TDRSS lightcurve for Trigger=1285812

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 29 Jan 25 04:46:25 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     1285812,   Seg_Num: 0
GRB_RA:          198.689d {+13h 14m 45s} (J2000),
                 199.007d {+13h 16m 02s} (current),
                 198.057d {+13h 12m 14s} (1950)
GRB_DEC:          +5.039d {+05d 02' 19"} (J2000),
                  +4.907d {+04d 54' 24"} (current),
                  +5.303d {+05d 18' 10"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=1925 [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:        20704 TJD;    29 DOY;   25/01/29
GRB_TIME:        17109.01 SOD {04:45:09.01} UT
GRB_PHI:           1.20 [deg]
GRB_THETA:        27.31 [deg]
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    10.13 [sigma]
MERIT_PARAMS:     +1  +0  +0  +6  +1  +0  +0  +0 +40  +0 
SUN_POSTN:       311.97d {+20h 47m 52s}  -17.86d {-17d 51' 50"}
SUN_DIST:        113.34 [deg]   Sun_angle= 7.5 [hr] (West of Sun)
MOON_POSTN:      308.74d {+20h 34m 57s}  -22.95d {-22d 57' 05"}
MOON_DIST:       110.06 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:      318.08, 67.22 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      195.29, 11.98 [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 = 316.95,4.84 [deg].

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 29 Jan 25 05:02:31 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     1285812,   Seg_Num: 0
GRB_RA:          198.689d {+13h 14m 45s} (J2000),
                 199.007d {+13h 16m 02s} (current),
                 198.057d {+13h 12m 14s} (1950)
GRB_DEC:          +5.039d {+05d 02' 19"} (J2000),
                  +4.907d {+04d 54' 24"} (current),
                  +5.303d {+05d 18' 10"} (1950)
GRB_DATE:        20704 TJD;    29 DOY;   25/01/29
GRB_TIME:        17109.01 SOD {04:45:09.01} UT
TRIGGER_INDEX:   20000
GRB_PHI:           1.20 [deg]
GRB_THETA:        27.31 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     64.000 [sec] 
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    10.13 [sigma]
LC_URL:          sw01285812000msb.lc

GCN template for BAT paragraph

  • Click here! 
    At 04:45:09 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 250129 ***A*** (trigger=1285812).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 198.689, +5.039 which is 
   RA(J2000) = 13h 14m 45s
   Dec(J2000) = +05d 02' 19"
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 ~1717 counts/sec (15-350 keV), at ~183 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: 148.48 s +/- 39.8736 s
  Estimated T50 duration: 148.48 s +/- 71.0648 s
  Estimated Peak Interval: MET   759818800.89599991 +/- 0.500000 s
  Estimated background rate 1:     3913.749 near MET 759818748.672000 s
  Estimated background rate 2:     5224.854 near MET 759818927.872000 s
  Estimated total duration: 148.48 s (for data selection)
       (from MET 759818777.344000 to MET 759818925.824000)
  Estimated total fluence: -75921.238736 count
  Created GTI with 10 entries
------------------------------------------

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

    bat_grb_pos_cat.sh 198.689 5.039 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 198.689 5.039
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: 2025 1 29 5 165.300509  -68.312238
 Obj: 2025 1 29 5 277.203001  16.484314
  • the object visibility at GSFC, Greenbelt, Maryland 
     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2025 1 29 5 101.520517  -51.713323
 Obj: 2025 1 29 5 256.848748  -11.480090
  • the object visibility at MMT, Mt. Hopkins, Arizona 
     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2025 1 29 5 99.147170  -46.454034
 Obj: 2025 1 29 5 252.918664  -15.916464
  • the object visibility at Hale Telescope, Palomar Mt., California 
     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2025 1 29 5 74.860919  -11.219050
 Obj: 2025 1 29 5 231.803953  -52.467349
  • the object visibility at Mauna Kea, Hawaii 
     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2025 1 29 5 100.565745  51.213086
 Obj: 2025 1 29 5 49.039264  -53.620555
  • the object visibility at Siding Spring Obs., Australia 
     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2025 1 29 5 27.138109  33.051447
 Obj: 2025 1 29 5 125.060967  -33.362089
  • the object visibility at Tokyo, Japan 
     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2025 1 29 5 269.673176  -40.250673
 Obj: 2025 1 29 5 328.904733  62.838547
  • the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain 
     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2025 1 29 5 359.690540  -41.823090
 Obj: 2025 1 29 5 253.442218  17.172429
  • the object visibility at Gemini South, Cerro Pachon, Chile 
     
 
 
The data/results are in /local/data/bat1/prebascript/trigger1285812/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 Jan 29 00:03:05 EST 2025