TDRSS lightcurve for Trigger=1059881

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 12 Jul 21 09:43:32 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     1059881,   Seg_Num: 0
GRB_RA:           97.337d {+06h 29m 21s} (J2000),
                  97.528d {+06h 30m 07s} (current),
                  96.893d {+06h 27m 34s} (1950)
GRB_DEC:         -35.393d {-35d 23' 33"} (J2000),
                 -35.408d {-35d 24' 29"} (current),
                 -35.358d {-35d 21' 29"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       3333 [cnts]    Image_Peak=287 [image_cnts]
TRIGGER_DUR:     1.024 [sec] 
TRIGGER_INDEX:   146     E_range: 25-100 keV
BKG_INTEN:       16354 [cnts]
BKG_TIME:        34980.64 SOD {09:43:00.64} UT
BKG_DUR:         8 [sec]
GRB_DATE:        19407 TJD;   193 DOY;   21/07/12
GRB_TIME:        34991.90 SOD {09:43:11.90} UT
GRB_PHI:         -150.81 [deg]
GRB_THETA:        31.77 [deg]
SOLN_STATUS:     0x20000003
RATE_SIGNIF:     25.49 [sigma]
IMAGE_SIGNIF:    13.19 [sigma]
MERIT_PARAMS:     +1  +0  +0  +0  +2  +2  +0  +0 -51  +0 
SUN_POSTN:       111.93d {+07h 27m 44s}  +21.91d {+21d 54' 20"}
SUN_DIST:         58.92 [deg]   Sun_angle= 1.0 [hr] (West of Sun)
MOON_POSTN:      141.83d {+09h 27m 20s}  +20.02d {+20d 00' 57"}
MOON_DIST:        69.53 [deg]
MOON_ILLUM:      6 [%]
GAL_COORDS:      243.52,-19.51 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      101.51,-58.54 [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 = 65.83,-11.07 [deg].  
COMMENTS:           
COMMENTS:        NOTE: This BAT event is temporally(1.0<100sec) coincident with the FERMI_GBM event (trignum=647775795).

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 12 Jul 21 10:00:19 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     1059881,   Seg_Num: 0
GRB_RA:           97.337d {+06h 29m 21s} (J2000),
                  97.528d {+06h 30m 07s} (current),
                  96.893d {+06h 27m 34s} (1950)
GRB_DEC:         -35.393d {-35d 23' 33"} (J2000),
                 -35.408d {-35d 24' 29"} (current),
                 -35.358d {-35d 21' 29"} (1950)
GRB_DATE:        19407 TJD;   193 DOY;   21/07/12
GRB_TIME:        34991.90 SOD {09:43:11.90} UT
TRIGGER_INDEX:   146
GRB_PHI:         -150.81 [deg]
GRB_THETA:        31.77 [deg]
DELTA_TIME:      -5.00 [sec]
TRIGGER_DUR:     1.024 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     25.49 [sigma]
IMAGE_SIGNIF:    13.19 [sigma]
LC_URL:          sw01059881000msb.lc

GCN template for BAT paragraph

  • Click here! 
    At 09:43:11 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 210712 ***A*** (trigger=1059881).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 97.337, -35.393 which is 
   RA(J2000) = 06h 29m 21s
   Dec(J2000) = -35d 23' 33"
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 ~2594 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

    Extended TDRSS lc No.4

    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: 111.872 s +/- 13.4699 s
  Estimated T50 duration: 53.248 s +/- 4.096 s
  Estimated Peak Interval: MET   647775867.90399992 +/- 0.500000 s
  Estimated background rate 1:     4361.875 near MET 647775800.000000 s
  Estimated background rate 2:     3785.911 near MET 647775982.592000 s
  Estimated total duration: 155.264 s (for data selection)
       (from MET 647775804.800000 to MET 647775960.064000)
  Estimated total fluence: 18312.139656 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 97.337 -35.393 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 97.337 -35.393
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 7 12 10 241.430875  0.104752
 Obj: 2021 7 12 10 296.831957  -24.429188
  • the object visibility at GSFC, Greenbelt, Maryland 
     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2021 7 12 10 218.474544  -25.681599
 Obj: 2021 7 12 10 289.577387  -47.328555
  • the object visibility at MMT, Mt. Hopkins, Arizona 
     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2021 7 12 10 212.731684  -27.265681
 Obj: 2021 7 12 10 286.323575  -52.638307
  • the object visibility at Hale Telescope, Palomar Mt., California 
     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2021 7 12 10 169.802825  -47.657635
 Obj: 2021 7 12 10 339.746709  -73.249582
  • the object visibility at Mauna Kea, Hawaii 
     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2021 7 12 10 96.844419  -33.777752
 Obj: 2021 7 12 10 38.160625  -9.316239
  • the object visibility at Siding Spring Obs., Australia 
     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2021 7 12 10 113.872842  4.033738
 Obj: 2021 7 12 10 68.991783  -37.695122
  • the object visibility at Tokyo, Japan 
     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2021 7 12 10 266.838840  44.759634
 Obj: 2021 7 12 10 330.307563  17.655636
  • the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain 
     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2021 7 12 10 256.480698  -21.583759
 Obj: 2021 7 12 10 300.979487  18.101989
  • the object visibility at Gemini South, Cerro Pachon, Chile 
     
 
 
The data/results are in /local/data/bat1/prebascript/trigger1059881/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:
Mon Jul 12 06:02:23 EDT 2021