TDRSS lightcurve for Trigger=1253910
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Thu 12 Sep 24 01:46:52 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1253910, Seg_Num: 0
GRB_RA: 124.633d {+08h 18m 32s} (J2000),
125.026d {+08h 20m 06s} (current),
123.837d {+08h 15m 21s} (1950)
GRB_DEC: +33.995d {+33d 59' 42"} (J2000),
+33.916d {+33d 54' 59"} (current),
+34.152d {+34d 09' 06"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 1479 [cnts] Image_Peak=111 [image_cnts]
TRIGGER_DUR: 0.512 [sec]
TRIGGER_INDEX: 124 E_range: 25-100 keV
BKG_INTEN: 16327 [cnts]
BKG_TIME: 6381.84 SOD {01:46:21.84} UT
BKG_DUR: 8 [sec]
GRB_DATE: 20565 TJD; 256 DOY; 24/09/12
GRB_TIME: 6399.18 SOD {01:46:39.18} UT
GRB_PHI: -165.32 [deg]
GRB_THETA: 29.08 [deg]
SOLN_STATUS: 0x20000003
RATE_SIGNIF: 13.00 [sigma]
IMAGE_SIGNIF: 7.78 [sigma]
MERIT_PARAMS: +1 +0 +0 -1 +2 -2 +0 +0 -61 +0
SUN_POSTN: 170.63d {+11h 22m 30s} +4.04d {+04d 02' 18"}
SUN_DIST: 51.80 [deg] Sun_angle= 3.0 [hr] (West of Sun)
MOON_POSTN: 269.39d {+17h 57m 35s} -28.71d {-28d 42' 39"}
MOON_DIST: 149.27 [deg]
MOON_ILLUM: 58 [%]
GAL_COORDS: 188.03, 31.92 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 119.05, 13.98 [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 = 76.76,0.94 [deg].
COMMENTS:
COMMENTS: NOTE: This BAT event is temporally(1.0<100sec) coincident with the FERMI_GBM event (trignum=747798405).
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Thu 12 Sep 24 02:04:21 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 1253910, Seg_Num: 0
GRB_RA: 124.633d {+08h 18m 32s} (J2000),
125.026d {+08h 20m 06s} (current),
123.837d {+08h 15m 21s} (1950)
GRB_DEC: +33.995d {+33d 59' 42"} (J2000),
+33.916d {+33d 54' 59"} (current),
+34.152d {+34d 09' 06"} (1950)
GRB_DATE: 20565 TJD; 256 DOY; 24/09/12
GRB_TIME: 6399.18 SOD {01:46:39.18} UT
TRIGGER_INDEX: 124
GRB_PHI: -165.32 [deg]
GRB_THETA: 29.08 [deg]
DELTA_TIME: 25.00 [sec]
TRIGGER_DUR: 0.512 [sec]
SOLN_STATUS: 0x3
RATE_SIGNIF: 13.00 [sigma]
IMAGE_SIGNIF: 7.78 [sigma]
LC_URL: sw01253910000msb.lc
GCN template for BAT paragraph
Click here!
At 01:46:39 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 240912 ***A*** (trigger=1253910). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 124.633, +33.995 which is
RA(J2000) = 08h 18m 32s
Dec(J2000) = +33d 59' 42"
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 ~17388 counts/sec (15-350 keV), at ~69 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: 86.784 s +/- 2.90196 s
Estimated T50 duration: 20.48 s +/- 4.096 s
Estimated Peak Interval: MET 747798502.78399992 +/- 0.500000 s
Estimated background rate 1: 3952.100 near MET 747798419.840000 s
Estimated background rate 2: 3939.964 near MET 747798596.992000 s
Estimated total duration: 144.384 s (for data selection)
(from MET 747798430.080000 to MET 747798574.464000)
Estimated total fluence: 535049.562047 count
Created GTI with 27 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 124.633 33.995 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 124.633 33.995
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 12 2 123.983206 -29.365925
Obj: 2024 9 12 2 179.281921 -17.111092
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2024 9 12 2 98.491519 -6.005794
Obj: 2024 9 12 2 150.351455 -16.687864
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2024 9 12 2 95.334019 -0.797361
Obj: 2024 9 12 2 146.240559 -12.619457
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2024 9 12 2 81.087869 34.192877
Obj: 2024 9 12 2 125.256227 2.593213
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2024 9 12 2 180.848458 54.655788
Obj: 2024 9 12 2 143.019425 12.122929
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2024 9 12 2 328.593658 55.706418
Obj: 2024 9 12 2 96.960277 66.470403
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2024 9 12 2 202.254792 -55.082798
Obj: 2024 9 12 2 225.219335 -6.655069
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2024 9 12 2 63.579133 -43.639357
Obj: 2024 9 12 2 228.865694 -84.412710
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger1253910/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 11 22:04:43 EDT 2024