TDRSS lightcurve for Trigger=1054681

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 10 Jun 21 20:00:47 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     1054681,   Seg_Num: 0
GRB_RA:          243.939d {+16h 15m 45s} (J2000),
                 244.186d {+16h 16m 45s} (current),
                 243.363d {+16h 13m 27s} (1950)
GRB_DEC:         +14.391d {+14d 23' 29"} (J2000),
                 +14.339d {+14d 20' 21"} (current),
                 +14.515d {+14d 30' 54"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       4340 [cnts]    Image_Peak=210 [image_cnts]
TRIGGER_DUR:     1.024 [sec] 
TRIGGER_INDEX:   155     E_range: 50-350 keV
BKG_INTEN:       16212 [cnts]
BKG_TIME:        71468.82 SOD {19:51:08.82} UT
BKG_DUR:         8 [sec]
GRB_DATE:        19375 TJD;   161 DOY;   21/06/10
GRB_TIME:        71487.51 SOD {19:51:27.51} UT
GRB_PHI:          43.05 [deg]
GRB_THETA:        38.34 [deg]
SOLN_STATUS:     0x20000003
RATE_SIGNIF:     46.52 [sigma]
IMAGE_SIGNIF:    10.54 [sigma]
MERIT_PARAMS:     +1  +0  +0  +0  +3  +0  +0  +0 +76  +0 
SUN_POSTN:        79.29d {+05h 17m 10s}  +23.07d {+23d 04' 14"}
SUN_DIST:        139.78 [deg]   Sun_angle= -11.0 [hr] (East of Sun)
MOON_POSTN:       83.83d {+05h 35m 20s}  +24.52d {+24d 31' 04"}
MOON_DIST:       136.67 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:       28.66, 40.91 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      238.68, 35.04 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Coordinates.  
COMMENTS:        This Notice was delayed by more than 60 sec past the end of the trigger integration interval;  
COMMENTS:        probably due to it occurring during a Malindi downlink session.  
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 = 11.24,3.22 [deg].

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 10 Jun 21 20:10:23 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     1054681,   Seg_Num: 0
GRB_RA:          243.939d {+16h 15m 45s} (J2000),
                 244.186d {+16h 16m 45s} (current),
                 243.363d {+16h 13m 27s} (1950)
GRB_DEC:         +14.391d {+14d 23' 29"} (J2000),
                 +14.339d {+14d 20' 21"} (current),
                 +14.515d {+14d 30' 54"} (1950)
GRB_DATE:        19375 TJD;   161 DOY;   21/06/10
GRB_TIME:        71487.51 SOD {19:51:27.51} UT
TRIGGER_INDEX:   155
GRB_PHI:          43.05 [deg]
GRB_THETA:        38.34 [deg]
DELTA_TIME:      52.00 [sec]
TRIGGER_DUR:     1.024 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     46.52 [sigma]
IMAGE_SIGNIF:    10.54 [sigma]
LC_URL:          sw01054681000msb.lc

GCN template for BAT paragraph

  • Click here! 
    At 19:51:27 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 210610 ***A*** (trigger=1054681).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 243.939, +14.391 which is 
   RA(J2000) = 16h 15m 45s
   Dec(J2000) = +14d 23' 29"
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 ~11361 counts/sec (15-350 keV), at ~8 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

    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: 71.168 s +/- 2.89772 s
  Estimated T50 duration: 34.304 s +/- 2.90196 s
  Estimated Peak Interval: MET   645047563.90399992 +/- 0.500000 s
  Estimated background rate 1:     4438.839 near MET 645047496.800000 s
  Estimated background rate 2:     4401.581 near MET 645047668.352000 s
  Estimated total duration: 133.184 s (for data selection)
       (from MET 645047502.400000 to MET 645047635.584000)
  Estimated total fluence: 259598.614738 count
  Created GTI with 34 entries
------------------------------------------

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

    bat_grb_pos_cat.sh 243.939 14.391 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 243.939 14.391
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 6 10 20 79.054906  50.504350
 Obj: 2021 6 10 20 237.767429  -14.216869
  • the object visibility at GSFC, Greenbelt, Maryland 
     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2021 6 10 20 44.084977  78.424731
 Obj: 2021 6 10 20 210.064505  -38.641273
  • the object visibility at MMT, Mt. Hopkins, Arizona 
     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2021 6 10 20 13.893319  79.442601
 Obj: 2021 6 10 20 202.584184  -39.386766
  • the object visibility at Hale Telescope, Palomar Mt., California 
     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2021 6 10 20 257.874831  56.529058
 Obj: 2021 6 10 20 147.573050  -50.216215
  • the object visibility at Mauna Kea, Hawaii 
     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2021 6 10 20 250.595845  -12.850167
 Obj: 2021 6 10 20 95.571514  -19.050953
  • the object visibility at Siding Spring Obs., Australia 
     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2021 6 10 20 241.077146  -0.744046
 Obj: 2021 6 10 20 100.380195  10.303340
  • the object visibility at Tokyo, Japan 
     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2021 6 10 20 115.704867  1.379528
 Obj: 2021 6 10 20 269.551656  30.134676
  • the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain 
     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2021 6 10 20 133.078227  19.042317
 Obj: 2021 6 10 20 270.186679  -29.712777
  • the object visibility at Gemini South, Cerro Pachon, Chile 
     
 
 
The data/results are in /local/data/bat1/prebascript/trigger1054681/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:
Thu Jun 10 16:11:25 EDT 2021