TDRSS lightcurve for Trigger=887580
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Mon 04 Feb 19 05:46:46 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 887580, Seg_Num: 0
GRB_RA: 351.514d {+23h 26m 03s} (J2000),
351.737d {+23h 26m 57s} (current),
350.934d {+23h 23m 44s} (1950)
GRB_DEC: +54.878d {+54d 52' 42"} (J2000),
+54.984d {+54d 59' 01"} (current),
+54.603d {+54d 36' 12"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 5197 [cnts] Image_Peak=826 [image_cnts]
TRIGGER_DUR: 0.256 [sec]
TRIGGER_INDEX: 123 E_range: 25-100 keV
BKG_INTEN: 25914 [cnts]
BKG_TIME: 20753.63 SOD {05:45:53.63} UT
BKG_DUR: 8 [sec]
GRB_DATE: 18518 TJD; 35 DOY; 19/02/04
GRB_TIME: 20766.05 SOD {05:46:06.05} UT
GRB_PHI: 145.88 [deg]
GRB_THETA: 31.28 [deg]
SOLN_STATUS: 0x3000000D
RATE_SIGNIF: 148.71 [sigma]
IMAGE_SIGNIF: 20.24 [sigma]
MERIT_PARAMS: +0 +0 +100 -2 +2 +7 +0 +1 -22 +0
SUN_POSTN: 317.57d {+21h 10m 18s} -16.30d {-16d 18' 06"}
SUN_DIST: 76.95 [deg] Sun_angle= -2.3 [hr] (East of Sun)
MOON_POSTN: 310.87d {+20h 43m 28s} -19.25d {-19d 15' 14"}
MOON_DIST: 81.98 [deg]
MOON_ILLUM: 0 [%]
GAL_COORDS: 110.78, -5.97 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 23.50, 51.65 [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 matches a source in the on-board catalog: Num=27579=(null) (probably an AT_Slot).
COMMENTS: This does not match any source in the ground catalog.
COMMENTS: This is not a GRB.
COMMENTS: This is an interesting source.
COMMENTS: This trigger occurred at longitude,latitude = 119.45,18.13 [deg].
COMMENTS:
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Mon 04 Feb 19 06:05:14 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 887580, Seg_Num: 0
GRB_RA: 351.514d {+23h 26m 03s} (J2000),
351.737d {+23h 26m 57s} (current),
350.934d {+23h 23m 44s} (1950)
GRB_DEC: +54.878d {+54d 52' 42"} (J2000),
+54.984d {+54d 59' 01"} (current),
+54.603d {+54d 36' 12"} (1950)
GRB_DATE: 18518 TJD; 35 DOY; 19/02/04
GRB_TIME: 20766.05 SOD {05:46:06.05} UT
TRIGGER_INDEX: 123
GRB_PHI: 145.88 [deg]
GRB_THETA: 31.28 [deg]
DELTA_TIME: 38.00 [sec]
TRIGGER_DUR: 0.256 [sec]
SOLN_STATUS: 0xD
RATE_SIGNIF: 148.71 [sigma]
IMAGE_SIGNIF: 20.24 [sigma]
LC_URL: sw00887580000msb.lc
GCN template for BAT paragraph
Click here!
At 05:46:06 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 190204 ***A*** (trigger=887580). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 351.514, +54.878 which is
RA(J2000) = 23h 26m 03s
Dec(J2000) = +54d 52' 42"
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 ~28745 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
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: 17.856 s +/- 1.14576 s
Estimated T50 duration: 3.2 s +/- 0.128 s
Estimated Peak Interval: MET 570951988.54399991 +/- 0.500000 s
Estimated background rate 1: 4448.393 near MET 570951970.400000 s
Estimated background rate 2: 4201.046 near MET 570952111.232000 s
Estimated total duration: 71.744 s (for data selection)
(from MET 570951976.000000 to MET 570952047.744000)
Estimated total fluence: 97205.742432 count
Created GTI with 28 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 351.514 54.878 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 351.514 54.878
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 2 4 6 201.983618 -65.943963
Obj: 2019 2 4 6 165.879143 6.352868
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2019 2 4 6 118.459580 -62.711582
Obj: 2019 2 4 6 150.008619 10.255800
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2019 2 4 6 113.964246 -57.452673
Obj: 2019 2 4 6 147.543293 14.296624
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2019 2 4 6 80.545317 -24.393451
Obj: 2019 2 4 6 142.414956 23.833623
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2019 2 4 6 93.289784 37.925247
Obj: 2019 2 4 6 168.150956 1.833362
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2019 2 4 6 42.314407 27.435574
Obj: 2019 2 4 6 172.977584 69.186931
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2019 2 4 6 274.768023 -26.658326
Obj: 2019 2 4 6 198.723910 -1.358757
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2019 2 4 6 340.664727 -41.187021
Obj: 2019 2 4 6 156.561524 -61.858936
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger887580/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:
Mon Feb 4 01:05:56 EST 2019