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GCN Circular 24393

Subject
IPN triangulation of GRB 190504A (short)
Date
2019-05-05T01:20:57Z (5 years ago)
From
Dmitry Svinkin at Ioffe Institute <svinkin@mail.ioffe.ru>
D. Svinkin and K. Hurley, on behalf of the IPN,

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,
report:

The short-duration GRB 190504A has been detected
by Fermi (GBM trigger 578679393) and INTEGRAL (SPI-ACS), so far,
at about 58588 s UT (16:16:28).

We have triangulated this GRB to a GBM-INTEGRAL annulus centered at
RA(2000)=282.762 deg (18h 51m 03s) Dec(2000)=+33.543 deg (+33d 32' 34"),
whose radius is 87.799 +/- 10.241 deg (3 sigma).

The annulus is inconsistent with the high-energy neutrino candidate
event IceCube-190503A (IceCube Collaboration GCN Circ. 24378).

This annulus may be improved.

A triangulation map is posted at
http://www.ioffe.ru/LEA/GRBs/GRB190504_T58588/IPN/
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