Magnetic helicity in galactic dynamos

dc.contributor.author	Subramanian, K
dc.date.accessioned	2008-07-22T11:44:33Z
dc.date.available	2008-07-22T11:44:33Z
dc.date.issued	2002-09
dc.identifier.citation	BASI, Vol. 30, No. 3, pp. 715 - 721	en
dc.identifier.uri	http://hdl.handle.net/2248/2821
dc.description.abstract	Magnetic fields correlated on kiloparsec scales are seen in spiral galaxies. Their origin ~ould be due to amplification of a small seed field by a turbulent galactic dynamo. We review the current status of the galactic dynamo, especially the constraints imposed by magnetic helicity conservation. We estimate the minimal strength of the large-scale magnetic field which could arise in spite of the helicity constraint.	en
dc.format.extent	283038 bytes
dc.format.mimetype	application/pdf
dc.language.iso	en	en
dc.publisher	Astronomical Society of India	en
dc.subject	Galaxies	en
dc.subject	Galactic Magnetic Fields	en
dc.subject	Dynamos	en
dc.subject	Magnetic Helicity	en
dc.title	Magnetic helicity in galactic dynamos	en
dc.type	Article	en