TDRSS lightcurve for Trigger=1277277
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sat 28 Dec 24 03:57:37 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1277277, Seg_Num: 0
GRB_RA: 344.824d {+22h 59m 18s} (J2000),
345.132d {+23h 00m 32s} (current),
344.208d {+22h 56m 50s} (1950)
GRB_DEC: +18.604d {+18d 36' 14"} (J2000),
+18.738d {+18d 44' 18"} (current),
+18.336d {+18d 20' 09"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 3751 [cnts] Image_Peak=560 [image_cnts]
TRIGGER_DUR: 0.512 [sec]
TRIGGER_INDEX: 41 E_range: 25-100 keV
BKG_INTEN: 15856 [cnts]
BKG_TIME: 14221.20 SOD {03:57:01.20} UT
BKG_DUR: 8 [sec]
GRB_DATE: 20672 TJD; 363 DOY; 24/12/28
GRB_TIME: 14235.16 SOD {03:57:15.16} UT
GRB_PHI: -114.48 [deg]
GRB_THETA: 32.40 [deg]
SOLN_STATUS: 0x20000003
RATE_SIGNIF: 97.16 [sigma]
IMAGE_SIGNIF: 20.90 [sigma]
MERIT_PARAMS: +1 +0 +0 -1 +2 +7 +0 +0 -21 +0
SUN_POSTN: 277.52d {+18h 30m 05s} -23.26d {-23d 15' 18"}
SUN_DIST: 78.20 [deg] Sun_angle= -4.5 [hr] (East of Sun)
MOON_POSTN: 241.32d {+16h 05m 17s} -25.30d {-25d 18' 08"}
MOON_DIST: 109.98 [deg]
MOON_ILLUM: 8 [%]
GAL_COORDS: 89.13,-36.80 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 353.72, 23.04 [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 = 170.95,19.83 [deg].
COMMENTS:
COMMENTS: NOTE: This BAT event is temporally(5.0<100sec) coincident with the FERMI_GBM event (trignum=757051035).
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sat 28 Dec 24 04:19:23 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 1277277, Seg_Num: 0
GRB_RA: 344.824d {+22h 59m 18s} (J2000),
345.132d {+23h 00m 32s} (current),
344.208d {+22h 56m 50s} (1950)
GRB_DEC: +18.604d {+18d 36' 14"} (J2000),
+18.738d {+18d 44' 18"} (current),
+18.336d {+18d 20' 09"} (1950)
GRB_DATE: 20672 TJD; 363 DOY; 24/12/28
GRB_TIME: 14235.16 SOD {03:57:15.16} UT
TRIGGER_INDEX: 41
GRB_PHI: -114.48 [deg]
GRB_THETA: 32.40 [deg]
DELTA_TIME: 45.00 [sec]
TRIGGER_DUR: 0.512 [sec]
SOLN_STATUS: 0x3
RATE_SIGNIF: 97.16 [sigma]
IMAGE_SIGNIF: 20.90 [sigma]
LC_URL: sw01277277000msb.lc
GCN template for BAT paragraph
Click here!
At 03:57:15 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 241228 ***A*** (trigger=1277277). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 344.824, +18.604 which is
RA(J2000) = 22h 59m 18s
Dec(J2000) = +18d 36' 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 ~11085 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: 72.256 s +/- 61.8568 s
Estimated T50 duration: 2.56 s +/- 0.128 s
Estimated Peak Interval: MET 757051072.44799995 +/- 0.500000 s
Estimated background rate 1: 5622.396 near MET 757051055.040000 s
Estimated background rate 2: 5482.320 near MET 757051231.744000 s
Estimated total duration: 143.488 s (for data selection)
(from MET 757051063.680000 to MET 757051207.168000)
Estimated total fluence: 24554.205248 count
Created GTI with 25 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 344.824 18.604 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 344.824 18.604
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: 2024 12 28 4 130.964351 -68.199527
Obj: 2024 12 28 4 107.497536 8.185340
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2024 12 28 4 87.019269 -43.742000
Obj: 2024 12 28 4 92.031455 34.314680
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2024 12 28 4 85.545636 -38.816817
Obj: 2024 12 28 4 87.549135 39.355905
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2024 12 28 4 66.019854 -2.224676
Obj: 2024 12 28 4 88.542528 74.826793
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2024 12 28 4 100.841425 63.782769
Obj: 2024 12 28 4 222.593238 27.238519
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2024 12 28 4 12.430167 31.265880
Obj: 2024 12 28 4 272.458513 38.128582
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2024 12 28 4 271.311498 -52.758810
Obj: 2024 12 28 4 148.607368 -36.129842
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2024 12 28 4 13.386641 -35.227985
Obj: 2024 12 28 4 101.533036 -18.176932
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger1277277/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:
Fri Dec 27 23:19:42 EST 2024