TDRSS lightcurve for Trigger=1192737
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Tue 26 Sep 23 22:21:45 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1192737, Seg_Num: 0
GRB_RA: 83.771d {+05h 35m 05s} (J2000),
84.129d {+05h 36m 31s} (current),
83.016d {+05h 32m 04s} (1950)
GRB_DEC: +22.502d {+22d 30' 07"} (J2000),
+22.516d {+22d 30' 57"} (current),
+22.470d {+22d 28' 12"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 0 [cnts] Image_Peak=5656 [image_cnts]
TRIGGER_DUR: 104.000 [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: 20213 TJD; 269 DOY; 23/09/26
GRB_TIME: 79911.91 SOD {22:11:51.91} UT
GRB_PHI: -169.05 [deg]
GRB_THETA: 0.25 [deg]
SOLN_STATUS: 0x413
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 17.53 [sigma]
MERIT_PARAMS: +1 +0 +0 +7 +1 +5 +0 +1 +16 +0
SUN_POSTN: 183.28d {+12h 13m 07s} -1.42d {-01d 25' 10"}
SUN_DIST: 98.99 [deg] Sun_angle= 6.6 [hr] (West of Sun)
MOON_POSTN: 332.45d {+22h 09m 49s} -15.91d {-15d 54' 37"}
MOON_DIST: 115.66 [deg]
MOON_ILLUM: 91 [%]
GAL_COORDS: 184.21, -5.42 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 84.25, -0.81 [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 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 does not match any source in the ground catalog.
COMMENTS: This is a GRB.
COMMENTS: This trigger occurred at longitude,latitude = 130.39,-9.47 [deg].
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Tue 26 Sep 23 22:31:20 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 4456460, Seg_Num: 0
GRB_RA: 83.771d {+05h 35m 05s} (J2000),
84.129d {+05h 36m 31s} (current),
83.016d {+05h 32m 04s} (1950)
GRB_DEC: +22.502d {+22d 30' 07"} (J2000),
+22.516d {+22d 30' 57"} (current),
+22.470d {+22d 28' 12"} (1950)
GRB_DATE: 20213 TJD; 269 DOY; 23/09/26
GRB_TIME: 79911.91 SOD {22:11:51.91} UT
TRIGGER_INDEX: 20000
GRB_PHI: -169.05 [deg]
GRB_THETA: 0.25 [deg]
DELTA_TIME: 31837.00 [sec]
TRIGGER_DUR: 104.000 [sec]
SOLN_STATUS: 0x413
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 0.00 [sigma]
LC_URL: sw01192737000msb.lc
GCN template for BAT paragraph
Click here!
At 22:11:51 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 230926 ***A*** (trigger=1192737). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 83.771, +22.502 which is
RA(J2000) = 05h 35m 05s
Dec(J2000) = +22d 30' 07"
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 ~828 counts/sec (15-350 keV), at ~2 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: 3518.906 near MET 717459184.000000 s
Estimated background rate 2: 3518.906 near MET 717459184.000000 s
Estimated total fluence: 0.000000 count
Created GTI with 1 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 83.771 22.502 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 83.771 22.502
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 9 26 22 79.194076 10.804445
Obj: 2023 9 26 22 173.647910 -28.251952
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2023 9 26 22 57.354109 39.090421
Obj: 2023 9 26 22 139.547745 -23.643483
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2023 9 26 22 50.421693 42.188978
Obj: 2023 9 26 22 135.319029 -19.004804
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2023 9 26 22 349.676044 68.413142
Obj: 2023 9 26 22 112.951969 2.759771
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2023 9 26 22 254.123739 26.691931
Obj: 2023 9 26 22 139.567172 23.972756
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2023 9 26 22 279.277834 10.770427
Obj: 2023 9 26 22 65.871074 66.408571
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2023 9 26 22 113.330944 -38.239558
Obj: 2023 9 26 22 230.694435 -17.723201
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2023 9 26 22 93.492982 8.698943
Obj: 2023 9 26 22 1.071485 -82.183385
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger1192737/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:
Tue Sep 26 18:31:42 EDT 2023