TDRSS lightcurve for Trigger=1187203
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Fri 25 Aug 23 20:21:46 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1187203, Seg_Num: 0
GRB_RA: 261.928d {+17h 27m 43s} (J2000),
262.269d {+17h 29m 05s} (current),
261.208d {+17h 24m 50s} (1950)
GRB_DEC: -16.206d {-16d 12' 19"} (J2000),
-16.224d {-16d 13' 24"} (current),
-16.165d {-16d 09' 52"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 0 [cnts] Image_Peak=5002 [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: 20181 TJD; 237 DOY; 23/08/25
GRB_TIME: 73232.10 SOD {20:20:32.10} UT
GRB_PHI: 169.37 [deg]
GRB_THETA: 49.20 [deg]
SOLN_STATUS: 0x10000013
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 18.92 [sigma]
MERIT_PARAMS: +1 +0 +0 +6 +1 +6 -5 +1 +33 +0
SUN_POSTN: 154.36d {+10h 17m 26s} +10.62d {+10d 37' 28"}
SUN_DIST: 109.98 [deg] Sun_angle= -7.2 [hr] (East of Sun)
MOON_POSTN: 259.05d {+17h 16m 12s} -27.30d {-27d 18' 10"}
MOON_DIST: 11.47 [deg]
MOON_ILLUM: 66 [%]
GAL_COORDS: 8.64, 10.26 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 262.19, 7.02 [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 = 345.58,14.87 [deg].
COMMENTS:
COMMENTS: NOTE: This BAT event is spatially(0.00<0.1deg) coincident with the SWIFT_BAT event (trignum=1187142).
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Fri 25 Aug 23 20:51:56 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 1187203, Seg_Num: 0
GRB_RA: 83.872d {+05h 35m 29s} (J2000),
84.229d {+05h 36m 55s} (current),
83.119d {+05h 32m 29s} (1950)
GRB_DEC: +22.215d {+22d 12' 52"} (J2000),
+22.228d {+22d 13' 41"} (current),
+22.183d {+22d 10' 59"} (1950)
GRB_DATE: 20181 TJD; 237 DOY; 23/08/25
GRB_TIME: 73232.10 SOD {20:20:32.10} UT
TRIGGER_INDEX: 20000
GRB_PHI: 133.47 [deg]
GRB_THETA: 11.25 [deg]
DELTA_TIME: 0.00 [sec]
TRIGGER_DUR:
GCN template for BAT paragraph
Click here!
At 20:20:32 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 230825 ***A*** (trigger=1187203). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 83.872, +22.215 which is
RA(J2000) = 05h 35m 29s
Dec(J2000) = +22d 12' 52"
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 83.872 22.215 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 83.872 22.215
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 25 20 64.407036 43.037970
Obj: 2023 8 25 20 120.970672 -1.981950
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2023 8 25 20 21.356252 67.638890
Obj: 2023 8 25 20 103.804099 21.036459
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2023 8 25 20 5.370922 67.181524
Obj: 2023 8 25 20 100.333023 26.319253
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2023 8 25 20 279.193865 53.678990
Obj: 2023 8 25 20 100.425911 58.556723
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2023 8 25 20 261.871965 -7.182764
Obj: 2023 8 25 20 204.098731 32.509238
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2023 8 25 20 250.547746 -8.893590
Obj: 2023 8 25 20 279.613891 54.262569
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2023 8 25 20 104.685391 -4.459587
Obj: 2023 8 25 20 169.624995 -38.349333
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2023 8 25 20 123.932823 28.289921
Obj: 2023 8 25 20 97.407519 -34.615124
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger1187203/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:
Fri Aug 25 16:52:22 EDT 2023