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Kinetic equilibria of relativistic collisionless plasmas in the presence of non-stationary electromagnetic fields
- Publication Year :
- 2023
- Publisher :
- arXiv, 2023.
-
Abstract
- The kinetic description of relativistic plasmas in the presence of time-varying and spatially non-uniform electromagnetic fields is a fundamental theoretical issue both in astrophysics and plasma physics. This refers, in particular, to the treatment of collisionless and strongly-magnetized plasmas in the presence of intense radiation sources. In this paper the problem is investigated in the framework of a covariant gyrokinetic treatment for Vlasov-Maxwell equilibria. The existence of a new class of kinetic equilibria is pointed out, which occur for spatially-symmetric systems. These equilibria are shown to exist in the presence of non-uniform background EM fields and curved space-time. In the non-relativistic limit this feature permits the determination of kinetic equilibria even for plasmas in which particle energy is not conserved due to the occurrence of explicitly time-dependent EM fields. Finally, absolute stability criteria are established which apply in the case of infinitesimal symmetric perturbations that can be either externally or internally produced.<br />Comment: 8 pages
- Subjects :
- Electromagnetic field
Physics
High Energy Astrophysical Phenomena (astro-ph.HE)
Statistical Mechanics (cond-mat.stat-mech)
Infinitesimal
Vlasov equation
FOS: Physical sciences
Plasma
Condensed Matter Physics
Kinetic energy
Physics - Plasma Physics
Plasma Physics (physics.plasm-ph)
symbols.namesake
Classical mechanics
Maxwell's equations
Physics::Plasma Physics
symbols
Covariant transformation
Limit (mathematics)
Astrophysics - High Energy Astrophysical Phenomena
Condensed Matter - Statistical Mechanics
Subjects
Details
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....3a20ba964653b0f61808ca5b0907d0e3
- Full Text :
- https://doi.org/10.48550/arxiv.2306.10435