TDRSS lightcurve for Trigger=1142847

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 01 Dec 22 12:26:22 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     1142847,   Seg_Num: 0
GRB_RA:          266.933d {+17h 47m 44s} (J2000),
                 267.547d {+17h 50m 11s} (current),
                 265.597d {+17h 42m 23s} (1950)
GRB_DEC:         -68.260d {-68d 15' 33"} (J2000),
                 -68.266d {-68d 15' 55"} (current),
                 -68.241d {-68d 14' 28"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=3009 [image_cnts]
TRIGGER_DUR:     64.000 [sec] 
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:        19914 TJD;   335 DOY;   22/12/01
GRB_TIME:        44705.68 SOD {12:25:05.68} UT
GRB_PHI:         -38.57 [deg]
GRB_THETA:        34.21 [deg]
SOLN_STATUS:     0x20000013
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    15.65 [sigma]
MERIT_PARAMS:     +1  +0  +0  +6  +1  +4  +0  +0 -66  +0 
SUN_POSTN:       247.60d {+16h 30m 25s}  -21.84d {-21d 50' 22"}
SUN_DIST:         48.03 [deg]   Sun_angle= -1.3 [hr] (East of Sun)
MOON_POSTN:      353.29d {+23h 33m 09s}   -7.49d {-07d 29' 25"}
MOON_DIST:        81.47 [deg]
MOON_ILLUM:      60 [%]
GAL_COORDS:      325.13,-19.46 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      268.40,-44.84 [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 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 = 245.41,-19.71 [deg].  
COMMENTS:           
COMMENTS:        NOTE: This BAT event is temporally(20.0<100sec) coincident with the FERMI_GBM event (trignum=691590290).

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 01 Dec 22 12:45:27 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     1142847,   Seg_Num: 0
GRB_RA:          266.933d {+17h 47m 44s} (J2000),
                 267.547d {+17h 50m 11s} (current),
                 265.597d {+17h 42m 23s} (1950)
GRB_DEC:         -68.260d {-68d 15' 33"} (J2000),
                 -68.266d {-68d 15' 55"} (current),
                 -68.241d {-68d 14' 28"} (1950)
GRB_DATE:        19914 TJD;   335 DOY;   22/12/01
GRB_TIME:        44705.68 SOD {12:25:05.68} UT
TRIGGER_INDEX:   20000
GRB_PHI:         -38.57 [deg]
GRB_THETA:        34.21 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     64.000 [sec] 
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    15.65 [sigma]
LC_URL:          sw01142847000msb.lc

GCN template for BAT paragraph

  • Click here! 
    At 12:25:05 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 221201 ***A*** (trigger=1142847).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 266.933, -68.260 which is 
   RA(J2000) = 17h 47m 44s
   Dec(J2000) = -68d 15' 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 ~4849 counts/sec (15-350 keV), at ~-13 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: 86.336 s +/- 45.888 s
  Estimated T50 duration: 11.84 s +/- 1.15378 s
  Estimated Peak Interval: MET   691590322.39999998 +/- 0.500000 s
  Estimated background rate 1:     3534.063 near MET 691590313.600000 s
  Estimated background rate 2:     3428.198 near MET 691590501.440000 s
  Estimated total duration: 165.76 s (for data selection)
       (from MET 691590315.200000 to MET 691590480.960000)
  Estimated total fluence: 51083.486138 count
  Created GTI with 15 entries
------------------------------------------

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

    bat_grb_pos_cat.sh 266.933 -68.260 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 266.933 -68.260
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 12 1 12 296.385294  -2.504280
 Obj: 2022 12 1 12 332.305347  -37.450373
  • the object visibility at GSFC, Greenbelt, Maryland 
     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2022 12 1 12 280.366271  -26.636376
 Obj: 2022 12 1 12 336.609609  -43.221780
  • the object visibility at MMT, Mt. Hopkins, Arizona 
     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2022 12 1 12 276.643078  -31.870425
 Obj: 2022 12 1 12 337.379970  -46.727906
  • the object visibility at Hale Telescope, Palomar Mt., California 
     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2022 12 1 12 279.353296  -64.934537
 Obj: 2022 12 1 12 356.638877  -41.408064
  • the object visibility at Mauna Kea, Hawaii 
     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2022 12 1 12 31.018131  -30.205079
 Obj: 2022 12 1 12 16.795168  15.826113
  • the object visibility at Siding Spring Obs., Australia 
     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2022 12 1 12 95.355621  -48.522936
 Obj: 2022 12 1 12 26.353560  -40.773736
  • the object visibility at Tokyo, Japan 
     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2022 12 1 12 341.698500  37.173151
 Obj: 2022 12 1 12 347.336742  -10.571836
  • the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain 
     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2022 12 1 12 279.911167  28.556956
 Obj: 2022 12 1 12 335.098178  28.422043
  • the object visibility at Gemini South, Cerro Pachon, Chile 
     
 
 
The data/results are in /local/data/bat1/prebascript/trigger1142847/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  1 07:45:43 EST 2022