TDRSS lightcurve for Trigger=932742

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 01 Nov 19 21:08:31 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     932742,   Seg_Num: 0
GRB_RA:          251.844d {+16h 47m 23s} (J2000),
                 251.998d {+16h 47m 59s} (current),
                 251.457d {+16h 45m 50s} (1950)
GRB_DEC:         +43.754d {+43d 45' 15"} (J2000),
                 +43.720d {+43d 43' 12"} (current),
                 +43.842d {+43d 50' 31"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       5641 [cnts]    Image_Peak=172 [image_cnts]
TRIGGER_DUR:     2.048 [sec] 
TRIGGER_INDEX:   262     E_range: 25-100 keV
BKG_INTEN:       54970 [cnts]
BKG_TIME:        76048.15 SOD {21:07:28.15} UT
BKG_DUR:         24 [sec]
GRB_DATE:        18788 TJD;   305 DOY;   19/11/01
GRB_TIME:        76083.35 SOD {21:08:03.35} UT
GRB_PHI:         172.71 [deg]
GRB_THETA:        40.75 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     8.24 [sigma]
IMAGE_SIGNIF:    7.15 [sigma]
MERIT_PARAMS:     +1  +0  +0  +1  +2  -3  +0  +0 -39  +0 
SUN_POSTN:       216.76d {+14h 27m 02s}  -14.54d {-14d 32' 36"}
SUN_DIST:         66.56 [deg]   Sun_angle= -2.3 [hr] (East of Sun)
MOON_POSTN:      280.96d {+18h 43m 51s}  -23.02d {-23d 01' 09"}
MOON_DIST:        71.84 [deg]
MOON_ILLUM:      26 [%]
GAL_COORDS:       68.69, 40.28 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      237.60, 65.16 [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 = 240.59,16.90 [deg].

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 01 Nov 19 21:33:07 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     932742,   Seg_Num: 0
GRB_RA:          251.844d {+16h 47m 23s} (J2000),
                 251.998d {+16h 47m 59s} (current),
                 251.457d {+16h 45m 50s} (1950)
GRB_DEC:         +43.754d {+43d 45' 15"} (J2000),
                 +43.720d {+43d 43' 12"} (current),
                 +43.842d {+43d 50' 31"} (1950)
GRB_DATE:        18788 TJD;   305 DOY;   19/11/01
GRB_TIME:        76083.35 SOD {21:08:03.35} UT
TRIGGER_INDEX:   262
GRB_PHI:         172.71 [deg]
GRB_THETA:        40.75 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     


 GCN template for BAT paragraph 


  •  Click here! 

    At 21:08:03 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 191101 ***A*** (trigger=932742).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 251.844, +43.754 which is 
   RA(J2000) = 16h 47m 23s
   Dec(J2000) = +43d 45' 15"
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 ~1257 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
    




    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: 49.92 s +/- 45.488 s
  Estimated T50 duration: 3.2 s +/- 1.6 s
  Estimated Peak Interval: MET   594335308.09599996 +/- 0.500000 s
  Estimated background rate 1:     4542.188 near MET 594335286.400000 s
  Estimated background rate 2:     4909.749 near MET 594335398.912000 s
  Estimated total duration: 97.024 s (for data selection)
       (from MET 594335289.600000 to MET 594335386.624000)
  Estimated total fluence: 979.614646 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 251.844 43.754 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 251.844 43.754
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: 2019 11 1 21 60.424355  11.395581
 Obj: 2019 11 1 21 111.960123  69.650865
  • the object visibility at GSFC, Greenbelt, Maryland 
     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2019 11 1 21 34.152789  36.634713
 Obj: 2019 11 1 21 204.054734  76.583787
  • the object visibility at MMT, Mt. Hopkins, Arizona 
     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2019 11 1 21 26.986020  37.768668
 Obj: 2019 11 1 21 221.462638  75.230692
  • the object visibility at Hale Telescope, Palomar Mt., California 
     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2019 11 1 21 332.989867  51.803586
 Obj: 2019 11 1 21 228.786656  40.676691
  • the object visibility at Mauna Kea, Hawaii 
     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2019 11 1 21 273.849595  22.400512
 Obj: 2019 11 1 21 235.285692  -33.075961
  • the object visibility at Siding Spring Obs., Australia 
     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2019 11 1 21 282.660055  -7.342332
 Obj: 2019 11 1 21 216.784792  3.144126
  • the object visibility at Tokyo, Japan 
     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2019 11 1 21 91.215557  -33.701039
 Obj: 2019 11 1 21 128.764542  22.444283
  • the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain 
     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2019 11 1 21 88.033736  26.382517
 Obj: 2019 11 1 21 156.836136  10.198677
  • the object visibility at Gemini South, Cerro Pachon, Chile 
     
 
 
The data/results are in /local/data/bat1/prebascript/trigger932742/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 Nov  1 17:34:03 EDT 2019