TDRSS lightcurve for Trigger=1347265
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Fri 05 Sep 25 02:10:57 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1347265, Seg_Num: 0
GRB_RA: 233.047d {+15h 32m 11s} (J2000),
233.375d {+15h 33m 30s} (current),
232.410d {+15h 29m 38s} (1950)
GRB_DEC: +0.777d {+00d 46' 39"} (J2000),
+0.692d {+00d 41' 30"} (current),
+0.946d {+00d 56' 46"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 13580 [cnts] Image_Peak=293 [image_cnts]
TRIGGER_DUR: 5.504 [sec]
TRIGGER_INDEX: 476 E_range: 25-100 keV
BKG_INTEN: 109417 [cnts]
BKG_TIME: 7723.72 SOD {02:08:43.72} UT
BKG_DUR: 48 [sec]
GRB_DATE: 20923 TJD; 248 DOY; 25/09/05
GRB_TIME: 7794.83 SOD {02:09:54.83} UT
GRB_PHI: -50.13 [deg]
GRB_THETA: 23.97 [deg]
SOLN_STATUS: 0x3
RATE_SIGNIF: 8.66 [sigma]
IMAGE_SIGNIF: 7.24 [sigma]
MERIT_PARAMS: +1 +0 +0 +2 +2 -3 +0 +0 -36 +0
SUN_POSTN: 164.13d {+10h 56m 31s} +6.76d {+06d 45' 36"}
SUN_DIST: 69.31 [deg] Sun_angle= -4.6 [hr] (East of Sun)
MOON_POSTN: 311.88d {+20h 47m 32s} -21.43d {-21d 25' 33"}
MOON_DIST: 79.57 [deg]
MOON_ILLUM: 91 [%]
GAL_COORDS: 5.41, 43.32 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 230.44, 19.29 [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: This is a GRB.
COMMENTS: This trigger occurred at longitude,latitude = 274.16,19.18 [deg].
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Fri 05 Sep 25 02:26:46 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 1347179, Seg_Num: 0
GRB_RA: 84.358d {+05h 37m 26s} (J2000),
84.696d {+05h 38m 47s} (current),
83.700d {+05h 34m 48s} (1950)
GRB_DEC: +3.584d {+03d 35' 04"} (J2000),
+3.598d {+03d 35' 53"} (current),
+3.556d {+03d 33' 20"} (1950)
GRB_DATE: 20922 TJD; 247 DOY; 25/09/04
GRB_TIME: 63423.05 SOD {17:37:03.05} UT
TRIGGER_INDEX: 146
GRB_PHI: -6.64 [deg]
GRB_THETA: 13.62 [deg]
DELTA_TIME: -11.00 [sec]
TRIGGER_DUR: 1.024 [sec]
SOLN_STATUS: 0x3
RATE_SIGNIF: 20.42 [sigma]
IMAGE_SIGNIF: 8.77 [sigma]
LC_URL: sw01347179000msb.lc
GCN template for BAT paragraph
Click here!
At 17:37:03 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 250904 ***A*** (trigger=1347265). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 84.358, +3.584 which is
RA(J2000) = 05h 37m 26s
Dec(J2000) = +03d 35' 04"
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
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
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 84.358 3.584 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 84.358 3.584
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: 2025 9 5 2 125.425844 -26.872885
Obj: 2025 9 5 2 222.682058 -38.025048
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2025 9 5 2 100.464280 -4.011862
Obj: 2025 9 5 2 177.175111 -54.702805
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2025 9 5 2 97.265783 1.229245
Obj: 2025 9 5 2 167.487525 -52.375619
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2025 9 5 2 83.942608 35.732975
Obj: 2025 9 5 2 112.150899 -38.951417
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2025 9 5 2 181.802431 51.913251
Obj: 2025 9 5 2 99.217563 8.021239
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2025 9 5 2 325.323113 57.860591
Obj: 2025 9 5 2 76.215228 25.173222
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2025 9 5 2 199.787972 -52.691408
Obj: 2025 9 5 2 267.498783 2.887679
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2025 9 5 2 67.115748 -44.827696
Obj: 2025 9 5 2 298.930979 -45.099398
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger1347265/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:
Thu Sep 4 22:27:03 EDT 2025