TDRSS lightcurve for Trigger=1123129

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 07 Sep 22 14:05:40 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     1123129,   Seg_Num: 0
GRB_RA:          268.870d {+17h 55m 29s} (J2000),
                 269.207d {+17h 56m 50s} (current),
                 268.126d {+17h 52m 30s} (1950)
GRB_DEC:         -20.315d {-20d 18' 54"} (J2000),
                 -20.317d {-20d 19' 02"} (current),
                 -20.308d {-20d 18' 28"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       2822 [cnts]    Image_Peak=170 [image_cnts]
TRIGGER_DUR:     1.024 [sec] 
TRIGGER_INDEX:   146     E_range: 25-100 keV
BKG_INTEN:       16678 [cnts]
BKG_TIME:        50714.18 SOD {14:05:14.18} UT
BKG_DUR:         8 [sec]
GRB_DATE:        19829 TJD;   250 DOY;   22/09/07
GRB_TIME:        50725.76 SOD {14:05:25.76} UT
GRB_PHI:         174.47 [deg]
GRB_THETA:        25.03 [deg]
SOLN_STATUS:     0x20000003
RATE_SIGNIF:     13.96 [sigma]
IMAGE_SIGNIF:    8.52 [sigma]
MERIT_PARAMS:     +1  +0  +0  +0  +2  -1  +0  +1 +23  +0 
SUN_POSTN:       166.13d {+11h 04m 31s}   +5.93d {+05d 55' 54"}
SUN_DIST:        104.30 [deg]   Sun_angle= -6.9 [hr] (East of Sun)
MOON_POSTN:      310.13d {+20h 40m 30s}  -23.54d {-23d 32' 27"}
MOON_DIST:        37.97 [deg]
MOON_ILLUM:      89 [%]
GAL_COORDS:        8.55,  2.49 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      268.94,  3.12 [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 = 142.69,-19.19 [deg].  
COMMENTS:           
COMMENTS:        NOTE: This BAT event is temporally(1.0<100sec) coincident with the FERMI_GBM event (trignum=684252331).

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 07 Sep 22 14:22:28 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     1123129,   Seg_Num: 0
GRB_RA:          268.870d {+17h 55m 29s} (J2000),
                 269.207d {+17h 56m 50s} (current),
                 268.126d {+17h 52m 30s} (1950)
GRB_DEC:         -20.315d {-20d 18' 54"} (J2000),
                 -20.317d {-20d 19' 02"} (current),
                 -20.308d {-20d 18' 28"} (1950)
GRB_DATE:        19829 TJD;   250 DOY;   22/09/07
GRB_TIME:        50725.76 SOD {14:05:25.76} UT
TRIGGER_INDEX:   146
GRB_PHI:         174.47 [deg]
GRB_THETA:        25.03 [deg]
DELTA_TIME:      -37.00 [sec]
TRIGGER_DUR:     1.024 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     13.96 [sigma]
IMAGE_SIGNIF:    8.52 [sigma]
LC_URL:          sw01123129000msb.lc

GCN template for BAT paragraph

  • Click here! 
    At 14:05:25 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 220907 ***A*** (trigger=1123129).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 268.870, -20.315 which is 
   RA(J2000) = 17h 55m 29s
   Dec(J2000) = -20d 18' 54"
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 ~2070 counts/sec (15-350 keV), at ~1 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: 31.808 s +/- 20.6499 s
  Estimated T50 duration: 4.096 s +/- 0.778594 s
  Estimated Peak Interval: MET   684252356.60800004 +/- 0.500000 s
  Estimated background rate 1:     4321.686 near MET 684252341.760000 s
  Estimated background rate 2:     4551.240 near MET 684252473.536000 s
  Estimated total duration: 53.632 s (for data selection)
       (from MET 684252352.320000 to MET 684252405.952000)
  Estimated total fluence: 3995.159751 count
  Created GTI with 7 entries
------------------------------------------

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

    bat_grb_pos_cat.sh 268.870 -20.315 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 268.870 -20.315
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 9 7 14 295.582141  36.368591
 Obj: 2022 9 7 14 242.824560  -58.160440
  • the object visibility at GSFC, Greenbelt, Maryland 
     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2022 9 7 14 269.700212  10.826798
 Obj: 2022 9 7 14 161.742732  -78.099193
  • the object visibility at MMT, Mt. Hopkins, Arizona 
     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2022 9 7 14 266.749130  5.835154
 Obj: 2022 9 7 14 143.393015  -74.264958
  • the object visibility at Hale Telescope, Palomar Mt., California 
     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2022 9 7 14 250.113942  -30.545980
 Obj: 2022 9 7 14 80.633755  -44.607966
  • the object visibility at Mauna Kea, Hawaii 
     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2022 9 7 14 2.158014  -64.647206
 Obj: 2022 9 7 14 78.877808  21.942960
  • the object visibility at Siding Spring Obs., Australia 
     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2022 9 7 14 154.230225  -46.417603
 Obj: 2022 9 7 14 55.418033  11.379323
  • the object visibility at Tokyo, Japan 
     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2022 9 7 14 28.973984  64.444800
 Obj: 2022 9 7 14 287.570144  -10.446025
  • the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain 
     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2022 9 7 14 234.313742  36.546055
 Obj: 2022 9 7 14 321.135186  -28.708989
  • the object visibility at Gemini South, Cerro Pachon, Chile 
     
 
 
The data/results are in /local/data/bat1/prebascript/trigger1123129/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:
Wed Sep  7 10:23:02 EDT 2022