GRB 200219B
GCN Circular 27167
Subject
IPN triangulation of GRB 200219B (inconsistent with the LIGO/Virgo S200219ac)
Date
2020-02-22T02:55:08Z (7 years ago)
From
Anna Ridnaia at Ioffe Institute <ridnaia@mail.ioffe.ru>
A. Ridnaia, S. Golenetskii, R. Aptekar, D. Frederiks, D. Svinkin,
and T. Cline on behalf of the Konus-Wind team,
K. Hurley, on behalf of the IPN,
A. Goldstein, M. S. Briggs, and C. Wilson-Hodge
on behalf of the Fermi GBM team, and
A. von Kienlin, X. Zhang, A. Rau, V. Savchenko, E. Bozzo,
and C. Ferrigno, on behalf of the INTEGRAL SPI-ACS GRB team, report:
The long-duration GRB 200219B
(Fermi-GBM detection: The Fermi GBM team, GCN 27127)
has been detected by Fermi (GBM trigger 603798859), Konus-Wind,
INTEGRAL (SPI-ACS), so far, at about 35652 s UT (09:54:12).
We have triangulated it to a preliminary, 3 sigma error arc whose
coordinates are:
---------------------------------------------
RA(2000), deg Dec(2000), deg
---------------------------------------------
Center:
305.322 (20h 21m 17s) +17.202 (+17d 12' 07")
Corners:
303.847 (20h 15m 23s) +18.943 (+18d 56' 35")
288.913 (19h 15m 39s) -24.952 (-24d 57' 07")
293.218 (19h 32m 52s) -21.998 (-21d 59' 52")
306.769 (20h 27m 05s) +15.451 (+15d 27' 04")
348.097 (23h 12m 23s) +15.820 (+15d 49' 13")
352.740 (23h 30m 58s) +17.960 (+17d 57' 35")
---------------------------------------------
The error arc area is 404.4 sq. deg, and its maximum
dimension is ~81 deg (the minimum one is ~5 deg).
The Sun distance was ~32 deg.
The LIGO/Virgo S200219ac localization (LIGO/Virgo Collaboration,
GCN Circ. 27130) is inconsistent with the arc.
This arc may be improved.
A triangulation map is posted at
http://www.ioffe.ru/LEA/GRBs/GRB200219_T35651/IPN/
The time history and spectrum will be given in forthcoming GCN Circulars.
GCN Circular 27127
Subject
GRB 200219B: Fermi GBM Final Real-time Localization
Date
2020-02-19T10:04:32Z (7 years ago)
From
Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>
The Fermi GBM team reports the detection of a likely LONG GRB
At 09:54:14 UT on 19 Feb 2020, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 200219B (trigger 603798859.677708 / 200219413).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 299.1, Dec = 6.7 (J2000 degrees, equivalent to J2000 19h 56m, 6d 42'), with a statistical uncertainty of 4.0 degrees.
The angle from the Fermi LAT boresight is 46.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200219413/quicklook/glg_skymap_all_bn200219413.png
The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200219413/quicklook/glg_healpix_all_bn200219413.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200219413/quicklook/glg_lc_medres34_bn200219413.gif