TDRSS lightcurve for Trigger=1107466
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sat 21 May 22 23:20:34 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1107466, Seg_Num: 0
GRB_RA: 275.197d {+18h 20m 47s} (J2000),
275.461d {+18h 21m 51s} (current),
274.607d {+18h 18m 26s} (1950)
GRB_DEC: +10.384d {+10d 23' 03"} (J2000),
+10.396d {+10d 23' 45"} (current),
+10.361d {+10d 21' 38"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 912 [cnts] Image_Peak=101 [image_cnts]
TRIGGER_DUR: 0.256 [sec]
TRIGGER_INDEX: 37 E_range: 25-100 keV
BKG_INTEN: 15827 [cnts]
BKG_TIME: 84010.81 SOD {23:20:10.81} UT
BKG_DUR: 8 [sec]
GRB_DATE: 19720 TJD; 141 DOY; 22/05/21
GRB_TIME: 84021.44 SOD {23:20:21.44} UT
GRB_PHI: -78.50 [deg]
GRB_THETA: 29.50 [deg]
SOLN_STATUS: 0x20000003
RATE_SIGNIF: 21.63 [sigma]
IMAGE_SIGNIF: 9.92 [sigma]
MERIT_PARAMS: +1 +0 +0 -2 +2 +0 +0 +0 +67 +0
SUN_POSTN: 58.74d {+03h 54m 57s} +20.33d {+20d 19' 55"}
SUN_DIST: 132.58 [deg] Sun_angle= 9.6 [hr] (West of Sun)
MOON_POSTN: 324.60d {+21h 38m 23s} -19.70d {-19d 41' 45"}
MOON_DIST: 56.97 [deg]
MOON_ILLUM: 59 [%]
GAL_COORDS: 38.82, 11.47 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 276.15, 33.71 [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 = 93.59,-2.81 [deg].
COMMENTS:
COMMENTS: NOTE: This BAT event is temporally(0.0<100sec) coincident with the FERMI_GBM event (trignum=674868026).
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sat 21 May 22 23:37:40 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 1107466, Seg_Num: 0
GRB_RA: 275.197d {+18h 20m 47s} (J2000),
275.461d {+18h 21m 51s} (current),
274.607d {+18h 18m 26s} (1950)
GRB_DEC: +10.384d {+10d 23' 03"} (J2000),
+10.396d {+10d 23' 45"} (current),
+10.361d {+10d 21' 38"} (1950)
GRB_DATE: 19720 TJD; 141 DOY; 22/05/21
GRB_TIME: 84021.44 SOD {23:20:21.44} UT
TRIGGER_INDEX: 37
GRB_PHI: -78.50 [deg]
GRB_THETA: 29.50 [deg]
DELTA_TIME: 58.00 [sec]
TRIGGER_DUR: 0.256 [sec]
SOLN_STATUS: 0x3
RATE_SIGNIF: 21.63 [sigma]
IMAGE_SIGNIF: 9.92 [sigma]
LC_URL: sw01107466000msb.lc
GCN template for BAT paragraph
Click here!
At 23:20:21 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 220521 ***A*** (trigger=1107466). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 275.197, +10.384 which is
RA(J2000) = 18h 20m 47s
Dec(J2000) = +10d 23' 03"
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 ~4012 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: 30.336 s +/- 0.729712 s
Estimated T50 duration: 18.816 s +/- 0.527758 s
Estimated Peak Interval: MET 674868051.07200003 +/- 0.500000 s
Estimated background rate 1: 4541.716 near MET 674868037.280000 s
Estimated background rate 2: 3883.742 near MET 674868173.632000 s
Estimated total duration: 62.784 s (for data selection)
(from MET 674868047.360000 to MET 674868110.144000)
Estimated total fluence: 14201.369025 count
Created GTI with 12 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 275.197 10.384 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 275.197 10.384
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: 2022 5 21 23 105.175902 13.753440
Obj: 2022 5 21 23 235.857095 -21.126672
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2022 5 21 23 90.711436 40.240270
Obj: 2022 5 21 23 204.884585 -44.649381
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2022 5 21 23 85.810336 45.235289
Obj: 2022 5 21 23 196.401173 -44.870043
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2022 5 21 23 94.800899 80.706716
Obj: 2022 5 21 23 136.455011 -49.860563
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2022 5 21 23 226.403581 22.314236
Obj: 2022 5 21 23 95.039751 -11.924006
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2022 5 21 23 267.255946 33.825973
Obj: 2022 5 21 23 93.682062 13.146929
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2022 5 21 23 143.634125 -31.752666
Obj: 2022 5 21 23 270.576719 23.044985
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2022 5 21 23 105.767548 -13.748787
Obj: 2022 5 21 23 277.559979 -33.100388
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger1107466/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:
Sat May 21 19:38:22 EDT 2022