Decay and regeneration of the galactic magnetic field in the presence of magnetic monopoles

The resonant character of magnetic field damping by moving magnetic monopoles allows the field to survive indefinitely when the monopole plasma frequency is sufficiently large, even if the field is immersed in a conducting plasma. Dynamo growth of galactic field can still occur on time scales approx...

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Veröffentlicht in:	Phys. Rev. Lett.; (United States) 1983-01, Vol.50 (7), p.544-547
Hauptverfasser:	ARONS, J, BLANDFORD, R. D
Format:	Artikel
Sprache:	eng
Schlagworte:	Astronomy Characteristics and properties of the milky way CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS DAMPING Earth, ocean, space ELEMENTARY PARTICLES Exact sciences and technology GALAXIES LANGMUIR FREQUENCY MAGNETIC FIELDS MAGNETIC MONOPOLES MASS MILKY WAY MONOPOLES POSTULATED PARTICLES 640105 > Astrophysics & Cosmology-- Galaxies STABILITY Stellar systems. Galactic and extragalactic objects and systems. The universe
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Beschreibung
Zusammenfassung:	The resonant character of magnetic field damping by moving magnetic monopoles allows the field to survive indefinitely when the monopole plasma frequency is sufficiently large, even if the field is immersed in a conducting plasma. Dynamo growth of galactic field can still occur on time scales approx.10/sup 7/--10/sup 8/ yr in the presence of a halo composed of monopoles. A linear stability analysis suggests that a monopole's mass is mapprox.10/sup 18/ GeV/c/sup 2/ and that the monopoles should have an anisotropic flux approx.1 m/sup -2/ yr/sup -1/ sr/sup -1/.
ISSN:	0031-9007 1079-7114
DOI:	10.1103/PhysRevLett.50.544