TDRSS lightcurve for Trigger=1192742
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 22:39:03 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1192742, Seg_Num: 0
GRB_RA: 262.110d {+17h 28m 26s} (J2000),
262.453d {+17h 29m 49s} (current),
261.386d {+17h 25m 33s} (1950)
GRB_DEC: -16.885d {-16d 53' 04"} (J2000),
-16.902d {-16d 54' 08"} (current),
-16.845d {-16d 50' 40"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 0 [cnts] Image_Peak=5327 [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: 20213 TJD; 269 DOY; 23/09/26
GRB_TIME: 81463.91 SOD {22:37:43.91} UT
GRB_PHI: 87.94 [deg]
GRB_THETA: 16.33 [deg]
SOLN_STATUS: 0x413
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 17.59 [sigma]
MERIT_PARAMS: +1 +0 +0 +6 +1 +5 +0 +1 -19 +0
SUN_POSTN: 183.29d {+12h 13m 09s} -1.42d {-01d 25' 26"}
SUN_DIST: 79.22 [deg] Sun_angle= -5.3 [hr] (East of Sun)
MOON_POSTN: 332.62d {+22h 10m 30s} -15.84d {-15d 50' 18"}
MOON_DIST: 66.95 [deg]
MOON_ILLUM: 91 [%]
GAL_COORDS: 8.15, 9.75 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 262.40, 6.35 [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 does not match any source in the ground catalog.
COMMENTS: This is a GRB.
COMMENTS: This trigger occurred at longitude,latitude = 222.74,-16.86 [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: Tue 26 Sep 23 22:42:33 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 1192740, Seg_Num: 0
GRB_RA: 245.078d {+16h 20m 19s} (J2000),
245.418d {+16h 21m 40s} (current),
244.365d {+16h 17m 28s} (1950)
GRB_DEC: -16.234d {-16d 14' 01"} (J2000),
-16.289d {-16d 17' 21"} (current),
-16.115d {-16d 06' 53"} (1950)
GRB_DATE: 20213 TJD; 269 DOY; 23/09/26
GRB_TIME: 81055.91 SOD {22:30:55.91} UT
TRIGGER_INDEX: 20000
GRB_PHI: -18.01 [deg]
GRB_THETA: 51.98 [deg]
DELTA_TIME: 0.00 [sec]
TRIGGER_DUR: 64.000 [sec]
SOLN_STATUS: 0x413
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 8.57 [sigma]
LC_URL: sw01192740000msb.lc
GCN template for BAT paragraph
Click here!
At 22:30:55 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 230926 ***A*** (trigger=1192742). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 245.078, -16.234 which is
RA(J2000) = 16h 20m 19s
Dec(J2000) = -16d 14' 01"
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 ~0 counts/sec (15-350 keV), at ~ 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
T50 and T90 calculation
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 245.078 -16.234 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 245.078 -16.234
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 14.597924 33.423447
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 22 333.743843 37.808214
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 22 327.923275 33.892004
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 22 294.353537 15.813481
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 22 301.361912 -16.394009
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 22 255.031157 -48.366879
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 66.760593 7.429713
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 22 125.456733 67.963729
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger1192742/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 18:43:03 EDT 2023