TDRSS lightcurve for Trigger=813771
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Mon 12 Mar 18 00:30:00 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 813771, Seg_Num: 0
GRB_RA: 275.025d {+18h 20m 06s} (J2000),
275.245d {+18h 20m 59s} (current),
274.419d {+18h 17m 41s} (1950)
GRB_DEC: +7.192d {+07d 11' 33"} (J2000),
+7.201d {+07d 12' 05"} (current),
+7.169d {+07d 10' 10"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 0 [cnts] Image_Peak=7354 [image_cnts]
TRIGGER_DUR: 1024.000 [sec] (=17.1 [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: 18189 TJD; 71 DOY; 18/03/12
GRB_TIME: 699.39 SOD {00:11:39.39} UT
GRB_PHI: -171.02 [deg]
GRB_THETA: 37.11 [deg]
SOLN_STATUS: 0x13
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 7.92 [sigma]
MERIT_PARAMS: +1 +0 +0 +8 +1 -2 +0 +0 -21 +0
SUN_POSTN: 352.08d {+23h 28m 20s} -3.42d {-03d 24' 57"}
SUN_DIST: 77.41 [deg] Sun_angle= 5.1 [hr] (West of Sun)
MOON_POSTN: 290.19d {+19h 20m 45s} -19.82d {-19d 48' 58"}
MOON_DIST: 30.76 [deg]
MOON_ILLUM: 27 [%]
GAL_COORDS: 35.83, 10.22 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 275.79, 30.53 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS: SWIFT-BAT GRB Coordinates.
COMMENTS: This Notice was delayed by more than 60 sec past the end of the trigger integration interval;
COMMENTS: probably due to it occurring during a Malindi downlink session.
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 = 90.64,-9.32 [deg].
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Mon 12 Mar 18 00:41:15 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 813771, Seg_Num: 0
GRB_RA: 275.025d {+18h 20m 06s} (J2000),
275.245d {+18h 20m 59s} (current),
274.419d {+18h 17m 41s} (1950)
GRB_DEC: +7.192d {+07d 11' 33"} (J2000),
+7.201d {+07d 12' 05"} (current),
+7.169d {+07d 10' 10"} (1950)
GRB_DATE: 18189 TJD; 71 DOY; 18/03/12
GRB_TIME: 699.39 SOD {00:11:39.39} UT
TRIGGER_INDEX: 20000
GRB_PHI: -171.02 [deg]
GRB_THETA: 37.11 [deg]
DELTA_TIME: 0.00 [sec]
TRIGGER_DUR: 1024.000 [sec] (=17.1 [min])
SOLN_STATUS: 0x13
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 7.92 [sigma]
LC_URL: sw00813771000msb.lc
GCN template for BAT paragraph
Click here!
At 00:11:39 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 180312 ***A*** (trigger=813771). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 275.025, +7.192 which is
RA(J2000) = 18h 20m 06s
Dec(J2000) = +07d 11' 33"
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 ~0 counts/sec (15-350 keV), at ~ 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
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)
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 275.025 7.192 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 3 12 0 93.742796 -10.069399
Obj: 2018 3 12 0 175.843223 -43.736671
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2018 3 12 0 73.938689 18.154243
Obj: 2018 3 12 0 131.182705 -37.484241
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2018 3 12 0 69.547763 22.425700
Obj: 2018 3 12 0 126.652253 -32.514240
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2018 3 12 0 44.666077 58.522778
Obj: 2018 3 12 0 99.658020 -5.408543
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2018 3 12 0 235.741783 47.623368
Obj: 2018 3 12 0 125.638902 33.732421
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2018 3 12 0 297.894469 29.303700
Obj: 2018 3 12 0 47.770578 53.552710
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2018 3 12 0 138.124236 -57.855344
Obj: 2018 3 12 0 245.370909 -25.273914
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2018 3 12 0 78.746475 -12.040105
Obj: 2018 3 12 0 352.776262 -66.722852
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger813771/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:
Sun Mar 11 20:41:42 EDT 2018