TDRSS lightcurve for Trigger=755867

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 04 Jun 17 19:09:34 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     755867,   Seg_Num: 0
GRB_RA:          342.645d {+22h 50m 35s} (J2000),
                 342.876d {+22h 51m 30s} (current),
                 341.981d {+22h 47m 55s} (1950)
GRB_DEC:         -15.414d {-15d 24' 50"} (J2000),
                 -15.322d {-15d 19' 17"} (current),
                 -15.680d {-15d 40' 45"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       13046 [cnts]    Image_Peak=219 [image_cnts]
TRIGGER_DUR:     4.096 [sec] 
TRIGGER_INDEX:   307     E_range: 50-350 keV
BKG_INTEN:       93792 [cnts]
BKG_TIME:        68876.83 SOD {19:07:56.83} UT
BKG_DUR:         40 [sec]
GRB_DATE:        17908 TJD;   155 DOY;   17/06/04
GRB_TIME:        68930.40 SOD {19:08:50.40} UT
GRB_PHI:         165.47 [deg]
GRB_THETA:        52.39 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     30.62 [sigma]
IMAGE_SIGNIF:    7.97 [sigma]
MERIT_PARAMS:     +1  +0  +0  +2  +3  -2  +0  +0 +10  +0 
SUN_POSTN:        73.02d {+04h 52m 05s}  +22.52d {+22d 31' 07"}
SUN_DIST:         95.94 [deg]   Sun_angle= 6.0 [hr] (West of Sun)
MOON_POSTN:      201.96d {+13h 27m 52s}   -4.79d {-04d 47' 05"}
MOON_DIST:       136.38 [deg]
MOON_ILLUM:      81 [%]
GAL_COORDS:       49.39,-59.61 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      338.12, -7.44 [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 = 224.74,-1.67 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 04 Jun 17 19:39:03 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     755867,   Seg_Num: 0
GRB_RA:          342.645d {+22h 50m 35s} (J2000),
                 342.876d {+22h 51m 30s} (current),
                 341.981d {+22h 47m 55s} (1950)
GRB_DEC:         -15.414d {-15d 24' 50"} (J2000),
                 -15.322d {-15d 19' 17"} (current),
                 -15.680d {-15d 40' 45"} (1950)
GRB_DATE:        17908 TJD;   155 DOY;   17/06/04
GRB_TIME:        68930.40 SOD {19:08:50.40} UT
TRIGGER_INDEX:   307
GRB_PHI:         165.47 [deg]
GRB_THETA:        52.39 [deg]
DELTA_TIME:      -76.00 [sec]
TRIGGER_DUR:     4.096 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     30.62 [sigma]
IMAGE_SIGNIF:    7.97 [sigma]
LC_URL:          sw00755867000msb.lc

GCN template for BAT paragraph

  • Click here!
    At 19:08:50 UT, the Swift Burst Alert Telescope (BAT) triggered and
    located GRB 170604 ***A*** (trigger=755867).  Swift slewed immediately to the burst.
    The BAT on-board calculated location is 
    RA, Dec 342.645, -15.414 which is 
       RA(J2000) = 22h 50m 35s
       Dec(J2000) = -15d 24' 50"
    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 ~2468 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

    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: 24.576 s +/- 1.14576 s
      Estimated T50 duration: 8.128 s +/- 0.243705 s
      Estimated Peak Interval: MET   518296150.84799999 +/- 0.500000 s
      Estimated background rate 1:     5173.661 near MET 518296130.400000 s
      Estimated background rate 2:     5098.228 near MET 518296251.648000 s
      Estimated total duration: 32.576 s (for data selection)
           (from MET 518296136.000000 to MET 518296168.576000)
      Estimated total fluence: 16348.068961 count
      Created GTI with 13 entries
    ------------------------------------------
     
    

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

    bat_grb_pos_cat.sh 342.645 -15.414 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: 2017 6 4 19 63.585597  61.008296
     Obj: 2017 6 4 19 95.446790  -31.360392
    
  • the object visibility at GSFC, Greenbelt, Maryland
     
    MMT Observatory, Mt. Hopkins, Arizona
          TimeUT       Azimuth     Elevation
     Sun: 2017 6 4 19 328.388702  79.402450
     Obj: 2017 6 4 19 73.927336  -3.201881
    
  • the object visibility at MMT, Mt. Hopkins, Arizona
     
    Hale Telescope, Palomar Mountain, California
          TimeUT       Azimuth     Elevation
     Sun: 2017 6 4 19 312.699512  74.880575
     Obj: 2017 6 4 19 70.763491  1.101330
    
  • the object visibility at Hale Telescope, Palomar Mt., California
     
    Mauna Kea, Hawaii
          TimeUT       Azimuth     Elevation
     Sun: 2017 6 4 19 257.258476  42.963098
     Obj: 2017 6 4 19 50.815634  37.536257
    
  • the object visibility at Mauna Kea, Hawaii
     
    Siding Spring Obs., Australia
          TimeUT       Azimuth     Elevation
     Sun: 2017 6 4 19 257.617405  -24.680348
     Obj: 2017 6 4 19 225.907580  68.408548
    
  • the object visibility at Siding Spring Obs., Australia
     
    Tokyo, Japan
          TimeUT       Azimuth     Elevation
     Sun: 2017 6 4 19 232.455955  -11.264990
     Obj: 2017 6 4 19 322.581662  31.418944
    
  • the object visibility at Tokyo, Japan
     
    William Herschel Telescope, La Palma, Canary Islands, Spain
          TimeUT       Azimuth     Elevation
     Sun: 2017 6 4 19 108.728515  13.054896
     Obj: 2017 6 4 19 168.328194  -76.322494
    
  • the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
     
    Gemini South, Cerro Pachon, Chile
          TimeUT       Azimuth     Elevation
     Sun: 2017 6 4 19 144.323820  27.878041
     Obj: 2017 6 4 19 57.920968  -19.466015
    
  • the object visibility at Gemini South, Cerro Pachon, Chile
     
     
     
    The data/results are in /local/data/bat1/prebascript/trigger755867/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:
    Sun Jun  4 15:42:09 EDT 2017