Generalized Ohm's law for a background plasma in the presence of relativistic charged particles.
A generalized Ohm's law is derived for a system composed of a background magnetohydrodynamic plasma and a lower density relativistic charged-particle distribution. The interpretation of Ohmic electric fields occurring due to force balance breaks down for such a system and instead an approach based on Maxwell's equations along with the particle flux equations is necessary. Three additional terms arise in Ohm's law and each is verified numerically.
Sherlock
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Blackett Laboratory, Imperial College, London SW7 2BZ, United Kingdom.