Open AccessNonlocal Ohms Law, Plasma Resistivity, and Reconnection During Collisions of Magnetic Flux Ropes
Author(s) -
Walter Gekelman,
T. DeHaas,
Patrick Pribyl,
S. Vincena,
B. Van Compernolle,
R. D. Sydora,
S. K. P. Tripathi
Publication year - 2018
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 - 10.3847/1538-4357/aa9fec
Subject(s) - physics , electrical resistivity and conductivity , magnetic reconnection , ohm's law , ohm , flux (metallurgy) , plasma , magnetic flux , magnetohydrodynamics , magnetic field , condensed matter physics , computational physics , nuclear physics , quantum mechanics , metallurgy , materials science
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.
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