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Three dimensional density cavities in guide field collisionless magnetic reconnection
KTH, School of Computer Science and Communication (CSC), Centres, Centre for High Performance Computing, PDC.ORCID iD: 0000-0003-0639-0639
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2012 (English)In: Physics of Plasmas, ISSN 1070-664X, E-ISSN 1089-7674, Vol. 19, no 3, 032119- p.Article in journal (Refereed) Published
Abstract [en]

Particle-in-cell simulations of collisionless magnetic reconnection with a guide field reveal for the first time the three dimensional features of the low density regions along the magnetic reconnection separatrices, the so-called cavities. It is found that structures with further lower density develop within the cavities. Because their appearance is similar to the rib shape, these formations are here called low density ribs. Their location remains approximately fixed in time and their density progressively decreases, as electron currents along the cavities evacuate them. They develop along the magnetic field lines and are supported by a strong perpendicular electric field that oscillates in space. In addition, bipolar parallel electric field structures form as isolated spheres between the cavities and the outflow plasma, along the direction of the low density ribs and of magnetic field lines.

Place, publisher, year, edition, pages
2012. Vol. 19, no 3, 032119- p.
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-95125DOI: 10.1063/1.3697976ISI: 000302226500026Scopus ID: 2-s2.0-84861583044OAI: oai:DiVA.org:kth-95125DiVA: diva2:526773
Funder
EU, European Research Council, 263340
Note
QC 20120515Available from: 2012-05-15 Created: 2012-05-14 Last updated: 2017-12-07Bibliographically approved

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Markidis, Stefano

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