TDRSS lightcurve for Trigger=1078701

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 10 Oct 21 10:42:52 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     1078701,   Seg_Num: 0
GRB_RA:          287.080d {+19h 08m 19s} (J2000),
                 287.293d {+19h 09m 10s} (current),
                 286.592d {+19h 06m 22s} (1950)
GRB_DEC:         +29.822d {+29d 49' 19"} (J2000),
                 +29.858d {+29d 51' 28"} (current),
                 +29.741d {+29d 44' 29"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       137 [cnts]    Image_Peak=21 [image_cnts]
TRIGGER_DUR:     0.064 [sec] 
TRIGGER_INDEX:   10400     E_range: 15-25 keV
BKG_INTEN:       10486 [cnts]
BKG_TIME:        38540.12 SOD {10:42:20.12} UT
BKG_DUR:         8 [sec]
GRB_DATE:        19497 TJD;   283 DOY;   21/10/10
GRB_TIME:        38555.80 SOD {10:42:35.80} UT
GRB_PHI:          -8.17 [deg]
GRB_THETA:        46.61 [deg]
SOLN_STATUS:     0x83
RATE_SIGNIF:     6.48 [sigma]
IMAGE_SIGNIF:    6.50 [sigma]
MERIT_PARAMS:     +1  +0  +0  -4  +0  -4  +0  +1  +7  +0 
SUN_POSTN:       196.00d {+13h 04m 00s}   -6.81d {-06d 48' 44"}
SUN_DIST:         94.50 [deg]   Sun_angle= -6.1 [hr] (East of Sun)
MOON_POSTN:      249.94d {+16h 39m 46s}  -22.84d {-22d 50' 21"}
MOON_DIST:        63.76 [deg]
MOON_ILLUM:      21 [%]
GAL_COORDS:       61.53,  9.78 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      294.35, 51.83 [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:        Since the IMAGE_SIGNIF is less than 7 sigma, this is a questionable detection.  
COMMENTS:        This trigger occurred at longitude,latitude = 185.47,19.99 [deg].  
COMMENTS:        This AT will self-cancel at the end of the first orbit (ie I_signif<7.0 && Trig_dur<65msec).

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 10 Oct 21 10:49:42 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     1078701,   Seg_Num: 0
GRB_RA:          287.080d {+19h 08m 19s} (J2000),
                 287.293d {+19h 09m 10s} (current),
                 286.592d {+19h 06m 22s} (1950)
GRB_DEC:         +29.822d {+29d 49' 19"} (J2000),
                 +29.858d {+29d 51' 28"} (current),
                 +29.741d {+29d 44' 29"} (1950)
GRB_DATE:        19497 TJD;   283 DOY;   21/10/10
GRB_TIME:        38556.02 SOD {10:42:36.02} UT
TRIGGER_INDEX:   10400
GRB_PHI:          -8.17 [deg]
GRB_THETA:        46.61 [deg]
DELTA_TIME:      10.00 [sec]
TRIGGER_DUR:     0.064 [sec] 
SOLN_STATUS:     0x83
RATE_SIGNIF:     6.48 [sigma]
IMAGE_SIGNIF:    6.50 [sigma]
LC_URL:          sw01078701000msb.lc

GCN template for BAT paragraph

  • Click here! 
    At 10:42:36 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 211010 ***A*** (trigger=1078701).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 287.080, +29.822 which is 
   RA(J2000) = 19h 08m 19s
   Dec(J2000) = +29d 49' 19"
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 ~820 counts/sec (15-350 keV), at ~171 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: 49.152 s +/- 5.632 s
  Estimated T50 duration: 28.672 s +/- 4.096 s
  Estimated Peak Interval: MET   655555432.70400000 +/- 0.500000 s
  Estimated background rate 1:     4654.093 near MET 655555384.576000 s
  Estimated background rate 2:     4916.164 near MET 655555522.816000 s
  Estimated total duration: 66.56 s (for data selection)
       (from MET 655555409.152000 to MET 655555475.712000)
  Estimated total fluence: 11889.395561 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 287.080 29.822 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 287.080 29.822
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: 2021 10 10 10 266.415296  -15.271267
 Obj: 2021 10 10 10 165.810627  -19.686929
  • the object visibility at GSFC, Greenbelt, Maryland 
     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2021 10 10 10 246.556228  -43.761102
 Obj: 2021 10 10 10 137.534081  -12.650376
  • the object visibility at MMT, Mt. Hopkins, Arizona 
     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2021 10 10 10 239.480345  -47.503079
 Obj: 2021 10 10 10 133.871776  -7.935306
  • the object visibility at Hale Telescope, Palomar Mt., California 
     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2021 10 10 10 168.256846  -76.718237
 Obj: 2021 10 10 10 117.360265  13.033726
  • the object visibility at Mauna Kea, Hawaii 
     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2021 10 10 10 66.132715  -22.740673
 Obj: 2021 10 10 10 151.572832  22.298067
  • the object visibility at Siding Spring Obs., Australia 
     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2021 10 10 10 92.955189  -16.413785
 Obj: 2021 10 10 10 72.691857  77.390829
  • the object visibility at Tokyo, Japan 
     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2021 10 10 10 302.077308  33.837747
 Obj: 2021 10 10 10 218.973569  -18.182495
  • the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain 
     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2021 10 10 10 280.038511  -3.627236
 Obj: 2021 10 10 10 89.084773  -81.742506
  • the object visibility at Gemini South, Cerro Pachon, Chile 
     
 
 
The data/results are in /local/data/bat1/prebascript/trigger1078701/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 Oct 10 06:51:24 EDT 2021