TDRSS lightcurve for Trigger=996503
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sat 19 Sep 20 01:53:04 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 996503, Seg_Num: 0
GRB_RA: 168.916d {+11h 15m 40s} (J2000),
169.195d {+11h 16m 47s} (current),
168.240d {+11h 12m 58s} (1950)
GRB_DEC: +32.457d {+32d 27' 25"} (J2000),
+32.344d {+32d 20' 37"} (current),
+32.730d {+32d 43' 47"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 11834 [cnts] Image_Peak=379 [image_cnts]
TRIGGER_DUR: 4.096 [sec]
TRIGGER_INDEX: 298 E_range: 25-100 keV
BKG_INTEN: 98883 [cnts]
BKG_TIME: 6686.34 SOD {01:51:26.34} UT
BKG_DUR: 40 [sec]
GRB_DATE: 19111 TJD; 263 DOY; 20/09/19
GRB_TIME: 6740.93 SOD {01:52:20.93} UT
GRB_PHI: -120.97 [deg]
GRB_THETA: 25.26 [deg]
SOLN_STATUS: 0x3
RATE_SIGNIF: 14.45 [sigma]
IMAGE_SIGNIF: 9.51 [sigma]
MERIT_PARAMS: +1 +0 +0 +2 +2 +0 -100 +0 -84 +0
SUN_POSTN: 176.88d {+11h 47m 30s} +1.35d {+01d 21' 10"}
SUN_DIST: 31.82 [deg] Sun_angle= 0.5 [hr] (West of Sun)
MOON_POSTN: 199.52d {+13h 18m 05s} -3.34d {-03d 20' 19"}
MOON_DIST: 45.83 [deg]
MOON_ILLUM: 4 [%]
GAL_COORDS: 192.73, 68.60 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 156.37, 25.33 [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 = 127.69,18.89 [deg].
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sat 19 Sep 20 02:09:46 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 996503, Seg_Num: 0
GRB_RA: 168.916d {+11h 15m 40s} (J2000),
169.195d {+11h 16m 47s} (current),
168.240d {+11h 12m 58s} (1950)
GRB_DEC: +32.457d {+32d 27' 25"} (J2000),
+32.344d {+32d 20' 37"} (current),
+32.730d {+32d 43' 47"} (1950)
GRB_DATE: 19111 TJD; 263 DOY; 20/09/19
GRB_TIME: 6740.93 SOD {01:52:20.93} UT
TRIGGER_INDEX: 298
GRB_PHI: -120.97 [deg]
GRB_THETA: 25.26 [deg]
DELTA_TIME: -18.00 [sec]
TRIGGER_DUR: 4.096 [sec]
SOLN_STATUS: 0x3
RATE_SIGNIF: 14.45 [sigma]
IMAGE_SIGNIF: 9.51 [sigma]
LC_URL: sw00996503000msb.lc
GCN template for BAT paragraph
Click here!
At 01:52:20 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 200919 ***A*** (trigger=996503). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 168.916, +32.457 which is
RA(J2000) = 11h 15m 40s
Dec(J2000) = +32d 27' 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 ~1656 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: 5.888 s +/- 0.181019 s
Estimated T50 duration: 2.944 s +/- 0.286217 s
Estimated Peak Interval: MET 622173166.78399992 +/- 0.500000 s
Estimated background rate 1: 5118.304 near MET 622173153.600000 s
Estimated background rate 2: 4884.249 near MET 622173280.640000 s
Estimated total duration: 44.16 s (for data selection)
(from MET 622173164.800000 to MET 622173208.960000)
Estimated total fluence: 3284.985436 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 168.916 32.457 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 168.916 32.457
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 9 19 2 122.502443 -31.808648
Obj: 2020 9 19 2 147.976296 -10.390992
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2020 9 19 2 96.542217 -7.968412
Obj: 2020 9 19 2 126.335979 3.425870
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2020 9 19 2 93.437441 -2.798060
Obj: 2020 9 19 2 123.276255 8.519096
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2020 9 19 2 78.386284 32.606791
Obj: 2020 9 19 2 116.385642 32.568994
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2020 9 19 2 179.757625 57.345153
Obj: 2020 9 19 2 172.654102 25.908337
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2020 9 19 2 331.486270 53.515386
Obj: 2020 9 19 2 283.209971 82.370142
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2020 9 19 2 204.999957 -57.376787
Obj: 2020 9 19 2 199.526188 -25.801054
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2020 9 19 2 60.231111 -42.375574
Obj: 2020 9 19 2 102.607701 -62.520731
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger996503/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 Sep 18 22:10:05 EDT 2020