TDRSS lightcurve for Trigger=980210

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 30 Jun 20 01:59:01 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     980210,   Seg_Num: 0
GRB_RA:           91.380d {+06h 05m 31s} (J2000),
                  91.438d {+06h 05m 45s} (current),
                  91.237d {+06h 04m 57s} (1950)
GRB_DEC:         -60.789d {-60d 47' 20"} (J2000),
                 -60.792d {-60d 47' 30"} (current),
                 -60.783d {-60d 46' 57"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       3312 [cnts]    Image_Peak=179 [image_cnts]
TRIGGER_DUR:     1.024 [sec] 
TRIGGER_INDEX:   146     E_range: 25-100 keV
BKG_INTEN:       19561 [cnts]
BKG_TIME:        6558.79 SOD {01:49:18.79} UT
BKG_DUR:         8 [sec]
GRB_DATE:        19030 TJD;   182 DOY;   20/06/30
GRB_TIME:        6574.47 SOD {01:49:34.47} UT
GRB_PHI:          72.44 [deg]
GRB_THETA:        21.68 [deg]
SOLN_STATUS:     0x20000003
RATE_SIGNIF:     15.26 [sigma]
IMAGE_SIGNIF:    9.07 [sigma]
MERIT_PARAMS:     +1  +0  +0  +0  +2  +0  +0  +0 -10  +0 
SUN_POSTN:        99.53d {+06h 38m 07s}  +23.15d {+23d 08' 48"}
SUN_DIST:         84.20 [deg]   Sun_angle= 0.5 [hr] (West of Sun)
MOON_POSTN:      211.26d {+14h 05m 03s}   -7.99d {-07d 59' 27"}
MOON_DIST:        96.83 [deg]
MOON_ILLUM:      70 [%]
GAL_COORDS:      269.79,-28.98 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       96.67,-84.20 [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 = 183.70,-4.90 [deg].

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 30 Jun 20 02:09:20 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     980210,   Seg_Num: 0
GRB_RA:           91.380d {+06h 05m 31s} (J2000),
                  91.438d {+06h 05m 45s} (current),
                  91.237d {+06h 04m 57s} (1950)
GRB_DEC:         -60.789d {-60d 47' 20"} (J2000),
                 -60.792d {-60d 47' 30"} (current),
                 -60.783d {-60d 46' 57"} (1950)
GRB_DATE:        19030 TJD;   182 DOY;   20/06/30
GRB_TIME:        6574.47 SOD {01:49:34.47} UT
TRIGGER_INDEX:   146
GRB_PHI:          72.44 [deg]
GRB_THETA:        21.68 [deg]
DELTA_TIME:      32.00 [sec]
TRIGGER_DUR:     1.024 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     15.26 [sigma]
IMAGE_SIGNIF:    9.07 [sigma]
LC_URL:          sw00980210000msb.lc

GCN template for BAT paragraph

  • Click here! 
    At 01:49:34 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 200630 ***A*** (trigger=980210).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 91.380, -60.789 which is 
   RA(J2000) = 06h 05m 31s
   Dec(J2000) = -60d 47' 20"
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 ~1921 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

    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: 6.912 s +/- 1.152 s
  Estimated T50 duration: 2.432 s +/- 0.256 s
  Estimated Peak Interval: MET   615174600.00000000 +/- 0.500000 s
  Estimated background rate 1:     4913.286 near MET 615174587.584000 s
  Estimated background rate 2:     4949.309 near MET 615174696.832000 s
  Estimated total duration: 8.576 s (for data selection)
       (from MET 615174599.168000 to MET 615174607.744000)
  Estimated total fluence: 4821.025751 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 91.380 -60.789 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 91.380 -60.789
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: 2020 6 30 2 135.160904  -13.199371
 Obj: 2020 6 30 2 35.371763  -57.049161
  • the object visibility at GSFC, Greenbelt, Maryland 
     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2020 6 30 2 113.661476  5.809486
 Obj: 2020 6 30 2 34.904857  -34.883580
  • the object visibility at MMT, Mt. Hopkins, Arizona 
     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2020 6 30 2 110.495252  11.110669
 Obj: 2020 6 30 2 35.131274  -33.351171
  • the object visibility at Hale Telescope, Palomar Mt., California 
     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2020 6 30 2 103.946620  40.713462
 Obj: 2020 6 30 2 25.395615  -4.342749
  • the object visibility at Mauna Kea, Hawaii 
     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2020 6 30 2 182.665298  35.481358
 Obj: 2020 6 30 2 5.645799  60.233921
  • the object visibility at Siding Spring Obs., Australia 
     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2020 6 30 2 299.159086  69.966362
 Obj: 2020 6 30 2 354.691648  -5.647463
  • the object visibility at Tokyo, Japan 
     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2020 6 30 2 192.344481  -37.108981
 Obj: 2020 6 30 2 343.855493  -55.597443
  • the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain 
     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2020 6 30 2 89.677854  -51.699001
 Obj: 2020 6 30 2 16.036632  5.297902
  • the object visibility at Gemini South, Cerro Pachon, Chile 
     
 
 
The data/results are in /local/data/bat1/prebascript/trigger980210/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 Jun 29 22:09:46 EDT 2020