TDRSS lightcurve for Trigger=974942
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Fri 29 May 20 00:57:35 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 974942, Seg_Num: 0
GRB_RA: 238.751d {+15h 55m 00s} (J2000),
239.032d {+15h 56m 08s} (current),
238.065d {+15h 52m 16s} (1950)
GRB_DEC: -11.057d {-11d 03' 25"} (J2000),
-11.116d {-11d 06' 57"} (current),
-10.911d {-10d 54' 40"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 39306 [cnts] Image_Peak=1352 [image_cnts]
TRIGGER_DUR: 12.160 [sec]
TRIGGER_INDEX: 478 E_range: 25-100 keV
BKG_INTEN: 177054 [cnts]
BKG_TIME: 3302.97 SOD {00:55:02.97} UT
BKG_DUR: 64 [sec]
GRB_DATE: 18998 TJD; 150 DOY; 20/05/29
GRB_TIME: 3395.77 SOD {00:56:35.77} UT
GRB_PHI: 61.47 [deg]
GRB_THETA: 29.00 [deg]
SOLN_STATUS: 0x20000003
RATE_SIGNIF: 19.26 [sigma]
IMAGE_SIGNIF: 16.33 [sigma]
MERIT_PARAMS: +1 +0 +0 +4 +2 +4 +0 +0 +97 +0
SUN_POSTN: 66.38d {+04h 25m 31s} +21.66d {+21d 39' 40"}
SUN_DIST: 167.32 [deg] Sun_angle= -11.5 [hr] (East of Sun)
MOON_POSTN: 147.67d {+09h 50m 40s} +17.67d {+17d 40' 19"}
MOON_DIST: 94.63 [deg]
MOON_ILLUM: 38 [%]
GAL_COORDS: 358.55, 31.37 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 238.96, 9.08 [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 = 40.45,13.14 [deg].
COMMENTS:
COMMENTS: NOTE: This BAT event is temporally(4.0<100sec) coincident with the FERMI_GBM event (trignum=612406604).
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Fri 29 May 20 01:13:18 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 974942, Seg_Num: 0
GRB_RA: 238.751d {+15h 55m 00s} (J2000),
239.032d {+15h 56m 08s} (current),
238.065d {+15h 52m 16s} (1950)
GRB_DEC: -11.057d {-11d 03' 25"} (J2000),
-11.116d {-11d 06' 57"} (current),
-10.911d {-10d 54' 40"} (1950)
GRB_DATE: 18998 TJD; 150 DOY; 20/05/29
GRB_TIME: 3395.77 SOD {00:56:35.77} UT
TRIGGER_INDEX: 478
GRB_PHI: 61.47 [deg]
GRB_THETA: 29.00 [deg]
DELTA_TIME: 0.00 [sec]
TRIGGER_DUR: 12.160 [sec]
SOLN_STATUS: 0x3
RATE_SIGNIF: 19.26 [sigma]
IMAGE_SIGNIF: 16.33 [sigma]
LC_URL: sw00974942000msb.lc
GCN template for BAT paragraph
Click here!
At 00:56:35 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 200529 ***A*** (trigger=974942). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 238.751, -11.057 which is
RA(J2000) = 15h 55m 00s
Dec(J2000) = -11d 03' 25"
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 ~1753 counts/sec (15-350 keV), at ~1 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: 143.616 s +/- 4.10399 s
Estimated T50 duration: 78.592 s +/- 2.90196 s
Estimated Peak Interval: MET 612406702.27199996 +/- 0.500000 s
Estimated background rate 1: 5782.670 near MET 612406607.360000 s
Estimated background rate 2: 5581.543 near MET 612406800.576000 s
Estimated total duration: 176.512 s (for data selection)
(from MET 612406617.920000 to MET 612406794.432000)
Estimated total fluence: 56945.212373 count
Created GTI with 8 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 238.751 -11.057 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 238.751 -11.057
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: 2020 5 29 1 124.565413 -6.326234
Obj: 2020 5 29 1 302.565127 18.793381
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2020 5 29 1 106.017378 15.808521
Obj: 2020 5 29 1 280.319203 -4.493705
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2020 5 29 1 102.676836 21.109621
Obj: 2020 5 29 1 276.989988 -9.731258
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2020 5 29 1 100.005446 52.926309
Obj: 2020 5 29 1 266.367568 -44.016146
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2020 5 29 1 197.959328 34.891314
Obj: 2020 5 29 1 12.143561 -46.858071
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2020 5 29 1 285.556111 58.854524
Obj: 2020 5 29 1 129.557792 -57.411754
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2020 5 29 1 176.703552 -39.534879
Obj: 2020 5 29 1 7.039863 49.859144
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2020 5 29 1 94.101494 -39.591034
Obj: 2020 5 29 1 257.557873 41.174550
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger974942/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 May 28 21:13:43 EDT 2020