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Covariant magnetic connection hypersurfaces

Part of: Premio Vincenzo Ferraro in Space Plasma Frontiers in Plasma Physics Conference

Published online by Cambridge University Press:  30 March 2016

F. Pegoraro
F. Pegoraro*
Affiliation:
Department of Physics, University of Pisa, largo Pontecorvo 3, 56127 Pisa, Italy
*
†Email address for correspondence: francesco.pegoraro@unipi.it
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Abstract

In the single fluid, non-relativistic, ideal magnetohydrodynamic (MHD) plasma description, magnetic field lines play a fundamental role by defining dynamically preserved ‘magnetic connections’ between plasma elements. Here we show how the concept of magnetic connection needs to be generalized in the case of a relativistic MHD description where we require covariance under arbitrary Lorentz transformations. This is performed by defining 2-D magnetic connection hypersurfaces in the 4-D Minkowski space. This generalization accounts for the loss of simultaneity between spatially separated events in different frames and is expected to provide a powerful insight into the 4-D geometry of electromagnetic fields when $\boldsymbol{E}\boldsymbol{\cdot }\boldsymbol{B}=0$.

Type
Research Article
Information
Journal of Plasma Physics , Volume 82 , Issue 2 , April 2016 , 555820201
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Copyright
© Cambridge University Press 2016 

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