TDRSS lightcurve for Trigger=1191994

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 14 Sep 23 08:25:48 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     1191994,   Seg_Num: 0
GRB_RA:          263.418d {+17h 33m 40s} (J2000),
                 263.759d {+17h 35m 02s} (current),
                 262.701d {+17h 30m 48s} (1950)
GRB_DEC:         -15.632d {-15d 37' 55"} (J2000),
                 -15.647d {-15d 38' 48"} (current),
                 -15.599d {-15d 35' 54"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=187566 [image_cnts]
TRIGGER_DUR:     808.000 [sec]   (=13.5 [min])
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:        20201 TJD;   257 DOY;   23/09/14
GRB_TIME:        29519.99 SOD {08:11:59.99} UT
GRB_PHI:         -10.37 [deg]
GRB_THETA:        13.41 [deg]
SOLN_STATUS:     0x1D
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    25.55 [sigma]
MERIT_PARAMS:     +0  +0 +95  +4  +1  +9  +0  +1  +3  +0 
SUN_POSTN:       171.99d {+11h 27m 57s}   +3.46d {+03d 27' 25"}
SUN_DIST:         92.63 [deg]   Sun_angle= -6.1 [hr] (East of Sun)
MOON_POSTN:      166.19d {+11h 04m 47s}   +9.69d {+09d 41' 34"}
MOON_DIST:        99.81 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:        9.91,  9.35 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      263.61,  7.66 [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 matches a source in the on-board catalog: Num=10317=GX_9+9,   delta=1.410 [deg].  
COMMENTS:        This does not match any source in the ground catalog.  
COMMENTS:        This is not a GRB.  
COMMENTS:        This is an interesting source.  
COMMENTS:        This trigger occurred at longitude,latitude = 216.24,-6.03 [deg].

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 14 Sep 23 08:35:26 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     1191994,   Seg_Num: 0
GRB_RA:          263.418d {+17h 33m 40s} (J2000),
                 263.759d {+17h 35m 02s} (current),
                 262.701d {+17h 30m 48s} (1950)
GRB_DEC:         -15.632d {-15d 37' 55"} (J2000),
                 -15.647d {-15d 38' 48"} (current),
                 -15.599d {-15d 35' 54"} (1950)
GRB_DATE:        20201 TJD;   257 DOY;   23/09/14
GRB_TIME:        29519.99 SOD {08:11:59.99} UT
TRIGGER_INDEX:   20000
GRB_PHI:         -10.37 [deg]
GRB_THETA:        13.41 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     808.000 [sec]   (=13.5 [min])
SOLN_STATUS:     0x1D
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    25.55 [sigma]
LC_URL:          sw01191994000msb.lc

GCN template for BAT paragraph

  • Click here! 
    At 08:11:59 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 230914 ***A*** (trigger=1191994).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 263.418, -15.632 which is 
   RA(J2000) = 17h 33m 40s
   Dec(J2000) = -15d 37' 55"
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 ~0 counts/sec (15-350 keV), at ~ 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

    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)
------------------------------------------

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

    bat_grb_pos_cat.sh 263.418 -15.632 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 263.418 -15.632
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 14 8 233.987737  -31.556189
 Obj: 2023 9 14 8 105.239420  -42.062837
  • the object visibility at GSFC, Greenbelt, Maryland 
     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2023 9 14 8 196.473353  -53.683848
 Obj: 2023 9 14 8 80.483580  -14.775780
  • the object visibility at MMT, Mt. Hopkins, Arizona 
     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2023 9 14 8 186.159574  -53.039762
 Obj: 2023 9 14 8 77.834031  -10.134021
  • the object visibility at Hale Telescope, Palomar Mt., California 
     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2023 9 14 8 120.372034  -48.585302
 Obj: 2023 9 14 8 59.836614  26.677324
  • the object visibility at Mauna Kea, Hawaii 
     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2023 9 14 8 93.145983  -1.527512
 Obj: 2023 9 14 8 187.604779  74.229084
  • the object visibility at Siding Spring Obs., Australia 
     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2023 9 14 8 83.141307  15.901935
 Obj: 2023 9 14 8 337.231766  36.835615
  • the object visibility at Tokyo, Japan 
     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2023 9 14 8 273.088166  12.750178
 Obj: 2023 9 14 8 219.848744  -73.484510
  • the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain 
     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2023 9 14 8 289.870094  -36.113000
 Obj: 2023 9 14 8 47.473792  -28.688708
  • the object visibility at Gemini South, Cerro Pachon, Chile 
     
 
 
The data/results are in /local/data/bat1/prebascript/trigger1191994/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:
Thu Sep 14 04:37:03 EDT 2023