TDRSS lightcurve for Trigger=1102329

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 12 Apr 22 17:07:01 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     1102329,   Seg_Num: 0
GRB_RA:          320.794d {+21h 23m 11s} (J2000),
                 321.080d {+21h 24m 19s} (current),
                 320.153d {+21h 20m 37s} (1950)
GRB_DEC:          -0.223d {-00d 13' 23"} (J2000),
                  -0.127d {-00d 07' 36"} (current),
                  -0.438d {-00d 26' 16"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       515 [cnts]    Image_Peak=72 [image_cnts]
TRIGGER_DUR:     0.032 [sec] 
TRIGGER_INDEX:   10318     E_range: 25-100 keV
BKG_INTEN:       20833 [cnts]
BKG_TIME:        61595.04 SOD {17:06:35.04} UT
BKG_DUR:         8 [sec]
GRB_DATE:        19681 TJD;   102 DOY;   22/04/12
GRB_TIME:        61608.80 SOD {17:06:48.80} UT
GRB_PHI:          36.78 [deg]
GRB_THETA:        23.06 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     46.56 [sigma]
IMAGE_SIGNIF:    8.88 [sigma]
MERIT_PARAMS:     +1  +0  +0  -5  +2  -1  +0  +0 -49  +0 
SUN_POSTN:        21.07d {+01h 24m 17s}   +8.86d {+08d 51' 25"}
SUN_DIST:         60.41 [deg]   Sun_angle= 4.0 [hr] (West of Sun)
MOON_POSTN:      155.47d {+10h 21m 53s}  +15.72d {+15d 43' 10"}
MOON_DIST:       158.91 [deg]
MOON_ILLUM:      81 [%]
GAL_COORDS:       52.27,-33.29 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      323.11, 14.35 [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 = 262.42,-16.46 [deg].

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 12 Apr 22 17:23:52 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     1102329,   Seg_Num: 0
GRB_RA:          320.794d {+21h 23m 11s} (J2000),
                 321.080d {+21h 24m 19s} (current),
                 320.153d {+21h 20m 37s} (1950)
GRB_DEC:          -0.223d {-00d 13' 23"} (J2000),
                  -0.127d {-00d 07' 36"} (current),
                  -0.438d {-00d 26' 16"} (1950)
GRB_DATE:        19681 TJD;   102 DOY;   22/04/12
GRB_TIME:        61609.03 SOD {17:06:49.03} UT
TRIGGER_INDEX:   10318
GRB_PHI:          36.78 [deg]
GRB_THETA:        23.06 [deg]
DELTA_TIME:      42.00 [sec]
TRIGGER_DUR:     0.032 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     46.56 [sigma]
IMAGE_SIGNIF:    8.88 [sigma]
LC_URL:          sw01102329000msb.lc

GCN template for BAT paragraph

  • Click here! 
    At 17:06:49 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 220412 ***A*** (trigger=1102329).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 320.794, -0.223 which is 
   RA(J2000) = 21h 23m 11s
   Dec(J2000) = -00d 13' 23"
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 ~18389 counts/sec (15-350 keV), at ~184 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: 182.272 s +/- 35.9555 s
  Estimated T50 duration: 182.272 s +/- 86.9345 s
  Estimated Peak Interval: MET   671476038.14400005 +/- 0.500000 s
  Estimated background rate 1:     5194.293 near MET 671476026.176000 s
  Estimated background rate 2:    22795.655 near MET 671476222.272000 s
  Estimated total duration: 182.272 s (for data selection)
       (from MET 671476037.952000 to MET 671476220.224000)
  Estimated total fluence: -758609.539998 count
  Created GTI with 34 entries
------------------------------------------

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

    bat_grb_pos_cat.sh 320.794 -0.223 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 320.794 -0.223
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 4 12 17 354.959690  59.752369
 Obj: 2022 4 12 17 67.991971  24.614425
  • the object visibility at GSFC, Greenbelt, Maryland 
     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2022 4 12 17 295.894704  49.107224
 Obj: 2022 4 12 17 39.403676  51.206177
  • the object visibility at MMT, Mt. Hopkins, Arizona 
     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2022 4 12 17 292.115630  43.818893
 Obj: 2022 4 12 17 29.654892  52.698134
  • the object visibility at Hale Telescope, Palomar Mt., California 
     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2022 4 12 17 264.539583  11.225150
 Obj: 2022 4 12 17 311.423499  61.204035
  • the object visibility at Mauna Kea, Hawaii 
     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2022 4 12 17 289.569639  -43.947408
 Obj: 2022 4 12 17 263.071905  11.430679
  • the object visibility at Siding Spring Obs., Australia 
     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2022 4 12 17 215.426788  -39.882021
 Obj: 2022 4 12 17 268.270162  -2.784529
  • the object visibility at Tokyo, Japan 
     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2022 4 12 17 81.181383  33.545479
 Obj: 2022 4 12 17 103.325260  -23.061655
  • the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain 
     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2022 4 12 17 174.797725  50.648180
 Obj: 2022 4 12 17 104.124821  22.834525
  • the object visibility at Gemini South, Cerro Pachon, Chile 
     
 
 
The data/results are in /local/data/bat1/prebascript/trigger1102329/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 Apr 12 13:24:49 EDT 2022