TDRSS lightcurve for Trigger=965784
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sat 11 Apr 20 04:29:19 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 965784, Seg_Num: 0
GRB_RA: 47.659d {+03h 10m 38s} (J2000),
47.811d {+03h 11m 15s} (current),
47.285d {+03h 09m 08s} (1950)
GRB_DEC: -52.314d {-52d 18' 51"} (J2000),
-52.238d {-52d 14' 18"} (current),
-52.503d {-52d 30' 08"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 589 [cnts] Image_Peak=94 [image_cnts]
TRIGGER_DUR: 0.064 [sec]
TRIGGER_INDEX: 10418 E_range: 25-100 keV
BKG_INTEN: 18272 [cnts]
BKG_TIME: 16127.24 SOD {04:28:47.24} UT
BKG_DUR: 8 [sec]
GRB_DATE: 18950 TJD; 102 DOY; 20/04/11
GRB_TIME: 16142.28 SOD {04:29:02.28} UT
GRB_PHI: -161.70 [deg]
GRB_THETA: 8.30 [deg]
SOLN_STATUS: 0x3
RATE_SIGNIF: 34.97 [sigma]
IMAGE_SIGNIF: 10.06 [sigma]
MERIT_PARAMS: +1 +0 +0 -4 +2 +0 +0 +0 -41 +0
SUN_POSTN: 20.11d {+01h 20m 26s} +8.48d {+08d 28' 36"}
SUN_DIST: 65.18 [deg] Sun_angle= -1.8 [hr] (East of Sun)
MOON_POSTN: 243.27d {+16h 13m 04s} -18.75d {-18d 45' 12"}
MOON_DIST: 107.74 [deg]
MOON_ILLUM: 87 [%]
GAL_COORDS: 266.66,-53.86 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 13.62,-64.93 [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 = 122.52,-19.90 [deg].
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sat 11 Apr 20 04:52:13 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 965784, Seg_Num: 0
GRB_RA: 47.659d {+03h 10m 38s} (J2000),
47.811d {+03h 11m 15s} (current),
47.285d {+03h 09m 08s} (1950)
GRB_DEC: -52.314d {-52d 18' 51"} (J2000),
-52.238d {-52d 14' 18"} (current),
-52.503d {-52d 30' 08"} (1950)
GRB_DATE: 18950 TJD; 102 DOY; 20/04/11
GRB_TIME: 16142.45 SOD {04:29:02.45} UT
TRIGGER_INDEX: 10418
GRB_PHI: -161.70 [deg]
GRB_THETA: 8.30 [deg]
DELTA_TIME: 80.00 [sec]
TRIGGER_DUR: 0.064 [sec]
SOLN_STATUS: 0x3
RATE_SIGNIF: 34.97 [sigma]
IMAGE_SIGNIF: 10.06 [sigma]
LC_URL: sw00965784000msb.lc
GCN template for BAT paragraph
Click here!
At 04:29:02 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 200411 ***A*** (trigger=965784). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 47.659, -52.314 which is
RA(J2000) = 03h 10m 38s
Dec(J2000) = -52d 18' 51"
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 ~6679 counts/sec (15-350 keV), at ~0 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: 0.256 s +/- 0.128 s
Estimated Peak Interval: MET 608272167.42400002 +/- 0.500000 s
Estimated background rate 1: 4592.239 near MET 608272155.584000 s
Estimated background rate 2: 4609.305 near MET 608272260.736000 s
Estimated total duration: 0.384 s (for data selection)
(from MET 608272167.168000 to MET 608272167.552000)
Estimated total fluence: 1436.789616 count
Created GTI with 5 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 47.659 -52.314 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 47.659 -52.314
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 4 11 4 157.055107 -39.801018
Obj: 2020 4 11 4 51.745819 -56.323808
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2020 4 11 4 120.007910 -26.454455
Obj: 2020 4 11 4 44.460519 -30.798718
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2020 4 11 4 116.384407 -21.222826
Obj: 2020 4 11 4 43.957906 -28.473321
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2020 4 11 4 95.939303 8.635791
Obj: 2020 4 11 4 30.584184 3.020059
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2020 4 11 4 140.941006 41.852919
Obj: 2020 4 11 4 1.025861 69.030552
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2020 4 11 4 25.230087 61.915185
Obj: 2020 4 11 4 350.264254 2.197042
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2020 4 11 4 233.352273 -35.472394
Obj: 2020 4 11 4 340.444922 -64.438082
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2020 4 11 4 29.065142 -65.555168
Obj: 2020 4 11 4 22.900550 -0.542114
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger965784/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:
Sat Apr 11 00:52:43 EDT 2020