Generating vorticity and magnetic fields in plasmas in general relativity: Spacetime curvature drive

Using the generally covariant magnetofluid formalism for a hot plasma, a spacetime curvature driven mechanism for generating seed vorticity/magnetic field is presented. The “battery” owes its origin to the interaction between the gravity modified Lorentz factor of the fluid element and the inhomogen...

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Veröffentlicht in:Physics of plasmas 2013-02, Vol.20 (2)
Hauptverfasser: Asenjo, Felipe A., Mahajan, Swadesh M., Qadir, Asghar
Format: Artikel
Sprache:eng
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Zusammenfassung:Using the generally covariant magnetofluid formalism for a hot plasma, a spacetime curvature driven mechanism for generating seed vorticity/magnetic field is presented. The “battery” owes its origin to the interaction between the gravity modified Lorentz factor of the fluid element and the inhomogeneous plasma thermodynamics. The general relativistic drive is evaluated for two simple cases: seed formation in a simplified model of a hot plasma accreting in stable orbits around a Schwarzschild black hole and for particles in free fall near the horizon. Some astrophysical applications are suggested.
ISSN:1070-664X
1089-7674
DOI:10.1063/1.4792257