Nonlocal Ohms Law, Plasma Resistivity, and Reconnection During Collisions of Magnetic Flux Ropes

The plasma resistivity was evaluated in an experiment on the collision of two magnetic flux ropes. Whenever the ropes collide, some magnetic energy is lost as a result of reconnection. Volumetric data, in which all the relevant time-varying quantities were recorded in detail, are presented. Ohm'...

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Published inThe Astrophysical journal Vol. 853; no. 1; pp. 33 - 49
Main Authors Gekelman, W., DeHaas, T., Pribyl, P., Vincena, S., Compernolle, B. Van, Sydora, R., Tripathi, S. K. P.
Format Journal Article
LanguageEnglish
Published Philadelphia The American Astronomical Society 20.01.2018
IOP Publishing
Institute of Physics (IOP)
Subjects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ASTRONOMY AND ASTROPHYSICS
Astrophysics
Electrical resistivity
magnetic fields
Magnetic flux
magnetic reconnection
magnetohydrodynamics (MHD)
Ohm's Law
plasmas
Sun: magnetic fields
turbulence
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Summary:The plasma resistivity was evaluated in an experiment on the collision of two magnetic flux ropes. Whenever the ropes collide, some magnetic energy is lost as a result of reconnection. Volumetric data, in which all the relevant time-varying quantities were recorded in detail, are presented. Ohm's law is shown to be nonlocal and cannot be used to evaluate the plasma resistivity. The resistivity was instead calculated using the AC Kubo resistivity and shown to be anomalously high in certain regions of space.
Bibliography:AAS07384
The Sun and the Heliosphere
FC02-07ER54918
National Science Foundation (NSF)
USDOE Office of Science (SC), Fusion Energy Sciences (FES)
ISSN:0004-637X
1538-4357
1538-4357
DOI:10.3847/1538-4357/aa9fec