TDRSS lightcurve for Trigger=1180055
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Thu 20 Jul 23 07:19:42 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1180055, Seg_Num: 0
GRB_RA: 245.960d {+16h 23m 50s} (J2000),
246.289d {+16h 25m 09s} (current),
245.263d {+16h 21m 03s} (1950)
GRB_DEC: -12.726d {-12d 43' 34"} (J2000),
-12.779d {-12d 46' 45"} (current),
-12.611d {-12d 36' 40"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 0 [cnts] Image_Peak=3304 [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: 20145 TJD; 201 DOY; 23/07/20
GRB_TIME: 26304.32 SOD {07:18:24.32} UT
GRB_PHI: 114.00 [deg]
GRB_THETA: 22.97 [deg]
SOLN_STATUS: 0x413
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 17.50 [sigma]
MERIT_PARAMS: +1 +0 +0 +6 +1 +5 +0 +0 +61 +0
SUN_POSTN: 119.41d {+07h 57m 39s} +20.69d {+20d 41' 11"}
SUN_DIST: 128.73 [deg] Sun_angle= -8.5 [hr] (East of Sun)
MOON_POSTN: 149.02d {+09h 56m 06s} +17.33d {+17d 19' 58"}
MOON_DIST: 100.58 [deg]
MOON_ILLUM: 6 [%]
GAL_COORDS: 2.23, 24.88 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 246.29, 8.76 [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 = 225.03,-18.67 [deg].
COMMENTS:
COMMENTS: This trigger occured while the StarTracker had lost lock, so it is possibly bogus.
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Thu 20 Jul 23 07:36:30 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 1180055, Seg_Num: 0
GRB_RA: 245.960d {+16h 23m 50s} (J2000),
246.289d {+16h 25m 09s} (current),
245.263d {+16h 21m 03s} (1950)
GRB_DEC: -12.726d {-12d 43' 34"} (J2000),
-12.779d {-12d 46' 45"} (current),
-12.611d {-12d 36' 40"} (1950)
GRB_DATE: 20145 TJD; 201 DOY; 23/07/20
GRB_TIME: 26304.32 SOD {07:18:24.32} UT
TRIGGER_INDEX: 20000
GRB_PHI: 114.00 [deg]
GRB_THETA: 22.97 [deg]
DELTA_TIME: 0.00 [sec]
TRIGGER_DUR: 64.000 [sec]
SOLN_STATUS: 0x413
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 17.50 [sigma]
LC_URL: sw01180055000msb.lc
GCN template for BAT paragraph
Click here!
At 07:18:24 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 230720 ***A*** (trigger=1180055). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 245.960, -12.726 which is
RA(J2000) = 16h 23m 50s
Dec(J2000) = -12d 43' 34"
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 ~853 counts/sec (15-350 keV), at ~155 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: 32.768 s +/- 24.915 s
Estimated T50 duration: 32.768 s +/- 29.8193 s
Estimated Peak Interval: MET 711530458.43199992 +/- 0.500000 s
Estimated background rate 1: 3434.812 near MET 711530367.808000 s
Estimated background rate 2: 3805.939 near MET 711530489.152000 s
Estimated total duration: 32.768 s (for data selection)
(from MET 711530423.616000 to MET 711530456.384000)
Estimated total fluence: -1653.276500 count
Created GTI with 4 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 245.960 -12.726 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 245.960 -12.726
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 7 20 7 207.052222 -25.553111
Obj: 2023 7 20 7 73.291448 0.166364
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2023 7 20 7 170.637975 -37.091475
Obj: 2023 7 20 7 51.518037 27.946784
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2023 7 20 7 164.140040 -34.363658
Obj: 2023 7 20 7 45.722067 30.634372
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2023 7 20 7 125.275511 -24.555116
Obj: 2023 7 20 7 1.012218 57.361140
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2023 7 20 7 116.954357 3.624653
Obj: 2023 7 20 7 262.706128 36.412117
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2023 7 20 7 89.340127 39.647754
Obj: 2023 7 20 7 291.111395 7.434795
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2023 7 20 7 249.476514 5.637346
Obj: 2023 7 20 7 103.437826 -48.029530
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2023 7 20 7 280.982335 -59.760530
Obj: 2023 7 20 7 81.319019 10.593180
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger1180055/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 Jul 20 03:37:03 EDT 2023