TDRSS lightcurve for Trigger=982707

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 16 Jul 20 22:58:02 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     982707,   Seg_Num: 0
GRB_RA:          196.013d {+13h 04m 03s} (J2000),
                 196.258d {+13h 05m 02s} (current),
                 195.416d {+13h 01m 40s} (1950)
GRB_DEC:         +29.630d {+29d 37' 47"} (J2000),
                 +29.520d {+29d 31' 12"} (current),
                 +29.898d {+29d 53' 52"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       4472 [cnts]    Image_Peak=555 [image_cnts]
TRIGGER_DUR:     0.256 [sec] 
TRIGGER_INDEX:   126     E_range: 50-350 keV
BKG_INTEN:       15100 [cnts]
BKG_TIME:        82646.70 SOD {22:57:26.70} UT
BKG_DUR:         8 [sec]
GRB_DATE:        19046 TJD;   198 DOY;   20/07/16
GRB_TIME:        82661.42 SOD {22:57:41.42} UT
GRB_PHI:         161.36 [deg]
GRB_THETA:        33.90 [deg]
SOLN_STATUS:     0x20000003
RATE_SIGNIF:     178.56 [sigma]
IMAGE_SIGNIF:    18.06 [sigma]
MERIT_PARAMS:     +1  +0  +0  -2  +3  +5  +0  +0 -33  +0 
SUN_POSTN:       116.78d {+07h 47m 07s}  +21.16d {+21d 09' 21"}
SUN_DIST:         70.97 [deg]   Sun_angle= -5.3 [hr] (East of Sun)
MOON_POSTN:       67.64d {+04h 30m 34s}  +19.98d {+19d 58' 51"}
MOON_DIST:       110.00 [deg]
MOON_ILLUM:      15 [%]
GAL_COORDS:       75.71, 86.26 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      181.60, 33.30 [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 = 300.96,14.29 [deg].  
COMMENTS:           
COMMENTS:        NOTE: This BAT event is temporally(0.0<100sec) coincident with the FERMI_GBM event (trignum=616633066).

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 16 Jul 20 23:16:39 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     982707,   Seg_Num: 0
GRB_RA:          196.013d {+13h 04m 03s} (J2000),
                 196.258d {+13h 05m 02s} (current),
                 195.416d {+13h 01m 40s} (1950)
GRB_DEC:         +29.630d {+29d 37' 47"} (J2000),
                 +29.520d {+29d 31' 12"} (current),
                 +29.898d {+29d 53' 52"} (1950)
GRB_DATE:        19046 TJD;   198 DOY;   20/07/16
GRB_TIME:        82661.42 SOD {22:57:41.42} UT
TRIGGER_INDEX:   126
GRB_PHI:         161.36 [deg]
GRB_THETA:        33.90 [deg]
DELTA_TIME:      -31.00 [sec]
TRIGGER_DUR:     0.256 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     178.56 [sigma]
IMAGE_SIGNIF:    18.06 [sigma]
LC_URL:          sw00982707000msb.lc

GCN template for BAT paragraph

  • Click here! 
    At 22:57:41 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 200716 ***A*** (trigger=982707).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 196.013, +29.630 which is 
   RA(J2000) = 13h 04m 03s
   Dec(J2000) = +29d 37' 47"
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 ~30929 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: 70.912 s +/- 2.89772 s
  Estimated T50 duration: 23.424 s +/- 0.729712 s
  Estimated Peak Interval: MET   616633087.03999996 +/- 0.500000 s
  Estimated background rate 1:     4119.330 near MET 616633074.304000 s
  Estimated background rate 2:     4088.186 near MET 616633223.168000 s
  Estimated total duration: 87.808 s (for data selection)
       (from MET 616633086.208000 to MET 616633174.016000)
  Estimated total fluence: 36765.545835 count
  Created GTI with 26 entries
------------------------------------------

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

    bat_grb_pos_cat.sh 196.013 29.630 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 196.013 29.630
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 7 16 23 104.484743  16.037655
 Obj: 2020 7 16 23 31.846041  79.059246
  • the object visibility at GSFC, Greenbelt, Maryland 
     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2020 7 16 23 90.475992  42.614185
 Obj: 2020 7 16 23 268.074114  66.367970
  • the object visibility at MMT, Mt. Hopkins, Arizona 
     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2020 7 16 23 85.401614  47.599127
 Obj: 2020 7 16 23 268.555862  61.368478
  • the object visibility at Hale Telescope, Palomar Mt., California 
     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2020 7 16 23 102.013255  82.857443
 Obj: 2020 7 16 23 245.785028  24.828167
  • the object visibility at Mauna Kea, Hawaii 
     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2020 7 16 23 227.594989  20.209034
 Obj: 2020 7 16 23 258.041906  -45.100184
  • the object visibility at Siding Spring Obs., Australia 
     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2020 7 16 23 265.126953  32.250845
 Obj: 2020 7 16 23 212.404257  -17.667463
  • the object visibility at Tokyo, Japan 
     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2020 7 16 23 142.036125  -29.810052
 Obj: 2020 7 16 23 108.103994  33.482224
  • the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain 
     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2020 7 16 23 107.584902  -12.160176
 Obj: 2020 7 16 23 167.563908  28.938258
  • the object visibility at Gemini South, Cerro Pachon, Chile 
     
 
 
The data/results are in /local/data/bat1/prebascript/trigger982707/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 Jul 16 19:17:23 EDT 2020