TDRSS lightcurve for Trigger=1247745
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Fri 09 Aug 24 08:30:42 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1247745, Seg_Num: 0
GRB_RA: 237.551d {+15h 50m 12s} (J2000),
237.871d {+15h 51m 29s} (current),
236.901d {+15h 47m 36s} (1950)
GRB_DEC: -2.321d {-02d 19' 15"} (J2000),
-2.394d {-02d 23' 38"} (current),
-2.170d {-02d 10' 12"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 3713 [cnts] Image_Peak=294 [image_cnts]
TRIGGER_DUR: 0.512 [sec]
TRIGGER_INDEX: 127 E_range: 50-350 keV
BKG_INTEN: 14170 [cnts]
BKG_TIME: 30614.04 SOD {08:30:14.04} UT
BKG_DUR: 8 [sec]
GRB_DATE: 20531 TJD; 222 DOY; 24/08/09
GRB_TIME: 30629.59 SOD {08:30:29.59} UT
GRB_PHI: 162.16 [deg]
GRB_THETA: 28.33 [deg]
SOLN_STATUS: 0x3
RATE_SIGNIF: 90.07 [sigma]
IMAGE_SIGNIF: 12.85 [sigma]
MERIT_PARAMS: +1 +0 +0 -1 +3 +2 +0 +0 +13 +0
SUN_POSTN: 139.70d {+09h 18m 48s} +15.66d {+15d 39' 44"}
SUN_DIST: 98.51 [deg] Sun_angle= -6.5 [hr] (East of Sun)
MOON_POSTN: 190.26d {+12h 41m 01s} -4.85d {-04d 51' 04"}
MOON_DIST: 47.57 [deg]
MOON_ILLUM: 21 [%]
GAL_COORDS: 5.81, 37.86 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 235.83, 17.35 [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 = 143.36,19.41 [deg].
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Fri 09 Aug 24 08:47:25 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 1247745, Seg_Num: 0
GRB_RA: 237.551d {+15h 50m 12s} (J2000),
237.871d {+15h 51m 29s} (current),
236.901d {+15h 47m 36s} (1950)
GRB_DEC: -2.321d {-02d 19' 15"} (J2000),
-2.394d {-02d 23' 38"} (current),
-2.170d {-02d 10' 12"} (1950)
GRB_DATE: 20531 TJD; 222 DOY; 24/08/09
GRB_TIME: 30629.59 SOD {08:30:29.59} UT
TRIGGER_INDEX: 127
GRB_PHI: 162.16 [deg]
GRB_THETA: 28.33 [deg]
DELTA_TIME: 45.00 [sec]
TRIGGER_DUR: 0.512 [sec]
SOLN_STATUS: 0x3
RATE_SIGNIF: 90.07 [sigma]
IMAGE_SIGNIF: 12.85 [sigma]
LC_URL: sw01247745000msb.lc
GCN template for BAT paragraph
Click here!
At 08:30:29 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 240809 ***A*** (trigger=1247745). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 237.551, -2.321 which is
RA(J2000) = 15h 50m 12s
Dec(J2000) = -02d 19' 15"
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 ~22525 counts/sec (15-350 keV), at ~2 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: 25.92 s +/- 0.64 s
Estimated T50 duration: 4.48 s +/- 0.128 s
Estimated Peak Interval: MET 744885066.81599998 +/- 0.500000 s
Estimated background rate 1: 4108.542 near MET 744885047.200000 s
Estimated background rate 2: 4373.731 near MET 744885174.656000 s
Estimated total duration: 44.992 s (for data selection)
(from MET 744885054.400000 to MET 744885099.392000)
Estimated total fluence: 131049.156422 count
Created GTI with 36 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 237.551 -2.321 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 237.551 -2.321
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 8 9 8 223.645669 -23.146421
Obj: 2024 8 9 8 110.350280 -26.767697
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2024 8 9 8 189.426684 -42.160151
Obj: 2024 8 9 8 87.469967 -0.495985
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2024 8 9 8 181.611467 -40.986792
Obj: 2024 8 9 8 84.180214 4.414793
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2024 8 9 8 131.348240 -38.963993
Obj: 2024 8 9 8 68.115101 41.000118
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2024 8 9 8 104.868239 -5.778746
Obj: 2024 8 9 8 201.903895 59.284101
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2024 8 9 8 92.649471 24.596974
Obj: 2024 8 9 8 319.113566 44.958741
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2024 8 9 8 260.741777 16.231814
Obj: 2024 8 9 8 184.631547 -63.584504
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2024 8 9 8 277.871175 -44.582380
Obj: 2024 8 9 8 65.541633 -31.439190
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger1247745/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 9 04:47:43 EDT 2024