TDRSS lightcurve for Trigger=965484
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Thu 09 Apr 20 03:20:20 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 965484, Seg_Num: 0
GRB_RA: 60.553d {+04h 02m 13s} (J2000),
60.695d {+04h 02m 47s} (current),
60.204d {+04h 00m 49s} (1950)
GRB_DEC: -50.247d {-50d 14' 49"} (J2000),
-50.192d {-50d 11' 29"} (current),
-50.385d {-50d 23' 04"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 1850 [cnts] Image_Peak=116 [image_cnts]
TRIGGER_DUR: 0.512 [sec]
TRIGGER_INDEX: 121 E_range: 15-50 keV
BKG_INTEN: 19466 [cnts]
BKG_TIME: 11983.25 SOD {03:19:43.25} UT
BKG_DUR: 8 [sec]
GRB_DATE: 18948 TJD; 100 DOY; 20/04/09
GRB_TIME: 11999.77 SOD {03:19:59.77} UT
GRB_PHI: -69.33 [deg]
GRB_THETA: 19.52 [deg]
SOLN_STATUS: 0x3
RATE_SIGNIF: 16.55 [sigma]
IMAGE_SIGNIF: 7.58 [sigma]
MERIT_PARAMS: +1 +0 +0 -1 +1 -2 +0 +0 -36 +0
SUN_POSTN: 18.23d {+01h 12m 55s} +7.72d {+07d 43' 17"}
SUN_DIST: 68.61 [deg] Sun_angle= -2.8 [hr] (East of Sun)
MOON_POSTN: 213.73d {+14h 14m 54s} -9.06d {-09d 03' 22"}
MOON_DIST: 116.27 [deg]
MOON_ILLUM: 98 [%]
GAL_COORDS: 258.83,-47.19 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 33.12,-67.95 [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 = 201.05,-18.14 [deg].
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Thu 09 Apr 20 03:40:35 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 965484, Seg_Num: 0
GRB_RA: 60.553d {+04h 02m 13s} (J2000),
60.695d {+04h 02m 47s} (current),
60.204d {+04h 00m 49s} (1950)
GRB_DEC: -50.247d {-50d 14' 49"} (J2000),
-50.192d {-50d 11' 29"} (current),
-50.385d {-50d 23' 04"} (1950)
GRB_DATE: 18948 TJD; 100 DOY; 20/04/09
GRB_TIME: 11999.77 SOD {03:19:59.77} UT
TRIGGER_INDEX: 121
GRB_PHI: -69.33 [deg]
GRB_THETA: 19.52 [deg]
DELTA_TIME: -50.00 [sec]
TRIGGER_DUR: 0.512 [sec]
SOLN_STATUS: 0x3
RATE_SIGNIF: 16.55 [sigma]
IMAGE_SIGNIF: 7.58 [sigma]
LC_URL: sw00965484000msb.lc
GCN template for BAT paragraph
Click here!
At 03:19:59 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 200409 ***A*** (trigger=965484). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 60.553, -50.247 which is
RA(J2000) = 04h 02m 13s
Dec(J2000) = -50d 14' 49"
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 ~2234 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: 26.048 s +/- 4.44201 s
Estimated T50 duration: 10.88 s +/- 0.256 s
Estimated Peak Interval: MET 608095225.02399993 +/- 0.500000 s
Estimated background rate 1: 4407.509 near MET 608095210.720000 s
Estimated background rate 2: 4290.582 near MET 608095336.192000 s
Estimated total duration: 41.024 s (for data selection)
(from MET 608095221.440000 to MET 608095262.464000)
Estimated total fluence: 4118.518226 count
Created GTI with 7 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 60.553 -50.247 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 60.553 -50.247
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: 2020 4 9 3 139.536858 -34.289474
Obj: 2020 4 9 3 51.392818 -37.630484
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2020 4 9 3 109.341949 -15.224176
Obj: 2020 4 9 3 38.329679 -12.975033
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2020 4 9 3 106.133796 -9.912709
Obj: 2020 4 9 3 36.185971 -11.245187
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2020 4 9 3 90.245938 22.610504
Obj: 2020 4 9 3 17.104004 16.215703
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2020 4 9 3 159.854099 48.979444
Obj: 2020 4 9 3 319.478582 61.154850
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2020 4 9 3 352.446717 63.115359
Obj: 2020 4 9 3 332.555587 -3.850652
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2020 4 9 3 218.765606 -45.640979
Obj: 2020 4 9 3 25.366004 -65.299498
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2020 4 9 3 53.576296 -56.198790
Obj: 2020 4 9 3 37.630652 11.097986
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger965484/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 Apr 8 23:41:03 EDT 2020