TDRSS lightcurve for Trigger=1046414
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sun 02 May 21 17:46:18 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1046414, Seg_Num: 0
GRB_RA: 270.742d {+18h 02m 58s} (J2000),
271.083d {+18h 04m 20s} (current),
269.942d {+17h 59m 46s} (1950)
GRB_DEC: -29.818d {-29d 49' 05"} (J2000),
-29.817d {-29d 48' 58"} (current),
-29.820d {-29d 49' 11"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 0 [cnts] Image_Peak=5712 [image_cnts]
TRIGGER_DUR: 384.000 [sec] (=6.4 [min])
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: 19336 TJD; 122 DOY; 21/05/02
GRB_TIME: 63573.05 SOD {17:39:33.05} UT
GRB_PHI: 29.55 [deg]
GRB_THETA: 0.43 [deg]
SOLN_STATUS: 0x13
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 8.60 [sigma]
MERIT_PARAMS: +1 +0 +0 +7 +1 -1 +0 +1 +66 +0
SUN_POSTN: 40.10d {+02h 40m 23s} +15.60d {+15d 35' 59"}
SUN_DIST: 131.28 [deg] Sun_angle= 8.6 [hr] (West of Sun)
MOON_POSTN: 302.00d {+20h 08m 01s} -24.09d {-24d 05' 08"}
MOON_DIST: 28.06 [deg]
MOON_ILLUM: 62 [%]
GAL_COORDS: 1.15, -3.71 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 270.65, -6.38 [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 = 152.03,-10.50 [deg].
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sun 02 May 21 17:57:59 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 1046414, Seg_Num: 0
GRB_RA: 270.742d {+18h 02m 58s} (J2000),
271.083d {+18h 04m 20s} (current),
269.942d {+17h 59m 46s} (1950)
GRB_DEC: -29.818d {-29d 49' 05"} (J2000),
-29.817d {-29d 48' 58"} (current),
-29.820d {-29d 49' 11"} (1950)
GRB_DATE: 19336 TJD; 122 DOY; 21/05/02
GRB_TIME: 63573.05 SOD {17:39:33.05} UT
TRIGGER_INDEX: 20000
GRB_PHI: 29.55 [deg]
GRB_THETA: 0.43 [deg]
DELTA_TIME: 0.00 [sec]
TRIGGER_DUR: 384.000 [sec] (=6.4 [min])
SOLN_STATUS: 0x13
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 8.60 [sigma]
LC_URL: sw01046414000msb.lc
GCN template for BAT paragraph
Click here!
At 17:39:33 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 210502 ***A*** (trigger=1046414). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 270.742, -29.818 which is
RA(J2000) = 18h 02m 58s
Dec(J2000) = -29d 49' 05"
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 ~1242 counts/sec (15-350 keV), at ~7 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 background rate 1: 4638.488 near MET 641670011.328000 s
Estimated background rate 2: 4569.020 near MET 641670116.288000 s
Estimated total fluence: 0.000000 count
Created GTI with 2 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 270.742 -29.818 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 270.742 -29.818
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 2 17 356.084584 66.538221
Obj: 2021 5 2 17 85.442908 -46.259251
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2021 5 2 17 288.019568 53.832915
Obj: 2021 5 2 17 65.412819 -17.767445
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2021 5 2 17 285.002935 48.520334
Obj: 2021 5 2 17 63.239001 -13.941298
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2021 5 2 17 258.255540 14.173568
Obj: 2021 5 2 17 44.607442 21.620876
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2021 5 2 17 280.765238 -46.777443
Obj: 2021 5 2 17 257.378680 84.060045
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2021 5 2 17 212.483334 -33.505523
Obj: 2021 5 2 17 338.259663 22.087260
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2021 5 2 17 89.012405 35.738026
Obj: 2021 5 2 17 282.381791 -84.347427
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2021 5 2 17 174.271962 43.853611
Obj: 2021 5 2 17 40.892115 -15.232597
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger1046414/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:
Sun May 2 13:59:43 EDT 2021