TDRSS lightcurve for Trigger=1070157

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 24 Aug 21 04:10:39 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     1070157,   Seg_Num: 0
GRB_RA:          232.132d {+15h 28m 32s} (J2000),
                 232.391d {+15h 29m 34s} (current),
                 231.535d {+15h 26m 08s} (1950)
GRB_DEC:         +11.135d {+11d 08' 07"} (J2000),
                 +11.061d {+11d 03' 41"} (current),
                 +11.307d {+11d 18' 26"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       11096 [cnts]    Image_Peak=447 [image_cnts]
TRIGGER_DUR:     4.096 [sec] 
TRIGGER_INDEX:   298     E_range: 25-100 keV
BKG_INTEN:       86828 [cnts]
BKG_TIME:        14948.39 SOD {04:09:08.39} UT
BKG_DUR:         40 [sec]
GRB_DATE:        19450 TJD;   236 DOY;   21/08/24
GRB_TIME:        15001.64 SOD {04:10:01.64} UT
GRB_PHI:          81.27 [deg]
GRB_THETA:        22.55 [deg]
SOLN_STATUS:     0x20000003
RATE_SIGNIF:     14.03 [sigma]
IMAGE_SIGNIF:    11.96 [sigma]
MERIT_PARAMS:     +1  +0  +0  +2  +2  +1  +0  +0 -22  +0 
SUN_POSTN:       153.27d {+10h 13m 04s}  +11.03d {+11d 02' 04"}
SUN_DIST:         77.38 [deg]   Sun_angle= -5.3 [hr] (East of Sun)
MOON_POSTN:      354.50d {+23h 37m 59s}   -7.60d {-07d 35' 52"}
MOON_DIST:       122.85 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:       17.24, 49.82 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      226.46, 29.03 [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 = 236.75,12.88 [deg].  
COMMENTS:           
COMMENTS:        NOTE: This BAT event is temporally(2.0<100sec) coincident with the FERMI_GBM event (trignum=651471008).

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 24 Aug 21 04:37:02 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     1070157,   Seg_Num: 0
GRB_RA:          232.132d {+15h 28m 32s} (J2000),
                 232.391d {+15h 29m 34s} (current),
                 231.535d {+15h 26m 08s} (1950)
GRB_DEC:         +11.135d {+11d 08' 07"} (J2000),
                 +11.061d {+11d 03' 41"} (current),
                 +11.307d {+11d 18' 26"} (1950)
GRB_DATE:        19450 TJD;   236 DOY;   21/08/24
GRB_TIME:        15001.64 SOD {04:10:01.64} UT
TRIGGER_INDEX:   298
GRB_PHI:          81.27 [deg]
GRB_THETA:        22.55 [deg]
DELTA_TIME:      -44.00 [sec]
TRIGGER_DUR:     4.096 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     14.03 [sigma]
IMAGE_SIGNIF:    11.96 [sigma]
LC_URL:          sw01070157000msb.lc

GCN template for BAT paragraph

  • Click here! 
    At 04:10:01 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 210824 ***A*** (trigger=1070157).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 232.132, +11.135 which is 
   RA(J2000) = 15h 28m 32s
   Dec(J2000) = +11d 08' 07"
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 ~1906 counts/sec (15-350 keV), at ~3 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: 27.584 s +/- 1.14576 s
  Estimated T50 duration: 9.856 s +/- 0.286217 s
  Estimated Peak Interval: MET   651471030.97600007 +/- 0.500000 s
  Estimated background rate 1:     4278.359 near MET 651471011.200000 s
  Estimated background rate 2:     4469.552 near MET 651471200.384000 s
  Estimated total duration: 168.448 s (for data selection)
       (from MET 651471017.600000 to MET 651471186.048000)
  Estimated total fluence: 13521.977989 count
  Created GTI with 8 entries
------------------------------------------

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

    bat_grb_pos_cat.sh 232.132 11.135 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 232.132 11.135
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 8 24 4 157.633413  -37.255602
 Obj: 2021 8 24 4 94.267696  12.386291
  • the object visibility at GSFC, Greenbelt, Maryland 
     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2021 8 24 4 121.855806  -24.478982
 Obj: 2021 8 24 4 76.636498  40.502306
  • the object visibility at MMT, Mt. Hopkins, Arizona 
     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2021 8 24 4 118.202272  -19.279173
 Obj: 2021 8 24 4 70.627536  44.877594
  • the object visibility at Hale Telescope, Palomar Mt., California 
     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2021 8 24 4 98.288137  9.782477
 Obj: 2021 8 24 4 25.941756  80.288212
  • the object visibility at Mauna Kea, Hawaii 
     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2021 8 24 4 143.132896  39.866095
 Obj: 2021 8 24 4 237.679485  25.205799
  • the object visibility at Siding Spring Obs., Australia 
     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2021 8 24 4 26.604024  64.427738
 Obj: 2021 8 24 4 273.241622  24.467467
  • the object visibility at Tokyo, Japan 
     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2021 8 24 4 230.868095  -33.887524
 Obj: 2021 8 24 4 131.702393  -35.813984
  • the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain 
     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2021 8 24 4 32.740839  -67.690331
 Obj: 2021 8 24 4 100.170792  -4.570874
  • the object visibility at Gemini South, Cerro Pachon, Chile 
     
 
 
The data/results are in /local/data/bat1/prebascript/trigger1070157/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:
Tue Aug 24 00:40:04 EDT 2021