TDRSS lightcurve for Trigger=1104842

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 01 May 22 19:52:11 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     1104842,   Seg_Num: 0
GRB_RA:           85.577d {+05h 42m 18s} (J2000),
                  85.894d {+05h 43m 35s} (current),
                  84.867d {+05h 39m 28s} (1950)
GRB_DEC:         +14.033d {+14d 02' 00"} (J2000),
                 +14.043d {+14d 02' 34"} (current),
                 +14.010d {+14d 00' 37"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       3195 [cnts]    Image_Peak=197 [image_cnts]
TRIGGER_DUR:     1.024 [sec] 
TRIGGER_INDEX:   155     E_range: 50-350 keV
BKG_INTEN:       15983 [cnts]
BKG_TIME:        71498.93 SOD {19:51:38.93} UT
BKG_DUR:         8 [sec]
GRB_DATE:        19700 TJD;   121 DOY;   22/05/01
GRB_TIME:        71511.22 SOD {19:51:51.22} UT
GRB_PHI:         -69.25 [deg]
GRB_THETA:        12.61 [deg]
SOLN_STATUS:     0x20000003
RATE_SIGNIF:     23.83 [sigma]
IMAGE_SIGNIF:    8.97 [sigma]
MERIT_PARAMS:     +1  +0  +0  +0  +3  -1 -100  +1 -70  +0 
SUN_POSTN:        38.99d {+02h 35m 58s}  +15.26d {+15d 15' 22"}
SUN_DIST:         45.31 [deg]   Sun_angle= -3.1 [hr] (East of Sun)
MOON_POSTN:       49.89d {+03h 19m 34s}  +18.46d {+18d 27' 25"}
MOON_DIST:        34.79 [deg]
MOON_ILLUM:      1 [%]
GAL_COORDS:      192.38, -8.39 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       85.65, -9.34 [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:        This trigger occurred at longitude,latitude = 263.54,12.40 [deg].  
COMMENTS:           
COMMENTS:        NOTE: This BAT event is temporally(1.0<100sec) coincident with the FERMI_GBM event (trignum=673127515).

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 01 May 22 20:09:11 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     1104842,   Seg_Num: 0
GRB_RA:           85.577d {+05h 42m 18s} (J2000),
                  85.894d {+05h 43m 35s} (current),
                  84.867d {+05h 39m 28s} (1950)
GRB_DEC:         +14.033d {+14d 02' 00"} (J2000),
                 +14.043d {+14d 02' 34"} (current),
                 +14.010d {+14d 00' 37"} (1950)
GRB_DATE:        19700 TJD;   121 DOY;   22/05/01
GRB_TIME:        71511.22 SOD {19:51:51.22} UT
TRIGGER_INDEX:   155
GRB_PHI:         -69.25 [deg]
GRB_THETA:        12.61 [deg]
DELTA_TIME:      51.00 [sec]
TRIGGER_DUR:     1.024 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     23.83 [sigma]
IMAGE_SIGNIF:    8.97 [sigma]
LC_URL:          sw01104842000msb.lc

GCN template for BAT paragraph

  • Click here! 
    At 19:51:51 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 220501 ***A*** (trigger=1104842).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 85.577, +14.033 which is 
   RA(J2000) = 05h 42m 18s
   Dec(J2000) = +14d 02' 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 ~2518 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

    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: 92.16 s +/- 2.89772 s
  Estimated T50 duration: 28.288 s +/- 1.03197 s
  Estimated Peak Interval: MET   673127541.44000006 +/- 0.500000 s
  Estimated background rate 1:     4573.483 near MET 673127527.680000 s
  Estimated background rate 2:     4438.420 near MET 673127700.096000 s
  Estimated total duration: 134.912 s (for data selection)
       (from MET 673127538.560000 to MET 673127673.472000)
  Estimated total fluence: 34482.454124 count
  Created GTI with 11 entries
------------------------------------------

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

    bat_grb_pos_cat.sh 85.577 14.033 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 85.577 14.033
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 5 1 20 70.319299  45.278289
 Obj: 2022 5 1 20 351.895569  64.828670
  • the object visibility at GSFC, Greenbelt, Maryland 
     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2022 5 1 20 29.602589  71.484844
 Obj: 2022 5 1 20 288.481507  51.421691
  • the object visibility at MMT, Mt. Hopkins, Arizona 
     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2022 5 1 20 10.378777  71.646571
 Obj: 2022 5 1 20 285.402665  46.108134
  • the object visibility at Hale Telescope, Palomar Mt., California 
     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2022 5 1 20 272.027440  56.140296
 Obj: 2022 5 1 20 259.210038  11.932180
  • the object visibility at Mauna Kea, Hawaii 
     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2022 5 1 20 257.213676  -8.476317
 Obj: 2022 5 1 20 284.123814  -47.597509
  • the object visibility at Siding Spring Obs., Australia 
     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2022 5 1 20 247.607219  -5.091717
 Obj: 2022 5 1 20 211.318711  -35.733539
  • the object visibility at Tokyo, Japan 
     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2022 5 1 20 109.305375  -3.147421
 Obj: 2022 5 1 20 86.285682  36.765910
  • the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain 
     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2022 5 1 20 126.726815  24.201999
 Obj: 2022 5 1 20 176.731263  45.537881
  • the object visibility at Gemini South, Cerro Pachon, Chile 
     
 
 
The data/results are in /local/data/bat1/prebascript/trigger1104842/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:
Sun May  1 16:10:06 EDT 2022