TDRSS lightcurve for Trigger=1126853

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 09 Oct 22 14:11:33 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     1126853,   Seg_Num: 0
GRB_RA:          288.263d {+19h 13m 03s} (J2000),
                 288.512d {+19h 14m 03s} (current),
                 287.718d {+19h 10m 52s} (1950)
GRB_DEC:         +19.803d {+19d 48' 09"} (J2000),
                 +19.843d {+19d 50' 33"} (current),
                 +19.717d {+19d 42' 60"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=903 [image_cnts]
TRIGGER_DUR:     64.000 [sec] 
TRIGGER_INDEX:   20000     E_range: 15-50 keV
BKG_INTEN:       0 [cnts]
BKG_TIME:        0.00 SOD {00:00:00.00} UT
BKG_DUR:         0 [sec]
GRB_DATE:        19861 TJD;   282 DOY;   22/10/09
GRB_TIME:        51017.99 SOD {14:10:17.99} UT
GRB_PHI:          44.81 [deg]
GRB_THETA:        44.40 [deg]
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    8.02 [sigma]
MERIT_PARAMS:     +1  +0  +0  +6  +1  -2  +0  +1  +9  +0 
SUN_POSTN:       194.99d {+12h 59m 58s}   -6.40d {-06d 23' 47"}
SUN_DIST:         95.46 [deg]   Sun_angle= -6.2 [hr] (East of Sun)
MOON_POSTN:       12.65d {+00h 50m 36s}   +2.60d {+02d 35' 55"}
MOON_DIST:        83.61 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:       52.99,  4.34 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      293.29, 41.78 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Coordinates.  
COMMENTS:        This is an image trigger.  (The RATE_SIGNIF & BKG_{INTEN, TIME, DUR} are undefined.)  
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 = 31.83,11.92 [deg].

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 09 Oct 22 14:14:47 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     1126853,   Seg_Num: 0
GRB_RA:          288.263d {+19h 13m 03s} (J2000),
                 288.512d {+19h 14m 03s} (current),
                 287.718d {+19h 10m 52s} (1950)
GRB_DEC:         +19.803d {+19d 48' 09"} (J2000),
                 +19.843d {+19d 50' 33"} (current),
                 +19.717d {+19d 42' 60"} (1950)
GRB_DATE:        19861 TJD;   282 DOY;   22/10/09
GRB_TIME:        51017.99 SOD {14:10:17.99} UT
TRIGGER_INDEX:   20000
GRB_PHI:          44.81 [deg]
GRB_THETA:        44.40 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     64.000 [sec] 
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    8.02 [sigma]
LC_URL:          sw01126853000msb.lc

GCN template for BAT paragraph

  • Click here! 
    At 14:10:17 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 221009 ***A*** (trigger=1126853).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 288.263, +19.803 which is 
   RA(J2000) = 19h 13m 03s
   Dec(J2000) = +19d 48' 09"
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 ~890 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

    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: 8.192 s +/- 110.54 s
  Estimated Peak Interval: MET   687017537.66399992 +/- 0.500000 s
  Estimated background rate 1:     4952.254 near MET 687017444.096000 s
  Estimated background rate 2:     4781.588 near MET 687017607.296000 s
  Estimated total duration: 116.48 s (for data selection)
       (from MET 687017464.192000 to MET 687017580.672000)
  Estimated total fluence: 262.791598 count
  Created GTI with 3 entries
------------------------------------------

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

    bat_grb_pos_cat.sh 288.263 19.803 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 288.263 19.803
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: 2022 10 9 14 307.684786  28.889159
 Obj: 2022 10 9 14 222.044798  -19.130478
  • the object visibility at GSFC, Greenbelt, Maryland 
     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2022 10 9 14 281.713273  6.540928
 Obj: 2022 10 9 14 189.884393  -37.890878
  • the object visibility at MMT, Mt. Hopkins, Arizona 
     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2022 10 9 14 278.546157  1.281668
 Obj: 2022 10 9 14 182.701297  -36.787857
  • the object visibility at Hale Telescope, Palomar Mt., California 
     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2022 10 9 14 264.687778  -32.975933
 Obj: 2022 10 9 14 135.994856  -36.750801
  • the object visibility at Mauna Kea, Hawaii 
     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2022 10 9 14 357.139552  -52.299576
 Obj: 2022 10 9 14 107.980940  -8.750232
  • the object visibility at Siding Spring Obs., Australia 
     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2022 10 9 14 150.522937  -58.834434
 Obj: 2022 10 9 14 97.181013  25.850573
  • the object visibility at Tokyo, Japan 
     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2022 10 9 14 24.405823  52.040229
 Obj: 2022 10 9 14 257.230626  18.909454
  • the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain 
     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2022 10 9 14 244.193070  46.818772
 Obj: 2022 10 9 14 271.943886  -45.482783
  • the object visibility at Gemini South, Cerro Pachon, Chile 
     
 
 
The data/results are in /local/data/bat1/prebascript/trigger1126853/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:
Sun Oct  9 10:17:22 EDT 2022