TDRSS lightcurve for Trigger=1010946

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 03 Dec 20 06:53:30 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     1010946,   Seg_Num: 0
GRB_RA:           38.080d {+02h 32m 19s} (J2000),
                  38.312d {+02h 33m 15s} (current),
                  37.525d {+02h 30m 06s} (1950)
GRB_DEC:         -26.538d {-26d 32' 14"} (J2000),
                 -26.446d {-26d 26' 44"} (current),
                 -26.757d {-26d 45' 26"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       29887 [cnts]    Image_Peak=570 [image_cnts]
TRIGGER_DUR:     12.160 [sec] 
TRIGGER_INDEX:   478     E_range: 25-100 keV
BKG_INTEN:       143800 [cnts]
BKG_TIME:        24653.91 SOD {06:50:53.91} UT
BKG_DUR:         64 [sec]
GRB_DATE:        19186 TJD;   338 DOY;   20/12/03
GRB_TIME:        24747.16 SOD {06:52:27.16} UT
GRB_PHI:         -129.60 [deg]
GRB_THETA:        16.76 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     14.00 [sigma]
IMAGE_SIGNIF:    8.40 [sigma]
MERIT_PARAMS:     +1  +0  +0  +4  +2  -1  +0  +0 +53  +0 
SUN_POSTN:       250.04d {+16h 40m 10s}  -22.17d {-22d 10' 05"}
SUN_DIST:        122.49 [deg]   Sun_angle= -9.9 [hr] (East of Sun)
MOON_POSTN:      105.70d {+07h 02m 49s}  +24.82d {+24d 49' 01"}
MOON_DIST:        82.79 [deg]
MOON_ILLUM:      92 [%]
GAL_COORDS:      217.22,-67.53 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       25.01,-39.01 [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 = 288.17,-0.52 [deg].

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 03 Dec 20 07:09:31 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     1010946,   Seg_Num: 0
GRB_RA:           38.080d {+02h 32m 19s} (J2000),
                  38.312d {+02h 33m 15s} (current),
                  37.525d {+02h 30m 06s} (1950)
GRB_DEC:         -26.538d {-26d 32' 14"} (J2000),
                 -26.446d {-26d 26' 44"} (current),
                 -26.757d {-26d 45' 26"} (1950)
GRB_DATE:        19186 TJD;   338 DOY;   20/12/03
GRB_TIME:        24747.16 SOD {06:52:27.16} UT
TRIGGER_INDEX:   478
GRB_PHI:         -129.60 [deg]
GRB_THETA:        16.76 [deg]
DELTA_TIME:      -44.00 [sec]
TRIGGER_DUR:     12.160 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     14.00 [sigma]
IMAGE_SIGNIF:    8.40 [sigma]
LC_URL:          sw01010946000msb.lc

GCN template for BAT paragraph

  • Click here! 
    At 06:52:27 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 201203 ***A*** (trigger=1010946).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 38.080, -26.538 which is 
   RA(J2000) = 02h 32m 19s
   Dec(J2000) = -26d 32' 14"
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 ~27971 counts/sec (15-350 keV), at ~183 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: 184.704 s +/- 38.5712 s
  Estimated T50 duration: 184.704 s +/- 93.0596 s
  Estimated Peak Interval: MET   628671356.67199993 +/- 0.500000 s
  Estimated background rate 1:     4377.604 near MET 628671159.360000 s
  Estimated background rate 2:    32193.116 near MET 628671356.672000 s
  Estimated total duration: 184.704 s (for data selection)
       (from MET 628671169.920000 to MET 628671354.624000)
  Estimated total fluence: -1967746.408948 count
  Created GTI with 25 entries
------------------------------------------

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

    bat_grb_pos_cat.sh 38.080 -26.538 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 38.080 -26.538
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: 2020 12 3 7 245.635031  -59.320292
 Obj: 2020 12 3 7 52.240646  2.692022
  • the object visibility at GSFC, Greenbelt, Maryland 
     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2020 12 3 7 159.226841  -79.899676
 Obj: 2020 12 3 7 27.786119  26.038930
  • the object visibility at MMT, Mt. Hopkins, Arizona 
     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2020 12 3 7 139.662537  -75.861532
 Obj: 2020 12 3 7 21.947948  26.650440
  • the object visibility at Hale Telescope, Palomar Mt., California 
     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2020 12 3 7 78.049943  -44.935970
 Obj: 2020 12 3 7 340.079275  40.936722
  • the object visibility at Mauna Kea, Hawaii 
     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2020 12 3 7 77.028485  22.684439
 Obj: 2020 12 3 7 285.614000  27.717697
  • the object visibility at Siding Spring Obs., Australia 
     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2020 12 3 7 54.112548  10.026401
 Obj: 2020 12 3 7 292.904286  -13.682746
  • the object visibility at Tokyo, Japan 
     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2020 12 3 7 289.303895  -11.203887
 Obj: 2020 12 3 7 77.569246  -38.136999
  • the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain 
     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2020 12 3 7 322.258858  -27.131889
 Obj: 2020 12 3 7 75.562756  31.108171
  • the object visibility at Gemini South, Cerro Pachon, Chile 
     
 
 
The data/results are in /local/data/bat1/prebascript/trigger1010946/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 Dec  3 02:10:22 EST 2020