TDRSS lightcurve for Trigger=1197311

Notes:

GCN BAT Position Notice



GCN BAT Lightcurve Notice


TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 18 Nov 23 17:48:47 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     1197311,   Seg_Num: 0
GRB_RA:            4.843d {+00h 19m 22s} (J2000),
                   5.136d {+00h 20m 33s} (current),
                   4.227d {+00h 16m 54s} (1950)
GRB_DEC:         -48.035d {-48d 02' 07"} (J2000),
                 -47.903d {-47d 54' 10"} (current),
                 -48.313d {-48d 18' 46"} (1950)
GRB_DATE:        20266 TJD;   322 DOY;   23/11/18
GRB_TIME:        62193.20 SOD {17:16:33.20} UT
TRIGGER_INDEX:   148
GRB_PHI:         -134.22 [deg]
GRB_THETA:        33.64 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     


 GCN template for BAT paragraph 


  •  Click here! 

    At 17:16:33 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 231118 ***A*** (trigger=1197311).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 4.843, -48.035 which is 
   RA(J2000) = 00h 19m 22s
   Dec(J2000) = -48d 02' 07"
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 ~10845 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
    




    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: 5.76 s +/- 0.243705 s
  Estimated T50 duration: 2.368 s +/- 0.243705 s
  Estimated Peak Interval: MET   722020626.11199999 +/- 0.500000 s
  Estimated background rate 1:     3325.682 near MET 722020610.400000 s
  Estimated background rate 2:     3683.093 near MET 722020631.104000 s
  Estimated total duration: 9.408 s (for data selection)
       (from MET 722020619.200000 to MET 722020628.608000)
  Estimated total fluence: 22069.747508 count
  Created GTI with 14 entries
------------------------------------------
 

    

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

    bat_grb_pos_cat.sh 4.843 -48.035 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 4.843 -48.035
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: 2023 11 18 17 1.480204  31.669946
 Obj: 2023 11 18 17 300.737414  -53.350677

    

  •  the object visibility at GSFC, Greenbelt, Maryland

     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2023 11 18 17 323.889732  30.147583
 Obj: 2023 11 18 17 327.796601  -69.763949

    

  •  the object visibility at MMT, Mt. Hopkins, Arizona 

     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2023 11 18 17 319.123959  25.701755
 Obj: 2023 11 18 17 335.643712  -73.637342

    

  •  the object visibility at Hale Telescope, Palomar Mt., California

     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2023 11 18 17 292.499254  4.777416
 Obj: 2023 11 18 17 32.794248  -53.668419

    

  •  the object visibility at Mauna Kea, Hawaii 

     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2023 11 18 17 311.553606  -22.101854
 Obj: 2023 11 18 17 44.863190  19.006742

    

  •  the object visibility at Siding Spring Obs., Australia 

     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2023 11 18 17 248.848884  -58.939878
 Obj: 2023 11 18 17 43.984255  -18.490354

    

  •  the object visibility at Tokyo, Japan 

     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2023 11 18 17 57.913314  14.485147
 Obj: 2023 11 18 17 319.992233  -9.584106

    

  •  the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain

     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2023 11 18 17 147.688843  77.143606
 Obj: 2023 11 18 17 326.246227  2.836790

    

  •  the object visibility at Gemini South, Cerro Pachon, Chile 

     
 
 
The data/results are in /local/data/bat1/prebascript/trigger1197311/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:
Sat Nov 18 12:49:02 EST 2023