TITLE:   GCN CIRCULAR
NUMBER:  37026
SUBJECT: IPN triangulation of GRB 240802A / EP 240802a
DATE:    24/08/04 13:52:18 GMT
FROM:    Dmitry Svinkin at Ioffe Institute <svinkin@mail.ioffe.ru>

D. Svinkin, D. Frederiks, A. Ridnaia, A. Lysenko,
and T. Cline on behalf of the Konus-Wind team,

E. Burns, on behalf of the IPN,

E. Bozzo and C. Ferrigno, on behalf of the INTEGRAL SPI-ACS GRB team,

G. Waratkar, V. Jethwani, J.Joshi, V. Bhalerao, D. Bhattacharya, and S. Vadawale, 
on behalf of the Astrosat-CZTI team, report:

The long-duration GRB 240802A
(AstroSat-CZTI detection: Waratkar et al., GCN 37018;
SVOM-GRM detection: Wang et al., GCN 37022)
was detected by Astrosat (CZTI), Konus-Wind, and INTEGRAL (SPI-ACS), 
and SVOM (GRM) at about 38044 s UT (10:34:04).

We have triangulated it to a preliminary, 3 sigma error region
whose area is 394 sq. deg, and its maximum
dimension is 51 deg (the minimum one is 6.7 deg).

This localization may be improved.

The X-ray transient EP 240802a (Wang et al., GCN 37019) is inside the region 
(at the distance of 0.7 deg from the center line of the Konus-SPI-ACS annulus and 
0.4 deg from the center line of Konus-CZTI annulus), 
supporting the association of the GRB and EP 240802a.

A triangulation map and HEALPix FITS file are posted at
http://www.ioffe.ru/LEA/GRBs/GRB240802_T38048/IPN/
The HEALPix triangulation map is the multi-order HEALPix in units of probability density.

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