TDRSS lightcurve for Trigger=946476
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sat 28 Dec 19 00:02:48 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 946476, Seg_Num: 0
GRB_RA: 5.339d {+00h 21m 21s} (J2000),
5.594d {+00h 22m 22s} (current),
4.702d {+00h 18m 49s} (1950)
GRB_DEC: -8.670d {-08d 40' 12"} (J2000),
-8.560d {-08d 33' 33"} (current),
-8.948d {-08d 56' 50"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 0 [cnts] Image_Peak=2655 [image_cnts]
TRIGGER_DUR: 72.000 [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: 18845 TJD; 362 DOY; 19/12/28
GRB_TIME: 79.83 SOD {00:01:19.83} UT
GRB_PHI: 76.52 [deg]
GRB_THETA: 11.30 [deg]
SOLN_STATUS: 0x13
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 12.82 [sigma]
MERIT_PARAMS: +1 +0 +0 +6 +1 +2 +0 +0 -7 +0
SUN_POSTN: 276.47d {+18h 25m 52s} -23.30d {-23d 18' 09"}
SUN_DIST: 85.83 [deg] Sun_angle= -5.9 [hr] (East of Sun)
MOON_POSTN: 299.62d {+19h 58m 30s} -22.49d {-22d 29' 19"}
MOON_DIST: 64.60 [deg]
MOON_ILLUM: 3 [%]
GAL_COORDS: 100.46,-70.22 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 1.42,-10.07 [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 = 222.50,4.53 [deg].
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sat 28 Dec 19 00:20:53 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 946476, Seg_Num: 0
GRB_RA: 5.339d {+00h 21m 21s} (J2000),
5.594d {+00h 22m 22s} (current),
4.702d {+00h 18m 49s} (1950)
GRB_DEC: -8.670d {-08d 40' 12"} (J2000),
-8.560d {-08d 33' 33"} (current),
-8.948d {-08d 56' 50"} (1950)
GRB_DATE: 18845 TJD; 362 DOY; 19/12/28
GRB_TIME: 79.83 SOD {00:01:19.83} UT
TRIGGER_INDEX: 20000
GRB_PHI: 76.52 [deg]
GRB_THETA: 11.30 [deg]
DELTA_TIME: 0.00 [sec]
TRIGGER_DUR: 72.000 [sec]
SOLN_STATUS: 0x13
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 12.82 [sigma]
LC_URL: sw00946476000msb.lc
GCN template for BAT paragraph
Click here!
At 00:01:19 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 191228 ***A*** (trigger=946476). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 5.339, -8.670 which is
RA(J2000) = 00h 21m 21s
Dec(J2000) = -08d 40' 12"
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 ~1679 counts/sec (15-350 keV), at ~20 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: 127.232 s +/- 108.043 s
Estimated T50 duration: 127.232 s +/- 112.369 s
Estimated Peak Interval: MET 599184230.52800000 +/- 0.500000 s
Estimated background rate 1: 4919.723 near MET 599184098.816000 s
Estimated background rate 2: 4717.662 near MET 599184267.392000 s
Estimated total duration: 127.232 s (for data selection)
(from MET 599184117.632000 to MET 599184244.864000)
Estimated total fluence: -2640.028231 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 5.339 -8.670 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 5.339 -8.670
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: 2019 12 28 0 78.403191 -23.702805
Obj: 2019 12 28 0 17.388615 40.850642
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2019 12 28 0 58.897988 4.592412
Obj: 2019 12 28 0 330.173957 45.086320
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2019 12 28 0 55.221968 7.922513
Obj: 2019 12 28 0 323.847614 40.938487
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2019 12 28 0 29.355768 41.002663
Obj: 2019 12 28 0 287.290380 19.665953
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2019 12 28 0 262.043512 60.802866
Obj: 2019 12 28 0 294.696755 -20.884941
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2019 12 28 0 314.382393 16.230996
Obj: 2019 12 28 0 246.634589 -43.279679
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2019 12 28 0 103.681924 -72.398714
Obj: 2019 12 28 0 73.672832 11.109244
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2019 12 28 0 60.842091 -2.791932
Obj: 2019 12 28 0 136.695628 61.819470
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger946476/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 Dec 27 19:21:22 EST 2019