TDRSS lightcurve for Trigger=1044032

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 19 Apr 21 06:54:56 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     1044032,   Seg_Num: 0
GRB_RA:           86.862d {+05h 47m 27s} (J2000),
                  86.875d {+05h 47m 30s} (current),
                  86.833d {+05h 47m 20s} (1950)
GRB_DEC:         -65.539d {-65d 32' 20"} (J2000),
                 -65.533d {-65d 31' 56"} (current),
                 -65.554d {-65d 33' 15"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=1227 [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:        19323 TJD;   109 DOY;   21/04/19
GRB_TIME:        24821.12 SOD {06:53:41.12} UT
GRB_PHI:          98.71 [deg]
GRB_THETA:        21.15 [deg]
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    8.15 [sigma]
MERIT_PARAMS:     +1  +0  +0  +6  +1  -2  +0  +0  -2  +0 
SUN_POSTN:        27.38d {+01h 49m 32s}  +11.28d {+11d 16' 34"}
SUN_DIST:         88.38 [deg]   Sun_angle= -4.0 [hr] (East of Sun)
MOON_POSTN:      109.71d {+07h 18m 50s}  +25.39d {+25d 23' 10"}
MOON_DIST:        92.60 [deg]
MOON_ILLUM:      40 [%]
GAL_COORDS:      275.23,-31.11 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       37.29,-88.37 [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 = 88.56,-1.32 [deg].

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 19 Apr 21 07:11:17 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     1044032,   Seg_Num: 0
GRB_RA:           86.862d {+05h 47m 27s} (J2000),
                  86.875d {+05h 47m 30s} (current),
                  86.833d {+05h 47m 20s} (1950)
GRB_DEC:         -65.539d {-65d 32' 20"} (J2000),
                 -65.533d {-65d 31' 56"} (current),
                 -65.554d {-65d 33' 15"} (1950)
GRB_DATE:        19323 TJD;   109 DOY;   21/04/19
GRB_TIME:        24821.12 SOD {06:53:41.12} UT
TRIGGER_INDEX:   20000
GRB_PHI:          98.71 [deg]
GRB_THETA:        21.15 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     64.000 [sec] 
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    8.15 [sigma]
LC_URL:          sw01044032000msb.lc

GCN template for BAT paragraph

  • Click here! 
    At 06:53:41 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 210419 ***A*** (trigger=1044032).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 86.862, -65.539 which is 
   RA(J2000) = 05h 47m 27s
   Dec(J2000) = -65d 32' 20"
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 ~890 counts/sec (15-350 keV), at ~0 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: 68.608 s +/- 4.57947 s
  Estimated T50 duration: 40.96 s +/- 4.096 s
  Estimated Peak Interval: MET   640508092.60799992 +/- 0.500000 s
  Estimated background rate 1:     4263.189 near MET 640508046.784000 s
  Estimated background rate 2:     4230.054 near MET 640508192.960000 s
  Estimated total duration: 82.432 s (for data selection)
       (from MET 640508069.568000 to MET 640508152.000000)
  Estimated total fluence: 7735.259079 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 86.862 -65.539 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 86.862 -65.539
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: 2021 4 19 7 213.274377  -33.448011
 Obj: 2021 4 19 7 24.116216  -57.890151
  • the object visibility at GSFC, Greenbelt, Maryland 
     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2021 4 19 7 171.183188  -46.650487
 Obj: 2021 4 19 7 28.854259  -38.596238
  • the object visibility at MMT, Mt. Hopkins, Arizona 
     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2021 4 19 7 163.364720  -43.912654
 Obj: 2021 4 19 7 29.721650  -37.579579
  • the object visibility at Hale Telescope, Palomar Mt., California 
     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2021 4 19 7 117.460047  -31.183959
 Obj: 2021 4 19 7 23.244810  -10.064388
  • the object visibility at Mauna Kea, Hawaii 
     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2021 4 19 7 108.189290  7.569809
 Obj: 2021 4 19 7 10.188401  54.630780
  • the object visibility at Siding Spring Obs., Australia 
     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2021 4 19 7 80.429935  33.282707
 Obj: 2021 4 19 7 359.028109  -9.987787
  • the object visibility at Tokyo, Japan 
     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2021 4 19 7 258.592244  2.640533
 Obj: 2021 4 19 7 342.962011  -49.517863
  • the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain 
     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2021 4 19 7 294.044505  -53.408568
 Obj: 2021 4 19 7 10.465084  7.880565
  • the object visibility at Gemini South, Cerro Pachon, Chile 
     
 
 
The data/results are in /local/data/bat1/prebascript/trigger1044032/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 Apr 19 03:12:04 EDT 2021