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GCN Circular 25139

Subject
IPN triangulation of GRB 190720A
Date
2019-07-22T22:53:38Z (5 years ago)
From
Dmitry Svinkin at Ioffe Institute <svinkin@mail.ioffe.ru>
K. Hurley, on behalf of the IPN,

I. G. Mitrofanov, D. Golovin, M. L. Litvak, and A. B. Sanin,
on behalf of the HEND-Odyssey GRB team,

D. Svinkin, S. Golenetskii, R. Aptekar, D. Frederiks, A. Kozlova,
and T. Cline on behalf of the Konus-Wind team,

A. Goldstein, M. S. Briggs, and C. Wilson-Hodge
on behalf of the Fermi GBM team,

A. von Kienlin, X. Zhang, A. Rau, V. Savchenko, E. Bozzo,
and C. Ferrigno, on behalf of the INTEGRAL SPI-ACS GRB team,

and

W. Boynton, C. Fellows, K. Harshman, H. Enos, and R. Starr,
on behalf of the GRS-Odyssey GRB team, report:

The long-duration GRB 190720A
(Fermi-GBM detection: Fermi GBM Team, GCN Circ. 25123,
Hui and Meegan, GCN Circ. 25131;
BALROG localization: Kunzweiler et al., GCN Circ. 25124)
was detected by Fermi (GBM trigger 585326534), Konus-Wind,
INTEGRAL (SPI-ACS), and Mars-Odyssey (HEND)
at about 52930 s UT (14:42:10).

We have triangulated it to a preliminary, 3 sigma error box
whose coordinates are:
  ---------------------------------------------
   RA(2000), deg                 Dec(2000), deg
  ---------------------------------------------
  Center:
   205.406 (13h 41m 37s) +41.340 (+41d 20' 25")
  Corners:
   205.272 (13h 41m 05s) +50.612 (+50d 36' 42")
   205.533 (13h 42m 08s) +49.639 (+49d 38' 19")
   204.561 (13h 38m 15s) +31.484 (+31d 29' 04")
   204.550 (13h 38m 12s) +32.598 (+32d 35' 54")
  ---------------------------------------------
The error box area is about 2.4 sq. deg, and its maximum
dimension is 19.1 deg (the minimum one is 7.8 arcmin).
The Sun distance was about 71 deg.

This box may be improved.

This burst is spatially and temporally inconsistent with
LIGO/Virgo S190720a (LVC GCN Circ. 25115).

A triangulation map is posted at
http://www.ioffe.ru/LEA/GRBs/GRB190720_T52927/IPN

The Konus-Wind time history and spectrum will be given in a forthcoming
GCN Circular.
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