TITLE:   GCN CIRCULAR
NUMBER:  24029
SUBJECT: IPN Triangulation of GRB 190329A (long/bright)
DATE:    19/03/31 19:47:26 GMT
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. von Kienlin, X. Zhang, A. Rau, V. Savchenko, E. Bozzo,
and C. Ferrigno, on behalf of the INTEGRAL SPI-ACS GRB team,

A. Ursi, N. Parmiggiani, F. Verrecchia, A. Bulgarelli,
A. Trois, M. Marisaldi, C. Pittori, M. Tavani, Y. Evangelista,
I. Donnarumma, M. Cardillo, G. Piano, G. Minervini, A. Argan,
F. Lucarelli, A. Zoli, V. Fioretti, F. Fuschino, M. Pilia,
F. Longo, A. Giuliani on behalf of the AGILE 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, bright GRB 190329A was detected by
Konus-Wind, Mars-Odyssey (HEND), INTEGRAL (SPI-ACS),
AGILE (MCAL), and CALET (GBM trigger 1237875481),
at about 22910 s UT (06:21:50).

We have triangulated it to a preliminary, 3 sigma error box
whose coordinates are:
---------------------------------------------
   RA(2000), deg                 Dec(2000), deg
  ---------------------------------------------
  Center:
   333.269 (22h 13m 05s) +19.640 (+19d 38' 25")
  Corners:
   333.369 (22h 13m 29s) +19.121 (+19d 07' 16")
   333.043 (22h 12m 10s) +20.087 (+20d 05' 13")
   333.169 (22h 12m 41s) +20.159 (+20d 09' 31")
   333.495 (22h 13m 59s) +19.194 (+19d 11' 38")
  ---------------------------------------------
The error box area is about 492 sq. arcmin, and its maximum
dimension is 1.06 deg (the minimum one is 8.04 arcmin).
The Sun distance was about 37 deg.

This box may be improved.

A triangulation map is posted at
http://www.ioffe.ru/LEA/GRBs/GRB190329_T22905/IPN/

The time history and spectrum will be given in forthcoming GCN Circulars.