TDRSS lightcurve for Trigger=1278305
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Wed 01 Jan 25 13:23:31 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1278305, Seg_Num: 0
GRB_RA: 37.061d {+02h 28m 15s} (J2000),
37.411d {+02h 29m 39s} (current),
36.363d {+02h 25m 27s} (1950)
GRB_DEC: +19.154d {+19d 09' 14"} (J2000),
+19.265d {+19d 15' 53"} (current),
+18.931d {+18d 55' 51"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 8862 [cnts] Image_Peak=219 [image_cnts]
TRIGGER_DUR: 4.096 [sec]
TRIGGER_INDEX: 299 E_range: 25-100 keV
BKG_INTEN: 78967 [cnts]
BKG_TIME: 48109.18 SOD {13:21:49.18} UT
BKG_DUR: 40 [sec]
GRB_DATE: 20676 TJD; 1 DOY; 25/01/01
GRB_TIME: 48170.04 SOD {13:22:50.04} UT
GRB_PHI: 140.94 [deg]
GRB_THETA: 31.55 [deg]
SOLN_STATUS: 0x83
RATE_SIGNIF: 7.21 [sigma]
IMAGE_SIGNIF: 6.96 [sigma]
MERIT_PARAMS: +1 +0 +0 +2 +2 -3 +0 +0 +48 +0
SUN_POSTN: 282.38d {+18h 49m 30s} -22.95d {-22d 56' 50"}
SUN_DIST: 119.77 [deg] Sun_angle= -7.7 [hr] (East of Sun)
MOON_POSTN: 304.71d {+20h 18m 51s} -24.10d {-24d 06' 08"}
MOON_DIST: 100.10 [deg]
MOON_ILLUM: 3 [%]
GAL_COORDS: 152.42,-38.11 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 40.89, 4.28 [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 = 108.25,-13.48 [deg].
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Wed 01 Jan 25 13:43:24 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 1278305, Seg_Num: 0
GRB_RA: 37.061d {+02h 28m 15s} (J2000),
37.411d {+02h 29m 39s} (current),
36.363d {+02h 25m 27s} (1950)
GRB_DEC: +19.154d {+19d 09' 14"} (J2000),
+19.265d {+19d 15' 53"} (current),
+18.931d {+18d 55' 51"} (1950)
GRB_DATE: 20676 TJD; 1 DOY; 25/01/01
GRB_TIME: 48170.04 SOD {13:22:50.04} UT
TRIGGER_INDEX: 299
GRB_PHI: 140.94 [deg]
GRB_THETA: 31.55 [deg]
DELTA_TIME: -5.00 [sec]
TRIGGER_DUR: 4.096 [sec]
SOLN_STATUS: 0x83
RATE_SIGNIF: 7.21 [sigma]
IMAGE_SIGNIF: 6.96 [sigma]
LC_URL: sw01278305000msb.lc
GCN template for BAT paragraph
Click here!
At 13:22:50 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 250101 ***A*** (trigger=1278305). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 37.061, +19.154 which is
RA(J2000) = 02h 28m 15s
Dec(J2000) = +19d 09' 14"
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 ~1085 counts/sec (15-350 keV), at ~5 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
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: 17.28 s +/- 0.461511 s
Estimated T50 duration: 8.32 s +/- 0.64 s
Estimated Peak Interval: MET 757430606.33599997 +/- 0.500000 s
Estimated background rate 1: 3842.110 near MET 757430592.384000 s
Estimated background rate 2: 3959.987 near MET 757430733.376000 s
Estimated total duration: 72.064 s (for data selection)
(from MET 757430603.968000 to MET 757430676.032000)
Estimated total fluence: 4271.607997 count
Created GTI with 4 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 37.061 19.154 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 37.061 19.154
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 1 13 304.406406 4.317681
Obj: 2025 1 1 13 181.826779 -31.742536
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2025 1 1 13 286.491709 -17.766944
Obj: 2025 1 1 13 144.168276 -30.381439
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2025 1 1 13 283.154058 -23.068618
Obj: 2025 1 1 13 139.379834 -25.951871
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2025 1 1 13 282.028023 -54.499424
Obj: 2025 1 1 13 112.598716 -5.128103
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2025 1 1 13 19.180887 -33.293606
Obj: 2025 1 1 13 131.307575 21.847076
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2025 1 1 13 102.023947 -58.275877
Obj: 2025 1 1 13 69.149929 58.651609
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2025 1 1 13 354.954933 38.093541
Obj: 2025 1 1 13 238.114855 -14.334651
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2025 1 1 13 276.336766 38.659101
Obj: 2025 1 1 13 326.584743 -76.998622
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger1278305/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 1 08:43:42 EST 2025