TDRSS lightcurve for Trigger=1051453
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Thu 27 May 21 07:09:35 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1051453, Seg_Num: 0
GRB_RA: 172.355d {+11h 29m 25s} (J2000),
172.638d {+11h 30m 33s} (current),
171.690d {+11h 26m 46s} (1950)
GRB_DEC: +31.618d {+31d 37' 06"} (J2000),
+31.500d {+31d 30' 00"} (current),
+31.894d {+31d 53' 38"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 0 [cnts] Image_Peak=2546 [image_cnts]
TRIGGER_DUR: 96.000 [sec]
TRIGGER_INDEX: 20000 E_range: 15-50 keV
BKG_INTEN: 0 [cnts]
BKG_TIME: 0.00 SOD {00:00:00.00} UT
BKG_DUR: 0 [sec]
GRB_DATE: 19361 TJD; 147 DOY; 21/05/27
GRB_TIME: 25668.91 SOD {07:07:48.91} UT
GRB_PHI: -168.55 [deg]
GRB_THETA: 25.89 [deg]
SOLN_STATUS: 0x13
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 10.78 [sigma]
MERIT_PARAMS: +1 +0 +0 +7 +1 +0 +0 +0 +5 +0
SUN_POSTN: 64.36d {+04h 17m 27s} +21.35d {+21d 20' 44"}
SUN_DIST: 93.38 [deg] Sun_angle= -7.2 [hr] (East of Sun)
MOON_POSTN: 256.98d {+17h 07m 54s} -23.55d {-23d 33' 14"}
MOON_DIST: 97.57 [deg]
MOON_ILLUM: 99 [%]
GAL_COORDS: 193.90, 71.61 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 159.68, 25.84 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS: SWIFT-BAT GRB Coordinates.
COMMENTS: This is an image trigger. (The RATE_SIGNIF & BKG_{INTEN, TIME, DUR} are undefined.)
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 = 279.31,14.89 [deg].
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Thu 27 May 21 07:25:29 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 1051453, Seg_Num: 0
GRB_RA: 172.355d {+11h 29m 25s} (J2000),
172.638d {+11h 30m 33s} (current),
171.690d {+11h 26m 46s} (1950)
GRB_DEC: +31.618d {+31d 37' 06"} (J2000),
+31.500d {+31d 30' 00"} (current),
+31.894d {+31d 53' 38"} (1950)
GRB_DATE: 19361 TJD; 147 DOY; 21/05/27
GRB_TIME: 25668.91 SOD {07:07:48.91} UT
TRIGGER_INDEX: 20000
GRB_PHI: -168.55 [deg]
GRB_THETA: 25.89 [deg]
DELTA_TIME: 0.00 [sec]
TRIGGER_DUR: 96.000 [sec]
SOLN_STATUS: 0x13
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 10.78 [sigma]
LC_URL: sw01051453000msb.lc
GCN template for BAT paragraph
Click here!
At 07:07:48 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 210527 ***A*** (trigger=1051453). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 172.355, +31.618 which is
RA(J2000) = 11h 29m 25s
Dec(J2000) = +31d 37' 06"
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 ~1453 counts/sec (15-350 keV), at ~2 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
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: 76.736 s +/- 3.10944 s
Estimated T50 duration: 35.584 s +/- 2.89772 s
Estimated Peak Interval: MET 643792136.51199996 +/- 0.500000 s
Estimated background rate 1: 5309.821 near MET 643792077.600000 s
Estimated background rate 2: 5066.325 near MET 643792232.768000 s
Estimated total duration: 100.416 s (for data selection)
(from MET 643792083.200000 to MET 643792183.616000)
Estimated total fluence: 12692.608189 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 172.355 31.618 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 172.355 31.618
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: 2021 5 27 7 208.947797 -24.107571
Obj: 2021 5 27 7 120.757465 12.278110
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2021 5 27 7 173.406918 -36.710471
Obj: 2021 5 27 7 108.635810 34.652628
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2021 5 27 7 166.852428 -34.203797
Obj: 2021 5 27 7 105.325857 39.965775
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2021 5 27 7 127.251023 -25.917421
Obj: 2021 5 27 7 125.465384 67.464258
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2021 5 27 7 116.258166 1.487323
Obj: 2021 5 27 7 210.374816 19.398784
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2021 5 27 7 91.378888 38.055498
Obj: 2021 5 27 7 259.222264 47.838920
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2021 5 27 7 249.916890 7.842129
Obj: 2021 5 27 7 160.072583 -26.567254
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2021 5 27 7 278.111148 -58.072202
Obj: 2021 5 27 7 112.084777 -27.811465
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger1051453/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 May 27 03:25:42 EDT 2021