TDRSS lightcurve for Trigger=1042031

Notes:

GCN BAT Position Notice



GCN BAT Lightcurve Notice


TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 09 Apr 21 13:55:06 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     1042031,   Seg_Num: 0
GRB_RA:            0.000d {+00h 00m 00s} (J2000),
                   0.273d {+00h 01m 05s} (current),
                 359.359d {+23h 57m 26s} (1950)
GRB_DEC:          +0.000d {+00d 00' 00"} (J2000),
                  +0.118d {+00d 07' 06"} (current),
                  -0.278d {-00d 16' 41"} (1950)
GRB_DATE:        19313 TJD;    99 DOY;   21/04/09
GRB_TIME:        49445.18 SOD {13:44:05.18} UT
TRIGGER_INDEX:   0
GRB_PHI:           0.00 [deg]
GRB_THETA:         0.00 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     


 GCN template for BAT paragraph 


  •  Click here! 

    At 13:44:05 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 210409 ***A*** (trigger=1042031).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 0.000, +0.000 which is 
   RA(J2000) = 00h 00m 00s
   Dec(J2000) = +00d 00' 00"
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 ~0 counts/sec (15-350 keV), at ~ 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
    




    T50 and T90 calculation
    

     

    

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

    bat_grb_pos_cat.sh 0.000 0.000 0.083
GRB071112C      (   0.000 ,   0.000 )    delta=  0.000   deg.

    

    Search for this GRB position to the source locations in BAT transient monitor (search radius within 12 arcmin)
    

    python compare_catalog.py 0.000 0.000
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 9 13 281.557658  25.924849
 Obj: 2021 4 9 13 302.405308  33.619527

    

  •  the object visibility at GSFC, Greenbelt, Maryland

     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2021 4 9 13 259.827825  -1.643927
 Obj: 2021 4 9 13 275.915498  9.665050

    

  •  the object visibility at MMT, Mt. Hopkins, Arizona 

     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2021 4 9 13 256.426588  -6.238831
 Obj: 2021 4 9 13 272.855813  4.507122

    

  •  the object visibility at Hale Telescope, Palomar Mt., California

     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2021 4 9 13 237.784957  -43.012044
 Obj: 2021 4 9 13 257.337218  -31.020372

    

  •  the object visibility at Mauna Kea, Hawaii 

     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2021 4 9 13 37.251291  -61.767151
 Obj: 2021 4 9 13 357.495134  -58.826801

    

  •  the object visibility at Siding Spring Obs., Australia 

     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2021 4 9 13 136.692455  -37.309482
 Obj: 2021 4 9 13 154.204386  -52.639183

    

  •  the object visibility at Tokyo, Japan 

     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2021 4 9 13 349.683379  68.723583
 Obj: 2021 4 9 13 28.092728  58.230906

    

  •  the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain

     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2021 4 9 13 244.792278  23.486500
 Obj: 2021 4 9 13 237.703435  42.196567

    

  •  the object visibility at Gemini South, Cerro Pachon, Chile 

     
 
 
The data/results are in /local/data/bat1/prebascript/trigger1042031/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:
Fri Apr  9 09:55:42 EDT 2021