TDRSS lightcurve for Trigger=1093742

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 18 Jan 22 18:20:56 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     1093742,   Seg_Num: 0
GRB_RA:          192.274d {+12h 49m 06s} (J2000),
                 192.546d {+12h 50m 11s} (current),
                 191.658d {+12h 46m 38s} (1950)
GRB_DEC:         +22.909d {+22d 54' 33"} (J2000),
                 +22.789d {+22d 47' 22"} (current),
                 +23.182d {+23d 10' 54"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       2456 [cnts]    Image_Peak=98 [image_cnts]
TRIGGER_DUR:     1.024 [sec] 
TRIGGER_INDEX:   151     E_range: 25-100 keV
BKG_INTEN:       14413 [cnts]
BKG_TIME:        66019.53 SOD {18:20:19.53} UT
BKG_DUR:         8 [sec]
GRB_DATE:        19597 TJD;    18 DOY;   22/01/18
GRB_TIME:        66038.09 SOD {18:20:38.09} UT
GRB_PHI:          37.14 [deg]
GRB_THETA:        42.82 [deg]
SOLN_STATUS:     0x20000003
RATE_SIGNIF:     16.40 [sigma]
IMAGE_SIGNIF:    7.36 [sigma]
MERIT_PARAMS:     +1  +0  +0  +0  +2  -3  +0  +0 +41  +0 
SUN_POSTN:       300.76d {+20h 03m 03s}  -20.43d {-20d 25' 47"}
SUN_DIST:        113.91 [deg]   Sun_angle= 7.2 [hr] (West of Sun)
MOON_POSTN:      131.06d {+08h 44m 13s}  +22.92d {+22d 55' 13"}
MOON_DIST:        56.21 [deg]
MOON_ILLUM:      99 [%]
GAL_COORDS:      295.65, 85.75 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      181.58, 25.79 [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 = 216.47,-10.67 [deg].  
COMMENTS:           
COMMENTS:        NOTE: This BAT event is temporally(3.0<100sec) coincident with the FERMI_GBM event (trignum=664222840).

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 18 Jan 22 18:38:05 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     1093742,   Seg_Num: 0
GRB_RA:          192.274d {+12h 49m 06s} (J2000),
                 192.546d {+12h 50m 11s} (current),
                 191.658d {+12h 46m 38s} (1950)
GRB_DEC:         +22.909d {+22d 54' 33"} (J2000),
                 +22.789d {+22d 47' 22"} (current),
                 +23.182d {+23d 10' 54"} (1950)
GRB_DATE:        19597 TJD;    18 DOY;   22/01/18
GRB_TIME:        66038.09 SOD {18:20:38.09} UT
TRIGGER_INDEX:   151
GRB_PHI:          37.14 [deg]
GRB_THETA:        42.82 [deg]
DELTA_TIME:      64.00 [sec]
TRIGGER_DUR:     1.024 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     16.40 [sigma]
IMAGE_SIGNIF:    7.36 [sigma]
LC_URL:          sw01093742000msb.lc

GCN template for BAT paragraph

  • Click here! 
    At 18:20:38 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 220118 ***A*** (trigger=1093742).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 192.274, +22.909 which is 
   RA(J2000) = 12h 49m 06s
   Dec(J2000) = +22d 54' 33"
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 ~1379 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 T90 duration: 12.672 s +/- 0.768 s
  Estimated T50 duration: 4.864 s +/- 0.404771 s
  Estimated Peak Interval: MET   664222865.47199988 +/- 0.500000 s
  Estimated background rate 1:     3565.048 near MET 664222853.600000 s
  Estimated background rate 2:     3563.053 near MET 664222966.336000 s
  Estimated total duration: 15.552 s (for data selection)
       (from MET 664222864.000000 to MET 664222879.552000)
  Estimated total fluence: 7022.840229 count
  Created GTI with 4 entries
------------------------------------------

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

    bat_grb_pos_cat.sh 192.274 22.909 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 192.274 22.909
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 1 18 18 10.805040  29.792452
 Obj: 2022 1 18 18 125.298017  -5.477019
  • the object visibility at GSFC, Greenbelt, Maryland 
     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2022 1 18 18 332.958184  32.991357
 Obj: 2022 1 18 18 107.015372  16.385918
  • the object visibility at MMT, Mt. Hopkins, Arizona 
     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2022 1 18 18 327.597094  29.040963
 Obj: 2022 1 18 18 103.703141  21.692627
  • the object visibility at Hale Telescope, Palomar Mt., California 
     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2022 1 18 18 297.004725  11.693615
 Obj: 2022 1 18 18 101.852971  53.056545
  • the object visibility at Mauna Kea, Hawaii 
     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2022 1 18 18 306.331770  -15.524875
 Obj: 2022 1 18 18 197.642023  33.802908
  • the object visibility at Siding Spring Obs., Australia 
     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2022 1 18 18 258.447167  -52.710910
 Obj: 2022 1 18 18 283.621776  59.372074
  • the object visibility at Tokyo, Japan 
     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2022 1 18 18 61.866912  7.229746
 Obj: 2022 1 18 18 176.710058  -38.416252
  • the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain 
     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2022 1 18 18 120.928883  72.580919
 Obj: 2022 1 18 18 95.478948  -39.952280
  • the object visibility at Gemini South, Cerro Pachon, Chile 
     
 
 
The data/results are in /local/data/bat1/prebascript/trigger1093742/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:
Tue Jan 18 13:39:04 EST 2022