The Current-Free Electric Double Layer in a Coronal Magnetic Funnel | Zendy

R. W. Boswell | Zendy; E. Marsch | Zendy; Christine Charles | Zendy

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The Current-Free Electric Double Layer in a Coronal Magnetic Funnel

Author(s) -

R. W. Boswell,

E. Marsch,

Christine Charles

Publication year - 2006

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/503155

Subject(s) - physics , funnel , magnetic field , plasma , corona (planetary geology) , nanoflares , coronal hole , astrophysics , computational physics , solar wind , coronal mass ejection , nuclear physics , astrobiology , chemistry , organic chemistry , quantum mechanics , venus

Current-free double layers (CFDLs) have been recently discovered in a number of laboratory devices, when a low collisional plasma is forced to expand from a high magnetic field source region to a low magnetic field diffusion region. This experimental setup bears a striking resemblance to the natural conditions prevailing in the magnetic funnels of the solar corona. It was commonly thought that magnetic-field-aligned potential disruptions were driven by electron currents, although the theoretical possibility of a CDFL has been known of for some time. Given its recent experimental verification, we make here a contribution to solar plasma physics by inves- tigating the possibility of CFDLs in coronal funnels, which have much in common with the laboratory experiments. Therefore, CFDLs may play an important role in supplying and accelerating plasma in coronal funnels.

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