Waves in a two-component model of galactic dynamo: Metastability and stochastic generation / Fedotov Sergei,Zubarev Andrei // PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS. - 2007. - V. 380, l. . - P. 226-234.

ISSN/EISSN:

0378-4371 / нет данных

Type:

Article

Abstract:

This paper is concerned with the stochastic generation of a large-scale galactic magnetic field and propagation of magnetic fronts in the subcritical regime. Starting with a two-component thin-disk alpha Omega-dynamo model in the axisymmetric case, we derive the equation for order parameter in the form of a stochastic reaction-diffusion equation with free energy functional. This equation describes subcritical generation of galactic magnetic field as a first-order phase transition in spatially extended system. We consider in particular a situation in which the magnetic field propagates as a plane front. We derive an approximate formula for propagation speed. (c) 2007 Elsevier B.V. All rights reserved.

Author keywords:

waves; galactic dynamo; metastability MAGNETIC FRONTS; GALAXIES

DOI:

10.1016/j.physa.2007.02.112

Web of Science ID:

ISI:000247243600017

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	JUL 1
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
Keywords-Plus	MAGNETIC FRONTS; GALAXIES
Research-Areas	Physics
Web-of-Science-Categories	Physics, Multidisciplinary
Author-Email	s.fedotov@umist.ac.uk
ResearcherID-Numbers	Zubarev, Adrey/B-4752-2014 Fedotov, Sergei/H-5880-2012
Number-of-Cited-References	23
Usage-Count-Since-2013	1
Journal-ISO	Physica A
Doc-Delivery-Number	178TS