TDRSS lightcurve for Trigger=1125809

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 30 Sep 22 11:12:16 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     1125809,   Seg_Num: 0
GRB_RA:           64.737d {+04h 18m 57s} (J2000),
                  65.056d {+04h 20m 13s} (current),
                  64.037d {+04h 16m 09s} (1950)
GRB_DEC:         +13.352d {+13d 21' 06"} (J2000),
                 +13.405d {+13d 24' 20"} (current),
                 +13.231d {+13d 13' 53"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       3062 [cnts]    Image_Peak=101 [image_cnts]
TRIGGER_DUR:     1.024 [sec] 
TRIGGER_INDEX:   155     E_range: 50-350 keV
BKG_INTEN:       11016 [cnts]
BKG_TIME:        40298.04 SOD {11:11:38.04} UT
BKG_DUR:         8 [sec]
GRB_DATE:        19852 TJD;   273 DOY;   22/09/30
GRB_TIME:        40312.12 SOD {11:11:52.12} UT
GRB_PHI:          15.89 [deg]
GRB_THETA:        50.57 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     41.20 [sigma]
IMAGE_SIGNIF:    7.33 [sigma]
MERIT_PARAMS:     +1  +0  +0  +0  +3  -3  +0  +0 +52  +0 
SUN_POSTN:       186.69d {+12h 26m 44s}   -2.89d {-02d 53' 17"}
SUN_DIST:        121.41 [deg]   Sun_angle= 8.1 [hr] (West of Sun)
MOON_POSTN:      241.84d {+16h 07m 22s}  -22.73d {-22d 43' 30"}
MOON_DIST:       170.19 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      180.87,-25.42 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       65.21, -7.94 [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 = 212.84,20.28 [deg].

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 30 Sep 22 11:31:06 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     1125809,   Seg_Num: 0
GRB_RA:           64.737d {+04h 18m 57s} (J2000),
                  65.056d {+04h 20m 13s} (current),
                  64.037d {+04h 16m 09s} (1950)
GRB_DEC:         +13.352d {+13d 21' 06"} (J2000),
                 +13.405d {+13d 24' 20"} (current),
                 +13.231d {+13d 13' 53"} (1950)
GRB_DATE:        19852 TJD;   273 DOY;   22/09/30
GRB_TIME:        40312.12 SOD {11:11:52.12} UT
TRIGGER_INDEX:   155
GRB_PHI:          15.89 [deg]
GRB_THETA:        50.57 [deg]
DELTA_TIME:      32.00 [sec]
TRIGGER_DUR:     1.024 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     41.20 [sigma]
IMAGE_SIGNIF:    7.33 [sigma]
LC_URL:          sw01125809000msb.lc

GCN template for BAT paragraph

  • Click here! 
    At 11:11:52 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 220930 ***A*** (trigger=1125809).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 64.737, +13.352 which is 
   RA(J2000) = 04h 18m 57s
   Dec(J2000) = +13d 21' 06"
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 ~2960 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

    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: 34.24 s +/- 29.1541 s
  Estimated T50 duration: 3.84 s +/- 0.128 s
  Estimated Peak Interval: MET   686229215.67999995 +/- 0.500000 s
  Estimated background rate 1:     3224.463 near MET 686229128.640000 s
  Estimated background rate 2:     3555.804 near MET 686229313.984000 s
  Estimated total duration: 160.768 s (for data selection)
       (from MET 686229138.880000 to MET 686229299.648000)
  Estimated total fluence: 11195.074553 count
  Created GTI with 17 entries
------------------------------------------

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

    bat_grb_pos_cat.sh 64.737 13.352 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 64.737 13.352
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 30 11 272.321942  -1.760001
 Obj: 2022 9 30 11 56.368342  52.047089
  • the object visibility at GSFC, Greenbelt, Maryland 
     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2022 9 30 11 253.250286  -30.045732
 Obj: 2022 9 30 11 353.036171  71.591196
  • the object visibility at MMT, Mt. Hopkins, Arizona 
     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2022 9 30 11 247.992927  -34.252591
 Obj: 2022 9 30 11 337.448758  68.675904
  • the object visibility at Hale Telescope, Palomar Mt., California 
     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2022 9 30 11 215.062119  -69.663830
 Obj: 2022 9 30 11 270.621971  44.772733
  • the object visibility at Mauna Kea, Hawaii 
     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2022 9 30 11 58.982868  -36.081458
 Obj: 2022 9 30 11 264.561905  -17.345637
  • the object visibility at Siding Spring Obs., Australia 
     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2022 9 30 11 105.176875  -25.734290
 Obj: 2022 9 30 11 241.771152  -14.936083
  • the object visibility at Tokyo, Japan 
     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2022 9 30 11 311.689119  46.630048
 Obj: 2022 9 30 11 102.146505  5.727448
  • the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain 
     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2022 9 30 11 269.456882  6.617802
 Obj: 2022 9 30 11 134.757374  33.176621
  • the object visibility at Gemini South, Cerro Pachon, Chile 
     
 
 
The data/results are in /local/data/bat1/prebascript/trigger1125809/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:
Fri Sep 30 07:31:42 EDT 2022