2024/11/29 by Zhong-Ying Fan, Fan Zhou, Fan, Zhong-Ying +7 · 6 citations
Biochemistry, Genetics and Molecular Biology · Engineering · Materials Science · #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #High Energy Astrophysical Phenomena (astro-ph.HE) #Magnetic Bearings and Levitation Dynamics #Magnetic Properties of Alloys #Magnetic and Electromagnetic Effects
paper · pdf · doi:10.48550/arxiv.2411.19491
openalex publication_date 2024/11/29 · openalex created_date 2024/12/05 · openalex updated_date 2026/07/28
We examine the physical implications of the centrifugal and gravitational electromotive forces on magnetic reconnection in a Kerr black hole background. We find that both forces increase the reconnection rate, though the underlying mechanisms differ substantially. The gravitational force leads to a separation of charge density, breaking the quasi-neutrality of the plasma. In contrast, the centrifugal electromotive force affects the electric current by reducing the effective length of the current sheet. This reduction arises from the non-Euclidean spatial geometry observed by a locally comoving observer with respect to the rotating sheet. This phenomenon amplifies both the transport of charged carriers and the thermal-inertia effect within the current sheet, irrespective of the presence of a black hole.