TDRSS lightcurve for Trigger=1105560

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 06 May 22 12:10:14 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     1105560,   Seg_Num: 0
GRB_RA:          300.063d {+20h 00m 15s} (J2000),
                 300.274d {+20h 01m 06s} (current),
                 299.590d {+19h 58m 22s} (1950)
GRB_DEC:         +34.906d {+34d 54' 22"} (J2000),
                 +34.969d {+34d 58' 07"} (current),
                 +34.768d {+34d 46' 04"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=1254 [image_cnts]
TRIGGER_DUR:     64.000 [sec] 
TRIGGER_INDEX:   20000     E_range: 15-50 keV
BKG_INTEN:       0 [cnts]
BKG_TIME:        0.00 SOD {00:00:00.00} UT
BKG_DUR:         0 [sec]
GRB_DATE:        19705 TJD;   126 DOY;   22/05/06
GRB_TIME:        43738.91 SOD {12:08:58.91} UT
GRB_PHI:         -12.41 [deg]
GRB_THETA:        51.40 [deg]
SOLN_STATUS:     0x413
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    10.32 [sigma]
MERIT_PARAMS:     +1  +0  +0  +6  +1  +0  +0  +1  +1  +0 
SUN_POSTN:        43.49d {+02h 53m 58s}  +16.61d {+16d 36' 45"}
SUN_DIST:         90.90 [deg]   Sun_angle= 6.9 [hr] (West of Sun)
MOON_POSTN:      110.37d {+07h 21m 29s}  +26.59d {+26d 35' 25"}
MOON_DIST:       117.73 [deg]
MOON_ILLUM:      27 [%]
GAL_COORDS:       71.29,  2.58 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      314.12, 53.84 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Coordinates.  
COMMENTS:        This is an image trigger.  (The RATE_SIGNIF & BKG_{INTEN, TIME, DUR} are undefined.)  
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 = 209.45,4.39 [deg].  
COMMENTS:           
COMMENTS:        This trigger occured while the StarTracker had lost lock, so it is possibly bogus.  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 06 May 22 12:13:09 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     1105560,   Seg_Num: 0
GRB_RA:          300.063d {+20h 00m 15s} (J2000),
                 300.274d {+20h 01m 06s} (current),
                 299.590d {+19h 58m 22s} (1950)
GRB_DEC:         +34.906d {+34d 54' 22"} (J2000),
                 +34.969d {+34d 58' 07"} (current),
                 +34.768d {+34d 46' 04"} (1950)
GRB_DATE:        19705 TJD;   126 DOY;   22/05/06
GRB_TIME:        43738.91 SOD {12:08:58.91} UT
TRIGGER_INDEX:   20000
GRB_PHI:         -12.41 [deg]
GRB_THETA:        51.40 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     64.000 [sec] 
SOLN_STATUS:     0x413
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    10.32 [sigma]
LC_URL:          sw01105560000msb.lc

GCN template for BAT paragraph

  • Click here!
    At 12:08:58 UT, the Swift Burst Alert Telescope (BAT) triggered and
    located GRB 220506 ***A*** (trigger=1105560).  Swift slewed immediately to the burst.
    The BAT on-board calculated location is 
    RA, Dec 300.063, +34.906 which is 
       RA(J2000) = 20h 00m 15s
       Dec(J2000) = +34d 54' 22"
    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 ~958 counts/sec (15-350 keV), at ~179 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

    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: 28.672 s +/- 28.9631 s
      Estimated T50 duration: 28.672 s +/- 28.9631 s
      Estimated Peak Interval: MET   673531890.43199992 +/- 0.500000 s
      Estimated background rate 1:     3909.733 near MET 673531801.856000 s
      Estimated background rate 2:     4307.297 near MET 673531921.152000 s
      Estimated total duration: 28.672 s (for data selection)
           (from MET 673531859.712000 to MET 673531888.384000)
      Estimated total fluence: -818.289258 count
      Created GTI with 4 entries
    ------------------------------------------
     
    

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

    bat_grb_pos_cat.sh 300.063 34.906 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 300.063 34.906
    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 5 6 12 264.979370  20.659101
     Obj: 2022 5 6 12 87.594250  68.379041
    
  • the object visibility at GSFC, Greenbelt, Maryland
     
    MMT Observatory, Mt. Hopkins, Arizona
          TimeUT       Azimuth     Elevation
     Sun: 2022 5 6 12 244.919624  -7.842429
     Obj: 2022 5 6 12 239.808203  83.055753
    
  • the object visibility at MMT, Mt. Hopkins, Arizona
     
    Hale Telescope, Palomar Mountain, California
          TimeUT       Azimuth     Elevation
     Sun: 2022 5 6 12 241.056544  -11.581659
     Obj: 2022 5 6 12 257.942494  78.873981
    
  • the object visibility at Hale Telescope, Palomar Mt., California
     
    Mauna Kea, Hawaii
          TimeUT       Azimuth     Elevation
     Sun: 2022 5 6 12 215.554805  -46.135609
     Obj: 2022 5 6 12 240.318980  42.044426
    
  • the object visibility at Mauna Kea, Hawaii
     
    Siding Spring Obs., Australia
          TimeUT       Azimuth     Elevation
     Sun: 2022 5 6 12 69.330561  -58.609884
     Obj: 2022 5 6 12 245.118728  -30.477362
    
  • the object visibility at Siding Spring Obs., Australia
     
    Tokyo, Japan
          TimeUT       Azimuth     Elevation
     Sun: 2022 5 6 12 130.654264  -22.090765
     Obj: 2022 5 6 12 222.879470  -3.140623
    
  • the object visibility at Tokyo, Japan
     
    William Herschel Telescope, La Palma, Canary Islands, Spain
          TimeUT       Azimuth     Elevation
     Sun: 2022 5 6 12 303.173578  69.807335
     Obj: 2022 5 6 12 120.051558  19.224177
    
  • the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
     
    Gemini South, Cerro Pachon, Chile
          TimeUT       Azimuth     Elevation
     Sun: 2022 5 6 12 245.746109  7.417766
     Obj: 2022 5 6 12 152.383430  17.814290
    
  • the object visibility at Gemini South, Cerro Pachon, Chile
     
     
     
    The data/results are in /local/data/bat1/prebascript/trigger1105560/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 May  6 08:16:23 EDT 2022