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Conference Papers Year : 2019

Generalized Fermi acceleration

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Martin Lemoine

Abstract

This paper introduces a new formalism to describe the acceleration of particles in highly conducting astrophysical plasmas. This method tracks the evolution of particle momenta in a sequence of locally comoving reference frames, where the electric field exactly vanishes. It provides an efficient characterization of acceleration in sub-and ultra-relativistic settings, in Cartesian or non-Cartesian geometries, flat or non-flat spacetime. This paper provides three concrete, original applications: acceleration in a magnetized expanding wind from a compact object, acceleration in the vicinity of a black hole, and acceleration in a relativistic magnetized turbulence.
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Dates and versions

hal-03038211 , version 1 (03-12-2020)

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Martin Lemoine. Generalized Fermi acceleration. High Energy Phenomena in Relativistic Outflows VII (HEPRO VII) Particle acceleration and Radiation processes, Jul 2019, Facultat de Física, Spain. pp.014, ⟨10.22323/1.354.0014⟩. ⟨hal-03038211⟩
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