TDRSS lightcurve for Trigger=1144538

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 15 Dec 22 03:35:52 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     1144538,   Seg_Num: 0
GRB_RA:           54.789d {+03h 39m 09s} (J2000),
                  55.029d {+03h 40m 07s} (current),
                  54.267d {+03h 37m 04s} (1950)
GRB_DEC:         -27.433d {-27d 25' 57"} (J2000),
                 -27.359d {-27d 21' 33"} (current),
                 -27.594d {-27d 35' 39"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       2053 [cnts]    Image_Peak=113 [image_cnts]
TRIGGER_DUR:     1.024 [sec] 
TRIGGER_INDEX:   159     E_range: 50-350 keV
BKG_INTEN:       13566 [cnts]
BKG_TIME:        12905.60 SOD {03:35:05.60} UT
BKG_DUR:         8 [sec]
GRB_DATE:        19928 TJD;   349 DOY;   22/12/15
GRB_TIME:        12924.35 SOD {03:35:24.35} UT
GRB_PHI:         -147.84 [deg]
GRB_THETA:         9.26 [deg]
SOLN_STATUS:     0x83
RATE_SIGNIF:     6.78 [sigma]
IMAGE_SIGNIF:    6.55 [sigma]
MERIT_PARAMS:     +1  +0  +0  +0  +3  -4  +0  +0 +54  +0 
SUN_POSTN:       262.52d {+17h 30m 05s}  -23.26d {-23d 15' 26"}
SUN_DIST:        122.84 [deg]   Sun_angle= -10.2 [hr] (East of Sun)
MOON_POSTN:      162.77d {+10h 51m 04s}  +12.30d {+12d 18' 05"}
MOON_DIST:       111.24 [deg]
MOON_ILLUM:      62 [%]
GAL_COORDS:      223.34,-52.91 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       43.29,-45.33 [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:        Since the IMAGE_SIGNIF is less than 7 sigma, this is a questionable detection.  
COMMENTS:        This trigger occurred at longitude,latitude = 269.61,-19.82 [deg].

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 15 Dec 22 03:52:02 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     1144538,   Seg_Num: 0
GRB_RA:           54.789d {+03h 39m 09s} (J2000),
                  55.029d {+03h 40m 07s} (current),
                  54.267d {+03h 37m 04s} (1950)
GRB_DEC:         -27.433d {-27d 25' 57"} (J2000),
                 -27.359d {-27d 21' 33"} (current),
                 -27.594d {-27d 35' 39"} (1950)
GRB_DATE:        19928 TJD;   349 DOY;   22/12/15
GRB_TIME:        12924.35 SOD {03:35:24.35} UT
TRIGGER_INDEX:   159
GRB_PHI:         -147.84 [deg]
GRB_THETA:         9.26 [deg]
DELTA_TIME:      45.00 [sec]
TRIGGER_DUR:     1.024 [sec] 
SOLN_STATUS:     0x83
RATE_SIGNIF:     6.78 [sigma]
IMAGE_SIGNIF:    6.55 [sigma]
LC_URL:          sw01144538000msb.lc

GCN template for BAT paragraph

  • Click here! 
    At 03:35:24 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 221215 ***A*** (trigger=1144538).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 54.789, -27.433 which is 
   RA(J2000) = 03h 39m 09s
   Dec(J2000) = -27d 25' 57"
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 ~27401 counts/sec (15-350 keV), at ~167 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: 194.624 s +/- 13.365 s
  Estimated T50 duration: 194.624 s +/- 128.549 s
  Estimated Peak Interval: MET   692768322.68799996 +/- 0.500000 s
  Estimated background rate 1:     3262.232 near MET 692768136.800000 s
  Estimated background rate 2:    27309.571 near MET 692768339.072000 s
  Estimated total duration: 194.624 s (for data selection)
       (from MET 692768142.400000 to MET 692768337.024000)
  Estimated total fluence: -196834.839195 count
  Created GTI with 24 entries
------------------------------------------

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

    bat_grb_pos_cat.sh 54.789 -27.433 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 54.789 -27.433
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 15 3 111.609266  -59.314395
 Obj: 2022 12 15 3 356.466884  23.516327
  • the object visibility at GSFC, Greenbelt, Maryland 
     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2022 12 15 3 80.928497  -32.473185
 Obj: 2022 12 15 3 324.497538  20.881738
  • the object visibility at MMT, Mt. Hopkins, Arizona 
     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2022 12 15 3 79.166689  -27.792475
 Obj: 2022 12 15 3 320.268255  16.481581
  • the object visibility at Hale Telescope, Palomar Mt., California 
     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2022 12 15 3 61.141850  9.010515
 Obj: 2022 12 15 3 298.260836  -2.500811
  • the object visibility at Mauna Kea, Hawaii 
     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2022 12 15 3 117.721552  74.579816
 Obj: 2022 12 15 3 320.835597  -18.859760
  • the object visibility at Siding Spring Obs., Australia 
     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2022 12 15 3 358.064513  32.274792
 Obj: 2022 12 15 3 259.257337  -66.946088
  • the object visibility at Tokyo, Japan 
     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2022 12 15 3 264.114251  -64.423983
 Obj: 2022 12 15 3 48.527670  12.767334
  • the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain 
     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2022 12 15 3 27.224054  -31.218564
 Obj: 2022 12 15 3 145.906870  86.426537
  • the object visibility at Gemini South, Cerro Pachon, Chile 
     
 
 
The data/results are in /local/data/bat1/prebascript/trigger1144538/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:
Wed Dec 14 22:54:43 EST 2022