TDRSS lightcurve for Trigger=1189514

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 03 Sep 23 17:23:27 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     1189514,   Seg_Num: 0
GRB_RA:            9.926d {+00h 39m 42s} (J2000),
                  10.209d {+00h 40m 50s} (current),
                   9.326d {+00h 37m 18s} (1950)
GRB_DEC:         -40.924d {-40d 55' 25"} (J2000),
                 -40.794d {-40d 47' 38"} (current),
                 -41.198d {-41d 11' 53"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       4940 [cnts]    Image_Peak=172 [image_cnts]
TRIGGER_DUR:     2.048 [sec] 
TRIGGER_INDEX:   444     E_range: 15-50 keV
BKG_INTEN:       51703 [cnts]
BKG_TIME:        62544.05 SOD {17:22:24.05} UT
BKG_DUR:         24 [sec]
GRB_DATE:        20190 TJD;   246 DOY;   23/09/03
GRB_TIME:        62576.24 SOD {17:22:56.24} UT
GRB_PHI:          93.76 [deg]
GRB_THETA:        28.63 [deg]
SOLN_STATUS:     0x20000003
RATE_SIGNIF:     11.66 [sigma]
IMAGE_SIGNIF:    7.63 [sigma]
MERIT_PARAMS:     +1  +0  +0  +1  +1  -2  +0  +0 +75  +0 
SUN_POSTN:       162.43d {+10h 49m 43s}   +7.45d {+07d 27' 17"}
SUN_DIST:        138.50 [deg]   Sun_angle= 10.1 [hr] (West of Sun)
MOON_POSTN:       29.01d {+01h 56m 03s}  +12.30d {+12d 17' 49"}
MOON_DIST:        55.87 [deg]
MOON_ILLUM:      82 [%]
GAL_COORDS:      312.12,-75.99 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      349.27,-40.75 [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 = 145.87,-13.02 [deg].  
COMMENTS:           
COMMENTS:        NOTE: This BAT event is temporally(2.0<100sec) coincident with the FERMI_GBM event (trignum=715454583).

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 03 Sep 23 17:45:01 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     15619001,   Seg_Num: 193
GRB_RA:            9.926d {+00h 39m 42s} (J2000),
                  10.209d {+00h 40m 50s} (current),
                   9.326d {+00h 37m 18s} (1950)
GRB_DEC:         -40.924d {-40d 55' 25"} (J2000),
                 -40.794d {-40d 47' 38"} (current),
                 -41.198d {-41d 11' 53"} (1950)
GRB_DATE:        20190 TJD;   246 DOY;   23/09/03
GRB_TIME:        62576.24 SOD {17:22:56.24} UT
TRIGGER_INDEX:   444
GRB_PHI:          93.76 [deg]
GRB_THETA:        28.63 [deg]
DELTA_TIME:      28802.00 [sec]
TRIGGER_DUR:     2.048 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    0.00 [sigma]
LC_URL:          sw01189514000msb.lc

GCN template for BAT paragraph

  • Click here! 
    At 17:22:56 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 230903 ***A*** (trigger=1189514).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 9.926, -40.924 which is 
   RA(J2000) = 00h 39m 42s
   Dec(J2000) = -40d 55' 25"
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 ~1578 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: 50.048 s +/- 45.056 s
  Estimated T50 duration: 17.28 s +/- 9.02763 s
  Estimated Peak Interval: MET   715454609.15199995 +/- 0.500000 s
  Estimated background rate 1:     3781.128 near MET 715454596.288000 s
  Estimated background rate 2:     3650.784 near MET 715454757.056000 s
  Estimated total duration: 111.616 s (for data selection)
       (from MET 715454608.576000 to MET 715454720.192000)
  Estimated total fluence: 2695.645472 count
  Created GTI with 6 entries
------------------------------------------

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

    bat_grb_pos_cat.sh 9.926 -40.924 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 9.926 -40.924
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: 2023 9 3 17 355.787335  58.375135
 Obj: 2023 9 3 17 75.896625  -67.031969
  • the object visibility at GSFC, Greenbelt, Maryland 
     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2023 9 3 17 297.854322  48.466417
 Obj: 2023 9 3 17 60.711263  -38.744063
  • the object visibility at MMT, Mt. Hopkins, Arizona 
     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2023 9 3 17 293.909253  43.198284
 Obj: 2023 9 3 17 60.446990  -35.166574
  • the object visibility at Hale Telescope, Palomar Mt., California 
     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2023 9 3 17 266.002154  11.094804
 Obj: 2023 9 3 17 45.852126  0.273340
  • the object visibility at Mauna Kea, Hawaii 
     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2023 9 3 17 290.858847  -42.853631
 Obj: 2023 9 3 17 49.064070  74.017747
  • the object visibility at Siding Spring Obs., Australia 
     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2023 9 3 17 216.714878  -40.936480
 Obj: 2023 9 3 17 359.467894  14.764722
  • the object visibility at Tokyo, Japan 
     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2023 9 3 17 79.916643  32.569084
 Obj: 2023 9 3 17 304.720857  -63.505736
  • the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain 
     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2023 9 3 17 174.070018  52.015970
 Obj: 2023 9 3 17 18.716278  -15.485342
  • the object visibility at Gemini South, Cerro Pachon, Chile 
     
 
 
The data/results are in /local/data/bat1/prebascript/trigger1189514/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 Sep  3 13:45:43 EDT 2023