Regular versus diffusive photospheric flux cancellation

Litvinenko, Yuri E.

Regular versus diffusive photospheric flux cancellation

dc.contributor.author	Litvinenko, Yuri E.
dc.date.accessioned	2011-08-10T23:52:59Z
dc.date.available	2011-08-10T23:52:59Z
dc.date.issued	2011
dc.description.abstract	Observations of photospheric flux cancellation on the Sun imply that cancellation can be a diffusive rather than regular process. A criterion is derived, which quantifies the parameter range in which diffusive photospheric cancellation should occur. Numerical estimates show that regular cancellation models should be expected to give a quantitatively accurate description of photospheric cancellation. The estimates rely on a recently suggested scaling for a turbulent magnetic diffusivity, which is consistent with the diffusivity measurements on spatial scales varying by almost two orders of magnitude. Application of the turbulent diffusivity to large-scale dispersal of the photospheric magnetic flux is discussed.	en_NZ
dc.format.mimetype	application/pdf
dc.identifier.citation	Litvinenko, Y.E. (2011). Regular versus diffusive photospheric flux cancellation. The Astrophysical Journal Letters, 731:L39.	en_NZ
dc.identifier.doi	10.1088/2041-8205/731/2/L39	en_NZ
dc.identifier.uri	https://hdl.handle.net/10289/5564
dc.language.iso	en
dc.publisher	The American Astronomical Society	en_NZ
dc.relation.isPartOf	The Astrophysical Journal Letters	en_NZ
dc.relation.uri	http://iopscience.iop.org/2041-8205/731/2/L39/pdf/apjl_731_2_39.pdf	en_NZ
dc.rights	This article has been published in the Astrophysical Journal Letters. © 2011 The American Astronomical Society.
dc.subject	magnetic fields	en_NZ
dc.subject	magnetic reconnection	en_NZ
dc.subject	sun: photosphere	en_NZ
dc.title	Regular versus diffusive photospheric flux cancellation	en_NZ
dc.type	Journal Article	en_NZ
pubs.begin-page	1	en_NZ
pubs.elements-id	36212
pubs.end-page	4	en_NZ
pubs.issue	2	en_NZ
pubs.volume	731	en_NZ