TDRSS lightcurve for Trigger=888648

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 11 Feb 19 16:55:20 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     888648,   Seg_Num: 0
GRB_RA:          196.675d {+13h 06m 42s} (J2000),
                 196.893d {+13h 07m 34s} (current),
                 196.106d {+13h 04m 25s} (1950)
GRB_DEC:         +41.966d {+41d 57' 58"} (J2000),
                 +41.864d {+41d 51' 51"} (current),
                 +42.233d {+42d 13' 59"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       4526 [cnts]    Image_Peak=132 [image_cnts]
TRIGGER_DUR:     2.048 [sec] 
TRIGGER_INDEX:   473     E_range: 25-100 keV
BKG_INTEN:       45997 [cnts]
BKG_TIME:        60849.59 SOD {16:54:09.59} UT
BKG_DUR:         24 [sec]
GRB_DATE:        18525 TJD;    42 DOY;   19/02/11
GRB_TIME:        60884.73 SOD {16:54:44.73} UT
GRB_PHI:         -132.25 [deg]
GRB_THETA:        42.07 [deg]
SOLN_STATUS:     0x83
RATE_SIGNIF:     9.16 [sigma]
IMAGE_SIGNIF:    6.93 [sigma]
MERIT_PARAMS:     +1  +0  +0  +1  +2  -3  +0  +0 +61  +0 
SUN_POSTN:       325.02d {+21h 40m 05s}  -13.96d {-13d 57' 21"}
SUN_DIST:        127.39 [deg]   Sun_angle= 8.5 [hr] (West of Sun)
MOON_POSTN:       37.38d {+02h 29m 30s}   +9.31d {+09d 18' 50"}
MOON_DIST:       125.48 [deg]
MOON_ILLUM:      37 [%]
GAL_COORDS:      112.03, 74.84 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      174.37, 44.30 [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 = 92.91,-20.27 [deg].

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 11 Feb 19 17:13:32 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     888648,   Seg_Num: 0
GRB_RA:          196.675d {+13h 06m 42s} (J2000),
                 196.893d {+13h 07m 34s} (current),
                 196.106d {+13h 04m 25s} (1950)
GRB_DEC:         +41.966d {+41d 57' 58"} (J2000),
                 +41.864d {+41d 51' 51"} (current),
                 +42.233d {+42d 13' 59"} (1950)
GRB_DATE:        18525 TJD;    42 DOY;   19/02/11
GRB_TIME:        60884.73 SOD {16:54:44.73} UT
TRIGGER_INDEX:   473
GRB_PHI:         -132.25 [deg]
GRB_THETA:        42.07 [deg]
DELTA_TIME:      6.00 [sec]
TRIGGER_DUR:     2.048 [sec] 
SOLN_STATUS:     0x83
RATE_SIGNIF:     9.16 [sigma]
IMAGE_SIGNIF:    6.93 [sigma]
LC_URL:          sw00888648000msb.lc

GCN template for BAT paragraph

  • Click here! 
    At 16:54:44 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 190211 ***A*** (trigger=888648).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 196.675, +41.966 which is 
   RA(J2000) = 13h 06m 42s
   Dec(J2000) = +41d 57' 58"
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 ~1593 counts/sec (15-350 keV), at ~1 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: 1.536 s +/- 0.256 s
  Estimated T50 duration: 0.64 s +/- 0.128 s
  Estimated Peak Interval: MET   571596908.22399998 +/- 0.500000 s
  Estimated background rate 1:     3901.357 near MET 571596895.360000 s
  Estimated background rate 2:     3820.247 near MET 571597001.216000 s
  Estimated total duration: 1.792 s (for data selection)
       (from MET 571596907.520000 to MET 571596909.312000)
  Estimated total fluence: 709.696276 count
  Created GTI with 3 entries
------------------------------------------

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

    bat_grb_pos_cat.sh 196.675 41.966 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 196.675 41.966
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: 2019 2 11 17 352.803860  36.719533
 Obj: 2019 2 11 17 140.643946  6.371877
  • the object visibility at GSFC, Greenbelt, Maryland 
     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2019 2 11 17 313.737613  30.399048
 Obj: 2019 2 11 17 126.738453  21.708655
  • the object visibility at MMT, Mt. Hopkins, Arizona 
     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2019 2 11 17 309.400747  25.517774
 Obj: 2019 2 11 17 124.229308  26.784739
  • the object visibility at Hale Telescope, Palomar Mt., California 
     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2019 2 11 17 284.972453  0.269050
 Obj: 2019 2 11 17 130.887506  47.165440
  • the object visibility at Mauna Kea, Hawaii 
     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2019 2 11 17 313.499719  -30.690342
 Obj: 2019 2 11 17 189.155053  16.004412
  • the object visibility at Siding Spring Obs., Australia 
     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2019 2 11 17 231.711552  -60.612835
 Obj: 2019 2 11 17 243.017818  66.512521
  • the object visibility at Tokyo, Japan 
     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2019 2 11 17 57.614283  23.247922
 Obj: 2019 2 11 17 180.948376  -19.408763
  • the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain 
     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2019 2 11 17 180.125632  73.611609
 Obj: 2019 2 11 17 120.404210  -47.221094
  • the object visibility at Gemini South, Cerro Pachon, Chile 
     
 
 
The data/results are in /local/data/bat1/prebascript/trigger888648/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:
Mon Feb 11 12:14:02 EST 2019