TDRSS lightcurve for Trigger=843211
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Wed 20 Jun 18 15:50:55 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 843211, Seg_Num: 0
GRB_RA: 357.517d {+23h 50m 04s} (J2000),
357.760d {+23h 51m 02s} (current),
356.854d {+23h 47m 25s} (1950)
GRB_DEC: -57.957d {-57d 57' 25"} (J2000),
-57.854d {-57d 51' 15"} (current),
-58.235d {-58d 14' 06"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 7191 [cnts] Image_Peak=870 [image_cnts]
TRIGGER_DUR: 1.024 [sec]
TRIGGER_INDEX: 146 E_range: 25-100 keV
BKG_INTEN: 26620 [cnts]
BKG_TIME: 57018.86 SOD {15:50:18.86} UT
BKG_DUR: 8 [sec]
GRB_DATE: 18289 TJD; 171 DOY; 18/06/20
GRB_TIME: 57037.16 SOD {15:50:37.16} UT
GRB_PHI: -176.70 [deg]
GRB_THETA: 30.39 [deg]
SOLN_STATUS: 0x20000003
RATE_SIGNIF: 59.04 [sigma]
IMAGE_SIGNIF: 16.36 [sigma]
MERIT_PARAMS: +1 +0 +0 +0 +2 +4 +0 +0 +35 +0
SUN_POSTN: 89.21d {+05h 56m 51s} +23.43d {+23d 26' 04"}
SUN_DIST: 110.43 [deg] Sun_angle= 6.1 [hr] (West of Sun)
MOON_POSTN: 183.50d {+12h 14m 00s} +3.11d {+03d 06' 32"}
MOON_DIST: 125.07 [deg]
MOON_ILLUM: 53 [%]
GAL_COORDS: 318.01,-57.34 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 325.94,-50.22 [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 = 228.51,-18.51 [deg].
COMMENTS:
COMMENTS: NOTE: This BAT event is temporally(1.0<100sec) coincident with the FERMI_GBM event (trignum=551202641).
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Wed 20 Jun 18 16:08:28 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 843211, Seg_Num: 0
GRB_RA: 357.517d {+23h 50m 04s} (J2000),
357.760d {+23h 51m 02s} (current),
356.854d {+23h 47m 25s} (1950)
GRB_DEC: -57.957d {-57d 57' 25"} (J2000),
-57.854d {-57d 51' 15"} (current),
-58.235d {-58d 14' 06"} (1950)
GRB_DATE: 18289 TJD; 171 DOY; 18/06/20
GRB_TIME: 57037.16 SOD {15:50:37.16} UT
TRIGGER_INDEX: 146
GRB_PHI: -176.70 [deg]
GRB_THETA: 30.39 [deg]
DELTA_TIME: -70.00 [sec]
TRIGGER_DUR: 1.024 [sec]
SOLN_STATUS: 0x3
RATE_SIGNIF: 59.04 [sigma]
IMAGE_SIGNIF: 16.36 [sigma]
LC_URL: sw00843211000msb.lc
GCN template for BAT paragraph
Click here!
At 15:50:37 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 180620 ***A*** (trigger=843211). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 357.517, -57.957 which is
RA(J2000) = 23h 50m 04s
Dec(J2000) = -57d 57' 25"
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 ~9323 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
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: 104.32 s +/- 2.89772 s
Estimated T50 duration: 44.544 s +/- 4.098 s
Estimated Peak Interval: MET 551202698.11199999 +/- 0.500000 s
Estimated background rate 1: 8848.750 near MET 551202635.200000 s
Estimated background rate 2: 8239.502 near MET 551202841.472000 s
Estimated total duration: 202.624 s (for data selection)
(from MET 551202636.800000 to MET 551202839.424000)
Estimated total fluence: 143245.930708 count
Created GTI with 90 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 357.517 -57.957 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 6 20 16 310.652777 68.308973
Obj: 2018 6 20 16 34.175090 -24.658920
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2018 6 20 16 266.789626 43.755845
Obj: 2018 6 20 16 19.956776 -5.561658
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2018 6 20 16 265.336895 38.834151
Obj: 2018 6 20 16 17.250531 -5.530275
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2018 6 20 16 245.852076 2.213687
Obj: 2018 6 20 16 357.332719 12.167145
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2018 6 20 16 280.471686 -63.888252
Obj: 2018 6 20 16 321.763642 41.616833
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2018 6 20 16 192.388444 -31.153167
Obj: 2018 6 20 16 325.920759 -22.339228
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2018 6 20 16 91.592923 52.768978
Obj: 2018 6 20 16 34.516039 -46.370060
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2018 6 20 16 193.340577 34.993514
Obj: 2018 6 20 16 37.492639 30.679382
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger843211/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:
Wed Jun 20 12:08:43 EDT 2018