TDRSS lightcurve for Trigger=1131910

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 28 Oct 22 13:16:48 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     1131910,   Seg_Num: 0
GRB_RA:          314.206d {+20h 56m 49s} (J2000),
                 314.419d {+20h 57m 41s} (current),
                 313.739d {+20h 54m 57s} (1950)
GRB_DEC:         +41.066d {+41d 03' 56"} (J2000),
                 +41.154d {+41d 09' 16"} (current),
                 +40.872d {+40d 52' 20"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       3704 [cnts]    Image_Peak=164 [image_cnts]
TRIGGER_DUR:     1.024 [sec] 
TRIGGER_INDEX:   155     E_range: 50-350 keV
BKG_INTEN:       15376 [cnts]
BKG_TIME:        47769.88 SOD {13:16:09.88} UT
BKG_DUR:         8 [sec]
GRB_DATE:        19880 TJD;   301 DOY;   22/10/28
GRB_TIME:        47787.67 SOD {13:16:27.67} UT
GRB_PHI:          55.98 [deg]
GRB_THETA:        30.64 [deg]
SOLN_STATUS:     0x2003
RATE_SIGNIF:     36.78 [sigma]
IMAGE_SIGNIF:    7.77 [sigma]
MERIT_PARAMS:     +1  +0  +0  +0  +3  -2  +0  +1 +29  +0 
SUN_POSTN:       212.81d {+14h 11m 15s}  -13.22d {-13d 13' 10"}
SUN_DIST:        107.33 [deg]   Sun_angle= -6.8 [hr] (East of Sun)
MOON_POSTN:      254.00d {+16h 56m 00s}  -25.36d {-25d 21' 44"}
MOON_DIST:        86.90 [deg]
MOON_ILLUM:      12 [%]
GAL_COORDS:       82.79, -2.84 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      335.95, 54.86 [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:        There is a bright star (mag=3.94) 7.27 arcmin from this position.  
COMMENTS:        This is a GRB.  
COMMENTS:        This trigger occurred at longitude,latitude = 63.21,-8.74 [deg].

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 28 Oct 22 13:34:00 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     1131910,   Seg_Num: 0
GRB_RA:          314.206d {+20h 56m 49s} (J2000),
                 314.419d {+20h 57m 41s} (current),
                 313.739d {+20h 54m 57s} (1950)
GRB_DEC:         +41.066d {+41d 03' 56"} (J2000),
                 +41.154d {+41d 09' 16"} (current),
                 +40.872d {+40d 52' 20"} (1950)
GRB_DATE:        19880 TJD;   301 DOY;   22/10/28
GRB_TIME:        47787.67 SOD {13:16:27.67} UT
TRIGGER_INDEX:   155
GRB_PHI:          55.98 [deg]
GRB_THETA:        30.64 [deg]
DELTA_TIME:      -18.00 [sec]
TRIGGER_DUR:     1.024 [sec] 
SOLN_STATUS:     0x2003
RATE_SIGNIF:     36.78 [sigma]
IMAGE_SIGNIF:    7.77 [sigma]
LC_URL:          sw01131910000msb.lc

GCN template for BAT paragraph

  • Click here! 
    At 13:16:27 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 221028 ***A*** (trigger=1131910).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 314.206, +41.066 which is 
   RA(J2000) = 20h 56m 49s
   Dec(J2000) = +41d 03' 56"
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 ~2367 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 T90 duration: 66.56 s +/- 2.89772 s
  Estimated T50 duration: 20.864 s +/- 2.048 s
  Estimated Peak Interval: MET   688655818.75200009 +/- 0.500000 s
  Estimated background rate 1:     2199.261 near MET 688655805.504000 s
  Estimated background rate 2:     2213.516 near MET 688655952.320000 s
  Estimated total duration: 83.712 s (for data selection)
       (from MET 688655817.408000 to MET 688655901.120000)
  Estimated total fluence: 16832.515979 count
  Created GTI with 12 entries
------------------------------------------

    Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)

    bat_grb_pos_cat.sh 314.206 41.066 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 314.206 41.066
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: 2022 10 28 13 301.086063  14.636637
 Obj: 2022 10 28 13 195.111130  -7.819394
  • the object visibility at GSFC, Greenbelt, Maryland 
     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2022 10 28 13 280.137306  -8.880221
 Obj: 2022 10 28 13 169.123519  -16.066235
  • the object visibility at MMT, Mt. Hopkins, Arizona 
     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2022 10 28 13 276.734258  -14.114105
 Obj: 2022 10 28 13 164.717678  -13.301628
  • the object visibility at Hale Telescope, Palomar Mt., California 
     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2022 10 28 13 267.757675  -48.297963
 Obj: 2022 10 28 13 139.523688  -8.462696
  • the object visibility at Mauna Kea, Hawaii 
     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2022 10 28 13 16.838405  -43.958359
 Obj: 2022 10 28 13 136.359718  -4.634947
  • the object visibility at Siding Spring Obs., Australia 
     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2022 10 28 13 121.785430  -56.305188
 Obj: 2022 10 28 13 114.962594  50.886294
  • the object visibility at Tokyo, Japan 
     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2022 10 28 13 0.983703  47.994193
 Obj: 2022 10 28 13 228.865730  10.993910
  • the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain 
     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2022 10 28 13 262.439366  38.866480
 Obj: 2022 10 28 13 235.554982  -66.455074
  • the object visibility at Gemini South, Cerro Pachon, Chile 
     
 
 
The data/results are in /local/data/bat1/prebascript/trigger1131910/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:
Fri Oct 28 09:34:22 EDT 2022