TDRSS lightcurve for Trigger=1031636
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Tue 09 Feb 21 21:40:43 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1031636, Seg_Num: 0
GRB_RA: 328.096d {+21h 52m 23s} (J2000),
328.308d {+21h 53m 14s} (current),
327.596d {+21h 50m 23s} (1950)
GRB_DEC: +43.559d {+43d 33' 31"} (J2000),
+43.659d {+43d 39' 31"} (current),
+43.323d {+43d 19' 23"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 33045 [cnts] Image_Peak=781 [image_cnts]
TRIGGER_DUR: 12.160 [sec]
TRIGGER_INDEX: 478 E_range: 25-100 keV
BKG_INTEN: 156529 [cnts]
BKG_TIME: 77885.52 SOD {21:38:05.52} UT
BKG_DUR: 64 [sec]
GRB_DATE: 19254 TJD; 40 DOY; 21/02/09
GRB_TIME: 77984.52 SOD {21:39:44.52} UT
GRB_PHI: -11.13 [deg]
GRB_THETA: 21.51 [deg]
SOLN_STATUS: 0x3
RATE_SIGNIF: 10.81 [sigma]
IMAGE_SIGNIF: 10.25 [sigma]
MERIT_PARAMS: +1 +0 +0 +4 +2 +0 +0 +1 -52 +0
SUN_POSTN: 323.75d {+21h 35m 00s} -14.38d {-14d 22' 37"}
SUN_DIST: 58.19 [deg] Sun_angle= -0.3 [hr] (East of Sun)
MOON_POSTN: 300.76d {+20h 03m 01s} -23.84d {-23d 50' 35"}
MOON_DIST: 72.09 [deg]
MOON_ILLUM: 4 [%]
GAL_COORDS: 91.89, -8.26 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 352.84, 51.68 [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 = 223.94,4.66 [deg].
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Tue 09 Feb 21 22:02:58 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 1031636, Seg_Num: 0
GRB_RA: 328.096d {+21h 52m 23s} (J2000),
328.308d {+21h 53m 14s} (current),
327.596d {+21h 50m 23s} (1950)
GRB_DEC: +43.559d {+43d 33' 31"} (J2000),
+43.659d {+43d 39' 31"} (current),
+43.323d {+43d 19' 23"} (1950)
GRB_DATE: 19254 TJD; 40 DOY; 21/02/09
GRB_TIME: 77984.52 SOD {21:39:44.52} UT
TRIGGER_INDEX: 478
GRB_PHI: -11.13 [deg]
GRB_THETA: 21.51 [deg]
DELTA_TIME: 19.00 [sec]
TRIGGER_DUR: 12.160 [sec]
SOLN_STATUS: 0x3
RATE_SIGNIF: 10.81 [sigma]
IMAGE_SIGNIF: 10.25 [sigma]
LC_URL: sw01031636000msb.lc
GCN template for BAT paragraph
Click here!
At 21:39:44 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 210209 ***A*** (trigger=1031636). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 328.096, +43.559 which is
RA(J2000) = 21h 52m 23s
Dec(J2000) = +43d 33' 31"
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 ~1593 counts/sec (15-350 keV), at ~5 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: 117.76 s +/- 2.89772 s
Estimated T50 duration: 69.12 s +/- 2.90196 s
Estimated Peak Interval: MET 634599684.47999990 +/- 0.500000 s
Estimated background rate 1: 5085.119 near MET 634599597.280000 s
Estimated background rate 2: 4892.935 near MET 634599770.496000 s
Estimated total duration: 136.512 s (for data selection)
(from MET 634599607.360000 to MET 634599743.872000)
Estimated total fluence: 17700.913566 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 328.096 43.559 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 328.096 43.559
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: 2021 2 9 22 65.581587 6.433943
Obj: 2021 2 9 22 117.546038 42.526431
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2021 2 9 22 41.559650 32.942725
Obj: 2021 2 9 22 125.291774 63.224505
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2021 2 9 22 34.985503 34.762882
Obj: 2021 2 9 22 125.560265 68.306047
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2021 2 9 22 343.978275 54.509434
Obj: 2021 2 9 22 203.132240 63.417859
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2021 2 9 22 269.964032 28.588937
Obj: 2021 2 9 22 223.212179 -8.212154
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2021 2 9 22 286.552424 -1.384608
Obj: 2021 2 9 22 233.093962 25.451461
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2021 2 9 22 95.216958 -40.048761
Obj: 2021 2 9 22 142.901485 -1.082114
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2021 2 9 22 84.663460 19.980100
Obj: 2021 2 9 22 136.496669 -8.056169
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger1031636/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:
Tue Feb 9 17:03:23 EST 2021