TDRSS lightcurve for Trigger=831810
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Thu 10 May 18 19:24:48 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 831810, Seg_Num: 0
GRB_RA: 276.318d {+18h 25m 16s} (J2000),
276.617d {+18h 26m 28s} (current),
275.505d {+18h 22m 01s} (1950)
GRB_DEC: -31.911d {-31d 54' 38"} (J2000),
-31.899d {-31d 53' 57"} (current),
-31.940d {-31d 56' 21"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 4312 [cnts] Image_Peak=262 [image_cnts]
TRIGGER_DUR: 1.024 [sec]
TRIGGER_INDEX: 147 E_range: 25-100 keV
BKG_INTEN: 24574 [cnts]
BKG_TIME: 69859.07 SOD {19:24:19.07} UT
BKG_DUR: 8 [sec]
GRB_DATE: 18248 TJD; 130 DOY; 18/05/10
GRB_TIME: 69874.30 SOD {19:24:34.30} UT
GRB_PHI: 45.11 [deg]
GRB_THETA: 34.43 [deg]
SOLN_STATUS: 0x3
RATE_SIGNIF: 22.91 [sigma]
IMAGE_SIGNIF: 11.84 [sigma]
MERIT_PARAMS: +1 +0 +0 +0 +2 +1 +0 +1 +69 +0
SUN_POSTN: 47.64d {+03h 10m 35s} +17.76d {+17d 45' 45"}
SUN_DIST: 133.78 [deg] Sun_angle= 8.7 [hr] (West of Sun)
MOON_POSTN: 352.72d {+23h 30m 52s} -6.75d {-06d 45' 05"}
MOON_DIST: 74.65 [deg]
MOON_ILLUM: 25 [%]
GAL_COORDS: 1.54, -8.92 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 275.42, -8.59 [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 = 180.68,-8.46 [deg].
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Thu 10 May 18 19:42:09 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 831810, Seg_Num: 0
GRB_RA: 276.318d {+18h 25m 16s} (J2000),
276.617d {+18h 26m 28s} (current),
275.505d {+18h 22m 01s} (1950)
GRB_DEC: -31.911d {-31d 54' 38"} (J2000),
-31.899d {-31d 53' 57"} (current),
-31.940d {-31d 56' 21"} (1950)
GRB_DATE: 18248 TJD; 130 DOY; 18/05/10
GRB_TIME: 69874.30 SOD {19:24:34.30} UT
TRIGGER_INDEX: 147
GRB_PHI: 45.11 [deg]
GRB_THETA: 34.43 [deg]
DELTA_TIME: 77.00 [sec]
TRIGGER_DUR: 1.024 [sec]
SOLN_STATUS: 0x3
RATE_SIGNIF: 22.91 [sigma]
IMAGE_SIGNIF: 11.84 [sigma]
LC_URL: sw00831810000msb.lc
GCN template for BAT paragraph
Click here!
At 19:24:34 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 180510 ***A*** (trigger=831810). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 276.318, -31.911 which is
RA(J2000) = 18h 25m 16s
Dec(J2000) = -31d 54' 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 ~8003 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: 57.408 s +/- 2.90513 s
Estimated T50 duration: 22.4 s +/- 1.024 s
Estimated Peak Interval: MET 547673101.11999989 +/- 0.500000 s
Estimated background rate 1: 5885.849 near MET 547673080.480000 s
Estimated background rate 2: 5875.814 near MET 547673226.624000 s
Estimated total duration: 82.368 s (for data selection)
(from MET 547673088.960000 to MET 547673171.328000)
Estimated total fluence: 58477.970836 count
Created GTI with 23 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 276.318 -31.911 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 5 10 19 57.515785 57.363758
Obj: 2018 5 10 19 106.857710 -71.942516
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2018 5 10 19 339.105702 75.214849
Obj: 2018 5 10 19 74.585804 -44.248343
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2018 5 10 19 323.760207 71.314732
Obj: 2018 5 10 19 74.042040 -39.841324
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2018 5 10 19 263.777490 42.706362
Obj: 2018 5 10 19 57.100425 -3.115459
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2018 5 10 19 262.036387 -22.143186
Obj: 2018 5 10 19 81.652243 68.319842
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2018 5 10 19 236.283081 -14.257143
Obj: 2018 5 10 19 8.185047 23.140863
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2018 5 10 19 104.592770 10.504298
Obj: 2018 5 10 19 285.212739 -56.782275
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2018 5 10 19 140.806075 31.562641
Obj: 2018 5 10 19 13.771300 -26.282659
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger831810/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 May 10 15:42:23 EDT 2018