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GCN Circular 32202

Subject

IPN triangulation of GRB 220606C

Date

2022-06-15T17:58:12Z (3 years ago)

From

Dmitry Svinkin at Ioffe Institute <svinkin@mail.ioffe.ru>

A.S. Kozyrev, D.V. Golovin, M.L. Litvak, I.G. Mitrofanov, and A.B. Sanin
on behalf of the MGNS/BepiColombo team,

J. Benkhoff on behalf of the BepiColombo team,

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

and

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

The long-duration GRB 220606C
(CALET-CGBM detection: Nakahira et al., GCN Circ. 32180Loading...
 
 )
was detected by CALET (CGBM), INTEGRAL (SPI-ACS trigger 9949),
Konus-Wind, BepiColombo (MGNS), and GECAM-B (trigger tn220606_133517_fb)
at about 48918 s UT (13:35:18).

We have triangulated it to a preliminary, 3 sigma error box
whose coordinates are:
   ---------------------------------------------
    RA(2000), deg                 Dec(2000), deg
   ---------------------------------------------
   Center:
    201.004 (13h 24m 01s)  -5.258 ( -5d 15' 29")
   Corners:
    211.181 (14h 04m 43s)  +9.433 ( +9d 25' 59")
    210.801 (14h 03m 12s)  +8.552 ( +8d 33' 07")
    200.664 (13h 22m 39s) -22.171 (-22d 10' 16")
    200.417 (13h 21m 40s) -23.101 (-23d 06' 03")
   ---------------------------------------------
The error box area is 16.3 sq. deg, and its maximum
dimension is 34.2 deg (the minimum one is 28 arcmin).
The Sun distance was 125 deg.

A triangulation map and HEALPix FITS file are posted at
http://www.ioffe.ru/LEA/GRBs/GRB220606_T48919/IPN/

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