TDRSS lightcurve for Trigger=1148770

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 13 Jan 23 00:28:43 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     1148770,   Seg_Num: 0
GRB_RA:          299.512d {+19h 58m 03s} (J2000),
                 299.728d {+19h 58m 55s} (current),
                 299.041d {+19h 56m 10s} (1950)
GRB_DEC:         +35.075d {+35d 04' 28"} (J2000),
                 +35.138d {+35d 08' 16"} (current),
                 +34.938d {+34d 56' 18"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       14412 [cnts]    Image_Peak=401 [image_cnts]
TRIGGER_DUR:     8.192 [sec] 
TRIGGER_INDEX:   453     E_range: 15-50 keV
BKG_INTEN:       100097 [cnts]
BKG_TIME:        1577.43 SOD {00:26:17.43} UT
BKG_DUR:         64 [sec]
GRB_DATE:        19957 TJD;    13 DOY;   23/01/13
GRB_TIME:        1669.53 SOD {00:27:49.53} UT
GRB_PHI:         -15.09 [deg]
GRB_THETA:        31.83 [deg]
SOLN_STATUS:     0x50D
RATE_SIGNIF:     11.44 [sigma]
IMAGE_SIGNIF:    8.78 [sigma]
MERIT_PARAMS:     +0  +0 +100  +3  +1  -1  +0  +1 -54  +0 
SUN_POSTN:       294.34d {+19h 37m 22s}  -21.55d {-21d 33' 04"}
SUN_DIST:         56.92 [deg]   Sun_angle= -0.4 [hr] (East of Sun)
MOON_POSTN:      180.13d {+12h 00m 32s}   +3.57d {+03d 33' 57"}
MOON_DIST:       111.55 [deg]
MOON_ILLUM:      70 [%]
GAL_COORDS:       71.19,  3.06 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      313.50, 54.15 [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 matches a source in the on-board catalog: Num=23281=(null) (probably an AT_Slot).  
COMMENTS:        This matches a source in the ground catalog: Cyg X-1,   delta=0.143 [deg].  
COMMENTS:        This is not a GRB.  
COMMENTS:        This is an interesting source.  
COMMENTS:        This trigger occurred at longitude,latitude = 209.48,16.22 [deg].  
COMMENTS:

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 13 Jan 23 00:50:51 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     1148770,   Seg_Num: 0
GRB_RA:          299.512d {+19h 58m 03s} (J2000),
                 299.728d {+19h 58m 55s} (current),
                 299.041d {+19h 56m 10s} (1950)
GRB_DEC:         +35.075d {+35d 04' 28"} (J2000),
                 +35.138d {+35d 08' 16"} (current),
                 +34.938d {+34d 56' 18"} (1950)
GRB_DATE:        19957 TJD;    13 DOY;   23/01/13
GRB_TIME:        1669.53 SOD {00:27:49.53} UT
TRIGGER_INDEX:   453
GRB_PHI:         -15.09 [deg]
GRB_THETA:        31.83 [deg]
DELTA_TIME:      70.00 [sec]
TRIGGER_DUR:     8.192 [sec] 
SOLN_STATUS:     0x50D
RATE_SIGNIF:     11.44 [sigma]
IMAGE_SIGNIF:    8.78 [sigma]
LC_URL:          sw01148770000msb.lc

GCN template for BAT paragraph

  • Click here! 
    At 00:27:49 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 230113 ***A*** (trigger=1148770).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 299.512, +35.075 which is 
   RA(J2000) = 19h 58m 03s
   Dec(J2000) = +35d 04' 28"
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 ~929 counts/sec (15-350 keV), at ~3 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: 72.576 s +/- 8.193 s
  Estimated T50 duration: 49.28 s +/- 10.2688 s
  Estimated Peak Interval: MET   695262503.48799992 +/- 0.500000 s
  Estimated background rate 1:     2750.625 near MET 695262484.000000 s
  Estimated background rate 2:     2490.800 near MET 695262641.664000 s
  Estimated total duration: 105.408 s (for data selection)
       (from MET 695262491.200000 to MET 695262596.608000)
  Estimated total fluence: 2145.336820 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 299.512 35.075 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 299.512 35.075
Cyg X-1 10002 299.591 35.202 0.14246524751058948

    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 1 13 0 78.937626  -21.331399
 Obj: 2023 1 13 0 121.192714  17.758840
  • the object visibility at GSFC, Greenbelt, Maryland 
     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2023 1 13 0 59.253587  6.989435
 Obj: 2023 1 13 0 111.514565  39.649931
  • the object visibility at MMT, Mt. Hopkins, Arizona 
     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2023 1 13 0 55.402883  10.338997
 Obj: 2023 1 13 0 108.440215  44.962272
  • the object visibility at Hale Telescope, Palomar Mt., California 
     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2023 1 13 0 28.550533  43.351965
 Obj: 2023 1 13 0 139.806061  68.854472
  • the object visibility at Mauna Kea, Hawaii 
     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2023 1 13 0 260.225223  58.558955
 Obj: 2023 1 13 0 212.008306  14.128870
  • the object visibility at Siding Spring Obs., Australia 
     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2023 1 13 0 311.868940  16.466363
 Obj: 2023 1 13 0 252.430719  44.953224
  • the object visibility at Tokyo, Japan 
     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2023 1 13 0 106.576584  -70.161950
 Obj: 2023 1 13 0 157.418844  -21.634991
  • the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain 
     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2023 1 13 0 63.235228  -2.398949
 Obj: 2023 1 13 0 117.498789  -25.217548
  • the object visibility at Gemini South, Cerro Pachon, Chile 
     
 
 
The data/results are in /local/data/bat1/prebascript/trigger1148770/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 Jan 12 19:51:42 EST 2023