TDRSS lightcurve for Trigger=1430212
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sun 04 Jan 26 05:37:21 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1430212, Seg_Num: 0
GRB_RA: 337.415d {+22h 29m 40s} (J2000),
337.770d {+22h 31m 05s} (current),
336.732d {+22h 26m 56s} (1950)
GRB_DEC: -21.280d {-21d 16' 48"} (J2000),
-21.147d {-21d 08' 47"} (current),
-21.537d {-21d 32' 12"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 2812 [cnts] Image_Peak=181 [image_cnts]
TRIGGER_DUR: 1.024 [sec]
TRIGGER_INDEX: 146 E_range: 25-100 keV
BKG_INTEN: 16064 [cnts]
BKG_TIME: 20211.01 SOD {05:36:51.01} UT
BKG_DUR: 8 [sec]
GRB_DATE: 21044 TJD; 4 DOY; 26/01/04
GRB_TIME: 20222.85 SOD {05:37:02.85} UT
GRB_PHI: -2.35 [deg]
GRB_THETA: 17.67 [deg]
SOLN_STATUS: 0x3
RATE_SIGNIF: 15.62 [sigma]
IMAGE_SIGNIF: 8.63 [sigma]
MERIT_PARAMS: +1 +0 +0 +0 +2 -1 +0 +0 -66 +0
SUN_POSTN: 285.06d {+19h 00m 13s} -22.71d {-22d 42' 48"}
SUN_DIST: 48.66 [deg] Sun_angle= -3.5 [hr] (East of Sun)
MOON_POSTN: 117.71d {+07h 50m 51s} +24.65d {+24d 39' 14"}
MOON_DIST: 143.06 [deg]
MOON_ILLUM: 99 [%]
GAL_COORDS: 35.38,-57.26 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 331.21,-10.99 [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 = 114.13,-16.69 [deg].
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sun 04 Jan 26 06:00:01 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 1430212, Seg_Num: 0
GRB_RA: 337.415d {+22h 29m 40s} (J2000),
337.770d {+22h 31m 05s} (current),
336.732d {+22h 26m 56s} (1950)
GRB_DEC: -21.280d {-21d 16' 48"} (J2000),
-21.147d {-21d 08' 47"} (current),
-21.537d {-21d 32' 12"} (1950)
GRB_DATE: 21044 TJD; 4 DOY; 26/01/04
GRB_TIME: 20222.85 SOD {05:37:02.85} UT
TRIGGER_INDEX: 146
GRB_PHI: -2.35 [deg]
GRB_THETA: 17.67 [deg]
DELTA_TIME: -63.00 [sec]
TRIGGER_DUR: 1.024 [sec]
SOLN_STATUS: 0x3
RATE_SIGNIF: 15.62 [sigma]
IMAGE_SIGNIF: 8.63 [sigma]
LC_URL: sw01430212000msb.lc
GCN template for BAT paragraph
Click here!
At 05:37:02 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 260104 ***A*** (trigger=1430212). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 337.415, -21.280 which is
RA(J2000) = 22h 29m 40s
Dec(J2000) = -21d 16' 48"
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 ~2351 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: 7.936 s +/- 0.32 s
Estimated T50 duration: 4.224 s +/- 0.32 s
Estimated Peak Interval: MET 789197860.35200000 +/- 0.500000 s
Estimated background rate 1: 3715.517 near MET 789197844.480000 s
Estimated background rate 2: 3575.017 near MET 789197991.872000 s
Estimated total duration: 84.864 s (for data selection)
(from MET 789197853.760000 to MET 789197938.624000)
Estimated total fluence: 5232.458498 count
Created GTI with 7 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 337.415 -21.280 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 337.415 -21.280
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: 2026 1 4 6 214.154420 -71.049821
Obj: 2026 1 4 6 104.641664 -50.529508
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2026 1 4 6 108.511761 -68.069517
Obj: 2026 1 4 6 78.562049 -23.057919
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2026 1 4 6 105.543560 -62.761391
Obj: 2026 1 4 6 76.373853 -18.494627
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2026 1 4 6 74.115721 -27.912751
Obj: 2026 1 4 6 58.433020 18.294149
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2026 1 4 6 84.725670 38.710570
Obj: 2026 1 4 6 156.486702 79.025872
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2026 1 4 6 40.152212 20.967519
Obj: 2026 1 4 6 346.642345 33.269575
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2026 1 4 6 282.323096 -27.224343
Obj: 2026 1 4 6 248.625145 -72.264712
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2026 1 4 6 340.575283 -34.430253
Obj: 2026 1 4 6 37.831725 -28.332035
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger1430212/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 Jan 4 01:00:24 EST 2026