TDRSS lightcurve for Trigger=1056757

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 19 Jun 21 23:59:38 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     1056757,   Seg_Num: 0
GRB_RA:          319.713d {+21h 18m 51s} (J2000),
                 319.936d {+21h 19m 45s} (current),
                 319.193d {+21h 16m 46s} (1950)
GRB_DEC:         +33.860d {+33d 51' 35"} (J2000),
                 +33.951d {+33d 57' 04"} (current),
                 +33.648d {+33d 38' 54"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       1120 [cnts]    Image_Peak=81 [image_cnts]
TRIGGER_DUR:     0.064 [sec] 
TRIGGER_INDEX:   10427     E_range: 50-350 keV
BKG_INTEN:       23513 [cnts]
BKG_TIME:        86348.77 SOD {23:59:08.77} UT
BKG_DUR:         8 [sec]
GRB_DATE:        19384 TJD;   170 DOY;   21/06/19
GRB_TIME:        86365.41 SOD {23:59:25.41} UT
GRB_PHI:         -58.55 [deg]
GRB_THETA:        35.87 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     67.02 [sigma]
IMAGE_SIGNIF:    8.13 [sigma]
MERIT_PARAMS:     +1  +0  +0  -4  +3  -2  +0  +0 +25  +0 
SUN_POSTN:        88.81d {+05h 55m 15s}  +23.43d {+23d 25' 53"}
SUN_DIST:        104.81 [deg]   Sun_angle= 8.6 [hr] (West of Sun)
MOON_POSTN:      202.55d {+13h 30m 13s}   -5.36d {-05d 21' 18"}
MOON_DIST:       115.59 [deg]
MOON_ILLUM:      70 [%]
GAL_COORDS:       80.35,-10.91 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      336.84, 46.45 [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 = 31.38,-11.06 [deg].

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 20 Jun 21 00:18:28 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     1056757,   Seg_Num: 0
GRB_RA:          319.713d {+21h 18m 51s} (J2000),
                 319.936d {+21h 19m 45s} (current),
                 319.193d {+21h 16m 46s} (1950)
GRB_DEC:         +33.860d {+33d 51' 35"} (J2000),
                 +33.951d {+33d 57' 04"} (current),
                 +33.648d {+33d 38' 54"} (1950)
GRB_DATE:        19384 TJD;   170 DOY;   21/06/19
GRB_TIME:        86365.66 SOD {23:59:25.66} UT
TRIGGER_INDEX:   10427
GRB_PHI:         -58.55 [deg]
GRB_THETA:        35.87 [deg]
DELTA_TIME:      71.00 [sec]
TRIGGER_DUR:     0.064 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     67.02 [sigma]
IMAGE_SIGNIF:    8.13 [sigma]
LC_URL:          sw01056757000msb.lc

GCN template for BAT paragraph

  • Click here! 
    At 23:59:25 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 210619 ***A*** (trigger=1056757).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 319.713, +33.860 which is 
   RA(J2000) = 21h 18m 51s
   Dec(J2000) = +33d 51' 35"
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 ~94431 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: 59.008 s +/- 2.89772 s
  Estimated T50 duration: 44.928 s +/- 2.89772 s
  Estimated Peak Interval: MET   645839993.85599995 +/- 0.500000 s
  Estimated background rate 1:     5886.285 near MET 645839981.120000 s
  Estimated background rate 2:     5637.863 near MET 645840146.752000 s
  Estimated total duration: 121.344 s (for data selection)
       (from MET 645839992.640000 to MET 645840113.984000)
  Estimated total fluence: 727037.955809 count
  Created GTI with 78 entries
------------------------------------------

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

    bat_grb_pos_cat.sh 319.713 33.860 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 319.713 33.860
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 20 0 115.698991  5.661520
 Obj: 2021 6 20 0 220.287440  -3.084050
  • the object visibility at GSFC, Greenbelt, Maryland 
     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2021 6 20 0 100.622665  29.866094
 Obj: 2021 6 20 0 195.312078  -22.444492
  • the object visibility at MMT, Mt. Hopkins, Arizona 
     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2021 6 20 0 96.842348  35.107119
 Obj: 2021 6 20 0 189.939343  -21.922084
  • the object visibility at Hale Telescope, Palomar Mt., California 
     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2021 6 20 0 103.599720  67.734883
 Obj: 2021 6 20 0 153.727842  -30.219101
  • the object visibility at Mauna Kea, Hawaii 
     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2021 6 20 0 212.999211  27.332684
 Obj: 2021 6 20 0 117.266559  -22.196229
  • the object visibility at Siding Spring Obs., Australia 
     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2021 6 20 0 271.312057  46.612782
 Obj: 2021 6 20 0 115.091313  25.378163
  • the object visibility at Tokyo, Japan 
     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2021 6 20 0 158.943417  -34.796300
 Obj: 2021 6 20 0 245.656998  31.218121
  • the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain 
     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2021 6 20 0 102.863847  -26.608242
 Obj: 2021 6 20 0 249.950864  -42.235864
  • the object visibility at Gemini South, Cerro Pachon, Chile 
     
 
 
The data/results are in /local/data/bat1/prebascript/trigger1056757/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:
Sat Jun 19 20:19:04 EDT 2021