TDRSS lightcurve for Trigger=1252402
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Wed 04 Sep 24 16:05:13 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1252402, Seg_Num: 0
GRB_RA: 136.440d {+09h 05m 46s} (J2000),
136.700d {+09h 06m 48s} (current),
135.913d {+09h 03m 39s} (1950)
GRB_DEC: -30.506d {-30d 30' 22"} (J2000),
-30.606d {-30d 36' 21"} (current),
-30.306d {-30d 18' 19"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 19893 [cnts] Image_Peak=580 [image_cnts]
TRIGGER_DUR: 8.192 [sec]
TRIGGER_INDEX: 334 E_range: 25-100 keV
BKG_INTEN: 136122 [cnts]
BKG_TIME: 57765.88 SOD {16:02:45.88} UT
BKG_DUR: 64 [sec]
GRB_DATE: 20557 TJD; 248 DOY; 24/09/04
GRB_TIME: 57859.32 SOD {16:04:19.32} UT
GRB_PHI: -155.11 [deg]
GRB_THETA: 15.83 [deg]
SOLN_STATUS: 0x3
RATE_SIGNIF: 14.42 [sigma]
IMAGE_SIGNIF: 10.20 [sigma]
MERIT_PARAMS: +1 +0 +0 +3 +2 +0 -100 +0 -69 +0
SUN_POSTN: 163.97d {+10h 55m 52s} +6.83d {+06d 49' 34"}
SUN_DIST: 45.64 [deg] Sun_angle= 1.8 [hr] (West of Sun)
MOON_POSTN: 180.22d {+12h 00m 52s} +0.51d {+00d 30' 49"}
MOON_DIST: 51.72 [deg]
MOON_ILLUM: 2 [%]
GAL_COORDS: 255.92, 11.11 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 151.23,-44.58 [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 = 288.93,-1.23 [deg].
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Wed 04 Sep 24 16:21:55 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 1252402, Seg_Num: 0
GRB_RA: 136.440d {+09h 05m 46s} (J2000),
136.700d {+09h 06m 48s} (current),
135.913d {+09h 03m 39s} (1950)
GRB_DEC: -30.506d {-30d 30' 22"} (J2000),
-30.606d {-30d 36' 21"} (current),
-30.306d {-30d 18' 19"} (1950)
GRB_DATE: 20557 TJD; 248 DOY; 24/09/04
GRB_TIME: 57859.32 SOD {16:04:19.32} UT
TRIGGER_INDEX: 334
GRB_PHI: -155.11 [deg]
GRB_THETA: 15.83 [deg]
DELTA_TIME: -63.00 [sec]
TRIGGER_DUR: 8.192 [sec]
SOLN_STATUS: 0x3
RATE_SIGNIF: 14.42 [sigma]
IMAGE_SIGNIF: 10.20 [sigma]
LC_URL: sw01252402000msb.lc
GCN template for BAT paragraph
Click here!
At 16:04:19 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 240904 ***A*** (trigger=1252402). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 136.440, -30.506 which is
RA(J2000) = 09h 05m 46s
Dec(J2000) = -30d 30' 22"
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 ~3466 counts/sec (15-350 keV), at ~183 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
******************************************
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 T90 duration: 177.92 s +/- 37.1875 s
Estimated T50 duration: 177.92 s +/- 84.2923 s
Estimated Peak Interval: MET 747158694.07999992 +/- 0.500000 s
Estimated background rate 1: 4232.401 near MET 747158680.704000 s
Estimated background rate 2: 7269.409 near MET 747158874.624000 s
Estimated total duration: 177.92 s (for data selection)
(from MET 747158692.608000 to MET 747158870.528000)
Estimated total fluence: -159747.378071 count
Created GTI with 13 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 136.440 -30.506 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 136.440 -30.506
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: 2024 9 4 16 329.987313 54.307466
Obj: 2024 9 4 16 9.308166 19.713329
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2024 9 4 16 286.338126 36.355355
Obj: 2024 9 4 16 337.689470 23.708469
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2024 9 4 16 283.331519 31.050556
Obj: 2024 9 4 16 332.904192 20.084948
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2024 9 4 16 261.645688 -3.010595
Obj: 2024 9 4 16 306.236128 7.164243
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2024 9 4 16 306.132589 -53.615309
Obj: 2024 9 4 16 313.748667 -8.398919
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2024 9 4 16 198.053731 -47.197596
Obj: 2024 9 4 16 274.691081 -56.683899
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2024 9 4 16 69.259581 44.797994
Obj: 2024 9 4 16 53.585769 1.292789
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2024 9 4 16 197.946329 51.296193
Obj: 2024 9 4 16 84.794637 76.134763
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger1252402/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 Sep 4 12:22:42 EDT 2024