TDRSS lightcurve for Trigger=1282245
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Thu 16 Jan 25 21:31:50 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1282245, Seg_Num: 0
GRB_RA: 339.636d {+22h 38m 33s} (J2000),
339.954d {+22h 39m 49s} (current),
339.000d {+22h 36m 00s} (1950)
GRB_DEC: +3.074d {+03d 04' 26"} (J2000),
+3.205d {+03d 12' 17"} (current),
+2.813d {+02d 48' 48"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 11282 [cnts] Image_Peak=261 [image_cnts]
TRIGGER_DUR: 1.024 [sec]
TRIGGER_INDEX: 155 E_range: 50-350 keV
BKG_INTEN: 70664 [cnts]
BKG_TIME: 77477.09 SOD {21:31:17.09} UT
BKG_DUR: 8 [sec]
GRB_DATE: 20691 TJD; 16 DOY; 25/01/16
GRB_TIME: 77494.75 SOD {21:31:34.75} UT
GRB_PHI: -29.00 [deg]
GRB_THETA: 38.35 [deg]
SOLN_STATUS: 0x83
RATE_SIGNIF: 22.02 [sigma]
IMAGE_SIGNIF: 6.70 [sigma]
MERIT_PARAMS: +1 +0 +0 +0 +3 -4 +0 +0 -69 +0
SUN_POSTN: 299.06d {+19h 56m 14s} -20.75d {-20d 45' 05"}
SUN_DIST: 46.69 [deg] Sun_angle= -2.7 [hr] (East of Sun)
MOON_POSTN: 155.27d {+10h 21m 04s} +12.65d {+12d 39' 04"}
MOON_DIST: 163.48 [deg]
MOON_ILLUM: 91 [%]
GAL_COORDS: 71.01,-45.97 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 342.37, 10.80 [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: Since the IMAGE_SIGNIF is less than 7 sigma, this is a questionable detection.
COMMENTS: This trigger occurred at longitude,latitude = 279.91,-20.40 [deg].
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Thu 16 Jan 25 21:36:50 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 1282245, Seg_Num: 0
GRB_RA: 339.636d {+22h 38m 33s} (J2000),
339.954d {+22h 39m 49s} (current),
339.000d {+22h 36m 00s} (1950)
GRB_DEC: +3.074d {+03d 04' 26"} (J2000),
+3.205d {+03d 12' 17"} (current),
+2.813d {+02d 48' 48"} (1950)
GRB_DATE: 20691 TJD; 16 DOY; 25/01/16
GRB_TIME: 77494.75 SOD {21:31:34.75} UT
TRIGGER_INDEX: 155
GRB_PHI: -29.00 [deg]
GRB_THETA: 38.35 [deg]
DELTA_TIME: 3096.00 [sec]
TRIGGER_DUR: 1.024 [sec]
SOLN_STATUS: 0x83
RATE_SIGNIF: 22.02 [sigma]
IMAGE_SIGNIF: 6.70 [sigma]
LC_URL: sw01282245000msb.lc
GCN template for BAT paragraph
Click here!
At 21:31:34 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 250116 ***A*** (trigger=1282245). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 339.636, +3.074 which is
RA(J2000) = 22h 38m 33s
Dec(J2000) = +03d 04' 26"
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 ~7149 counts/sec (15-350 keV), at ~6 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
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: 25.472 s +/- 4.01928 s
Estimated T50 duration: 25.472 s +/- 12.0835 s
Estimated Peak Interval: MET 758755928.44799995 +/- 0.500000 s
Estimated background rate 1: 13316.250 near MET 758755907.200000 s
Estimated background rate 2: 19497.596 near MET 758755935.936000 s
Estimated total duration: 25.472 s (for data selection)
(from MET 758755908.800000 to MET 758755934.272000)
Estimated total fluence: -7608.445534 count
Created GTI with 8 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 339.636 3.074 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 339.636 3.074
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 16 21 51.418724 11.054244
Obj: 2025 1 16 21 23.433685 51.913228
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2025 1 16 21 23.919500 33.747573
Obj: 2025 1 16 21 322.842690 55.957580
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2025 1 16 21 17.132618 33.957451
Obj: 2025 1 16 21 315.884678 51.403016
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2025 1 16 21 329.206087 43.334179
Obj: 2025 1 16 21 275.959558 25.134371
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2025 1 16 21 282.870929 19.697397
Obj: 2025 1 16 21 283.639930 -27.001951
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2025 1 16 21 284.546376 -15.984864
Obj: 2025 1 16 21 236.518123 -34.465946
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2025 1 16 21 81.538238 -30.403147
Obj: 2025 1 16 21 84.640618 16.204785
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2025 1 16 21 84.608668 34.719275
Obj: 2025 1 16 21 146.650860 51.322419
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger1282245/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:
Thu Jan 16 16:37:23 EST 2025