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A&A 508, 433443 (2009) DOI: 10.1051/0004-6361/200912664
 

Summary: A&A 508, 433­443 (2009)
DOI: 10.1051/0004-6361/200912664
c ESO 2009
Astronomy
&
Astrophysics
How skeletons turn into quasi-separatrix layers in source models
A. L. Restante1,2, G. Aulanier1, and C. E. Parnell2
1
LESIA, Observatoire de Paris, CNRS, UPMC, Université Paris Diderot, 5 place Jules Janssen, 92190 Meudon, France
e-mail: annalisa.restante@obspm.fr
2
School of Mathematics and Statistics, University of St. Andrews, St. Andrews, Fife KY16 9SS, Scotland, UK
Received 9 June 2009 / Accepted 17 September 2009
ABSTRACT
Context. In situations where there are no magnetic null points located above a reference photospheric plane, and when the photospheric
magnetic field is modeled by discrete flux concentrations, the magnetic connectivity is defined by the magnetic skeleton of the
configuration. For a continuous distribution of non-zero photospheric flux, the connectivity is defined by quasi-separatrix layers
(QSLs). Both the magnetic skeleton and QSLs can account for current sheet formation and dissipation. Observationally, though, only
some portions of the skeleton are found to be related to flare ribbons, which are generally associated with QSL footpoints.

  

Source: Aulanier, Guillaume - Observatoire de Paris
Parnell, Clare E. - School of Mathematics and Statistics, University of St Andrews

 

Collections: Physics