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Issue A&A Volume 422, Number 1, July IV 2004 Page(s) 23 - 27 Section Cosmology (including clusters of galaxies) DOI 10.1051/0004-6361:20035595

A&A 422, 23-27 (2004)
DOI: 10.1051/0004-6361:20035595

Magnetic amplification in cylindrical cosmological structure

G. Siemieniec-Ozieblo and Z. A. Golda

Astronomical Observatory, Jagellonian University, Faculty of Physics, Astronomy and Applied Computer Science, ul. Orla 171, 30-244 Kraków, Poland

(Received 29 October 2003 / Accepted 1 April 2004 )

Abstract
We derive the amplification of the cosmological magnetic field associated with forming gravitational structure. The self-similar solutions of magnetohydrodynamic equations are computed both in linear and nonlinear regimes. We find that the relatively fast magnetic field enhancement becomes substantial in the nonlinear phase.

Key words: cosmology: theory -- cosmology: miscellaneous

Offprint request: G. Siemieniec-Ozieblo, grazyna@oa.uj.edu.pl

© ESO 2004

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