Forum Springer Astron. Astrophys.
Forum Whats New Search Orders

Astron. Astrophys. 332, L41-L44 (1998)

Table of Contents
Available formats: HTML | PDF | (gzipped) PostScript

Letter to the Editor

Magnetic fields in young galaxies due to the cross-helicity effect

Axel Brandenburg 1 and Vadim Urpin 1, 2

1 Department of Mathematics, University of Newcastle upon Tyne, NE1 7RU, UK
2 A. F. Ioffe Institute for Physics and Technology, 94021 St. Petersburg, Russia

Received 28 October 1997 / Accepted 3 February 1998


It is shown that the cross-helicity effect facilitates rapid growth of the large scale magnetic field in young galaxies. This field then acts as a seed for the standard [FORMULA] -type dynamo at later stages. This mechanism may be responsible for the relatively strong magnetic fields observed in young high redshift galaxies.

Key words: magnetohydrodynamics – interstellar medium: magnetic fields – galaxies: magnetic fields – galaxies: evolution

© European Southern Observatory (ESO) 1998

Online publication: March 30, 1998