TDRSS lightcurve for Trigger=1125350

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 26 Sep 22 08:11:48 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     1125350,   Seg_Num: 0
GRB_RA:          244.925d {+16h 19m 42s} (J2000),
                 245.249d {+16h 21m 00s} (current),
                 244.213d {+16h 16m 51s} (1950)
GRB_DEC:         -15.837d {-15d 50' 13"} (J2000),
                 -15.890d {-15d 53' 24"} (current),
                 -15.718d {-15d 43' 02"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=2601 [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:        19848 TJD;   269 DOY;   22/09/26
GRB_TIME:        29434.07 SOD {08:10:34.07} UT
GRB_PHI:         -55.51 [deg]
GRB_THETA:        23.71 [deg]
SOLN_STATUS:     0x513
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    13.83 [sigma]
MERIT_PARAMS:     +1  +0  +0  +6  +1  +3  +0  +0 -45  +0 
SUN_POSTN:       182.96d {+12h 11m 51s}   -1.28d {-01d 17' 02"}
SUN_DIST:         63.04 [deg]   Sun_angle= -4.2 [hr] (East of Sun)
MOON_POSTN:      188.98d {+12h 35m 56s}   -0.52d {-00d 31' 09"}
MOON_DIST:        57.55 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:      358.89, 23.70 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      245.82,  5.52 [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 matches a source in the ground catalog: Sco_X-1,   delta=0.204 [deg].  
COMMENTS:        This is not a GRB.  
COMMENTS:        This trigger occurred at longitude,latitude = 179.05,-5.44 [deg].  
COMMENTS:           
COMMENTS:        This trigger occured while the StarTracker had lost lock, so it is possibly bogus.

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 26 Sep 22 08:27:16 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     1125350,   Seg_Num: 0
GRB_RA:          244.925d {+16h 19m 42s} (J2000),
                 245.249d {+16h 21m 00s} (current),
                 244.213d {+16h 16m 51s} (1950)
GRB_DEC:         -15.837d {-15d 50' 13"} (J2000),
                 -15.890d {-15d 53' 24"} (current),
                 -15.718d {-15d 43' 02"} (1950)
GRB_DATE:        19848 TJD;   269 DOY;   22/09/26
GRB_TIME:        29434.07 SOD {08:10:34.07} UT
TRIGGER_INDEX:   20000
GRB_PHI:         -55.51 [deg]
GRB_THETA:        23.71 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     64.000 [sec] 
SOLN_STATUS:     0x2513
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    13.83 [sigma]
LC_URL:          sw01125350000msb.lc

GCN template for BAT paragraph

  • Click here! 
    At 08:10:34 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 220926 ***A*** (trigger=1125350).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 244.925, -15.837 which is 
   RA(J2000) = 16h 19m 42s
   Dec(J2000) = -15d 50' 13"
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 ~945 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 background rate 1:     3721.397 near MET 685872714.240000 s
  Estimated background rate 2:     3632.406 near MET 685872819.200000 s
  Estimated total fluence: 0.000000 count
  Created GTI with 2 entries
------------------------------------------

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

    bat_grb_pos_cat.sh 244.925 -15.837 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 244.925 -15.837
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 26 8 238.633519  -34.475478
 Obj: 2022 9 26 8 141.547835  -62.279263
  • the object visibility at GSFC, Greenbelt, Maryland 
     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2022 9 26 8 200.616586  -57.959641
 Obj: 2022 9 26 8 96.172293  -40.806822
  • the object visibility at MMT, Mt. Hopkins, Arizona 
     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2022 9 26 8 188.970308  -57.636987
 Obj: 2022 9 26 8 93.910058  -35.636933
  • the object visibility at Hale Telescope, Palomar Mt., California 
     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2022 9 26 8 115.117691  -52.115738
 Obj: 2022 9 26 8 73.009355  0.145946
  • the object visibility at Mauna Kea, Hawaii 
     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2022 9 26 8 88.526264  0.011046
 Obj: 2022 9 26 8 114.137060  59.857981
  • the object visibility at Siding Spring Obs., Australia 
     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2022 9 26 8 79.790977  12.274755
 Obj: 2022 9 26 8 14.572788  38.435895
  • the object visibility at Tokyo, Japan 
     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2022 9 26 8 277.866308  11.379342
 Obj: 2022 9 26 8 260.507080  -49.784582
  • the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain 
     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2022 9 26 8 293.690839  -32.408249
 Obj: 2022 9 26 8 15.209877  -42.466721
  • the object visibility at Gemini South, Cerro Pachon, Chile 
     
 
 
The data/results are in /local/data/bat1/prebascript/trigger1125350/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:
Mon Sep 26 04:29:22 EDT 2022