TDRSS lightcurve for Trigger=809217
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Thu 08 Feb 18 23:04:38 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 809217, Seg_Num: 0
GRB_RA: 20.786d {+01h 23m 09s} (J2000),
21.023d {+01h 24m 06s} (current),
20.133d {+01h 20m 32s} (1950)
GRB_DEC: +7.444d {+07d 26' 38"} (J2000),
+7.538d {+07d 32' 17"} (current),
+7.183d {+07d 10' 59"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 0 [cnts] Image_Peak=2964 [image_cnts]
TRIGGER_DUR: 320.000 [sec] (=5.3 [min])
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: 18157 TJD; 39 DOY; 18/02/08
GRB_TIME: 82739.55 SOD {22:58:59.55} UT
GRB_PHI: 51.20 [deg]
GRB_THETA: 18.39 [deg]
SOLN_STATUS: 0x1019D
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 6.46 [sigma]
MERIT_PARAMS: +0 +0 +123 +6 +1 -4 +0 +0 -47 +1
SUN_POSTN: 322.55d {+21h 30m 11s} -14.77d {-14d 46' 05"}
SUN_DIST: 62.11 [deg] Sun_angle= -3.9 [hr] (East of Sun)
MOON_POSTN: 243.58d {+16h 14m 20s} -16.11d {-16d 06' 46"}
MOON_DIST: 137.55 [deg]
MOON_ILLUM: 38 [%]
GAL_COORDS: 136.58,-54.59 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 21.99, -1.21 [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 is a low-flux event whose position matches one of the nearby galaxy sources in the on-board catalog!
COMMENTS: This matches a source in the on-board catalog: Num=11008=HD 8357, delta=0.055 [deg].
COMMENTS: This matches a source in the ground catalog: HD 8357, delta=0.055 [deg].
COMMENTS: This is a GRB in nearby galaxy or it is noise.
COMMENTS: This trigger occurred at longitude,latitude = 280.96,16.55 [deg].
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Thu 08 Feb 18 23:16:01 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 809217, Seg_Num: 0
GRB_RA: 20.786d {+01h 23m 09s} (J2000),
21.023d {+01h 24m 06s} (current),
20.133d {+01h 20m 32s} (1950)
GRB_DEC: +7.444d {+07d 26' 38"} (J2000),
+7.538d {+07d 32' 17"} (current),
+7.183d {+07d 10' 59"} (1950)
GRB_DATE: 18157 TJD; 39 DOY; 18/02/08
GRB_TIME: 82739.55 SOD {22:58:59.55} UT
TRIGGER_INDEX: 20000
GRB_PHI: 51.20 [deg]
GRB_THETA: 18.39 [deg]
DELTA_TIME: 0.00 [sec]
TRIGGER_DUR: 320.000 [sec] (=5.3 [min])
SOLN_STATUS: 0x19D
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 6.46 [sigma]
LC_URL: sw00809217000msb.lc
GCN template for BAT paragraph
Click here!
At 22:58:59 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 180208 ***A*** (trigger=809217). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 20.786, +7.444 which is
RA(J2000) = 01h 23m 09s
Dec(J2000) = +07d 26' 38"
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 ~1312 counts/sec (15-350 keV), at ~-1 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 background rate 1: 5399.444 near MET 539823585.664000 s
Estimated background rate 2: 5321.452 near MET 539823690.624000 s
Estimated total fluence: 0.000000 count
Created GTI with 2 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 20.786 7.444 0.083
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: 2018 2 8 23 74.817328 -4.790822
Obj: 2018 2 8 23 42.913176 50.994292
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2018 2 8 23 53.787197 23.179524
Obj: 2018 2 8 23 340.254996 64.598205
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2018 2 8 23 48.518851 26.066820
Obj: 2018 2 8 23 329.517006 60.938171
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2018 2 8 23 9.274282 54.952096
Obj: 2018 2 8 23 275.707465 37.267173
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2018 2 8 23 261.927736 41.565212
Obj: 2018 2 8 23 273.093809 -19.683417
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2018 2 8 23 295.718365 9.917909
Obj: 2018 2 8 23 242.075600 -23.350994
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2018 2 8 23 104.318298 -53.183225
Obj: 2018 2 8 23 94.064235 8.295935
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2018 2 8 23 77.191092 7.386217
Obj: 2018 2 8 23 136.200975 41.523307
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger809217/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:
Thu Feb 8 18:16:24 EST 2018