TITLE:   GCN CIRCULAR
NUMBER:  27506
SUBJECT: IPN triangulation of GRB 200407A (short)
DATE:    20/04/07 17:57:46 GMT
FROM:    Anna Ridnaia at Ioffe Institute  <ridnaia@mail.ioffe.ru>

A. Ridnaia, 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,

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 short-duration GRB 200407A
(Fermi-GBM detection: The Fermi GBM team, GCN Circ. 27502)
has been detected by Fermi (GBM trigger 607933326) and
INTEGRAL (SPI-ACS), so far, at about 22921 s UT (06:22:01).

We have triangulated it to a GBM-INTEGRAL annulus centered at
RA(2000)=217.298 deg (14h 29m 12s)  Dec(2000)=+55.704 deg (+55d 42' 15"),
whose radius is 66.821 +/- 4.108 deg (3 sigma).

The IPN localization is consistent with, but reduces the area of, the
Fermi-GBM one.

This localization may be improved.

A triangulation map is posted at
http://www.ioffe.ru/LEA/GRBs/GRB200407_T22921/IPN/