16 SOD {19:10:48.16} UT
TRIGGER_INDEX: 20000
GRB_PHI: 167.72 [deg]
GRB_THETA: 23.07 [deg]
DELTA_TIME: 0.00 [sec]
TRIGGER_DUR: 64.000 [sec]
SOLN_STATUS: 0x513
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 14.25 [sigma]
LC_URL: sw01185685000msb.lc
GCN template for BAT paragraph
Click here!
At 19:10:48 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 230816 ***A*** (trigger=1185685). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 299.777, +35.341 which is
RA(J2000) = 19h 59m 06s
Dec(J2000) = +35d 20' 27"
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 ~1265 counts/sec (15-350 keV), at ~7 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
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 background rate 1: 4820.456 near MET 713905936.384000 s
Estimated background rate 2: 4910.299 near MET 713906041.344000 s
Estimated total fluence: 0.000000 count
Created GTI with 2 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 299.777 35.341 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 299.777 35.341
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: 2023 8 16 19 50.036363 55.461446
Obj: 2023 8 16 19 220.323375 -1.217506
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2023 8 16 19 337.579110 70.685349
Obj: 2023 8 16 19 196.081105 -20.720401
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2023 8 16 19 325.020921 66.785739
Obj: 2023 8 16 19 190.884963 -20.277210
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2023 8 16 19 268.587905 39.937635
Obj: 2023 8 16 19 155.723665 -29.520481
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2023 8 16 19 266.933682 -21.885702
Obj: 2023 8 16 19 118.222080 -23.842554
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2023 8 16 19 238.011690 -18.491715
Obj: 2023 8 16 19 117.101112 24.955546
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2023 8 16 19 99.972025 10.308017
Obj: 2023 8 16 19 244.353480 32.723170
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2023 8 16 19 139.831636 36.040123
Obj: 2023 8 16 19 247.718515 -41.390573
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger1185685/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 Aug 16 15:18:22 EDT 2023