Collisionless magnetic reconnection in curved spacetime and the effect of black hole rotation
Magnetic reconnection in curved spacetime is studied by adopting a general-relativistic magnetohydrodynamic model that retains collisionless effects for both electron-ion and pair plasmas. A simple generalization of the standard Sweet-Parker model allows us to obtain the first-order effects of the g...
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| Veröffentlicht in: | Physical review. D 2018-02, Vol.97 (4), Article 043007 |
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| container_title | Physical review. D |
| container_volume | 97 |
| creator | Comisso, Luca Asenjo, Felipe A. |
| description | Magnetic reconnection in curved spacetime is studied by adopting a general-relativistic magnetohydrodynamic model that retains collisionless effects for both electron-ion and pair plasmas. A simple generalization of the standard Sweet-Parker model allows us to obtain the first-order effects of the gravitational field of a rotating black hole. It is shown that the black hole rotation acts to increase the length of azimuthal reconnection layers, thus leading to a decrease of the reconnection rate. However, when coupled to collisionless thermal-inertial effects, the net reconnection rate is enhanced with respect to what would happen in a purely collisional plasma due to a broadening of the reconnection layer. These findings identify an underlying interaction between gravity and collisionless magnetic reconnection in the vicinity of compact objects. |
| doi_str_mv | 10.1103/PhysRevD.97.043007 |
| format | Article |
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| ispartof | Physical review. D, 2018-02, Vol.97 (4), Article 043007 |
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| source | American Physical Society Journals |
| subjects | 70 PLASMA PHYSICS AND FUSION TECHNOLOGY accretion disk & black-hole plasma Black holes classical black holes Collisional plasmas Computational fluid dynamics Fluid flow general relativity Gravitational effects Gravitational fields magnetic reconnection Magnetohydrodynamics PHYSICS OF ELEMENTARY PARTICLES AND FIELDS plasma physics Relativity Rotation Spacetime |
| title | Collisionless magnetic reconnection in curved spacetime and the effect of black hole rotation |
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