Energy extraction from non-coalescing black hole binaries

Autor:	Lucas Timotheo Sanches, Maurício Richartz
Rok vydání:	2021
Předmět:	General Relativity and Quantum Cosmology
Zdroj:	Physical Review D. 104
ISSN:	2470-0029 2470-0010
DOI:	10.1103/physrevd.104.124025
Popis:	We define and sketch the generalized ergosphere of the Majumdar-Papapetrou (MP) spacetime. In particular, we demonstrate the existence of closed orbits of negative energy that live outside the event horizon of such a spacetime. Relying on the Penrose process mechanism, we use these orbits to illustrate the possibility of energy extraction from a MP binary black hole by particle scattering. We also analyze the efficiency of the process, and construct explicit examples that optimize the extraction of energy. Lastly, we show how such concepts can be extended to a pair of non-coalescing Kerr black holes described by the Cabrera-Munguia, Manko and Ruiz (CMMR) metric. Comment: 14 pages, 14 figures. Accepted for publication in Phys. Rev. D. In this version, a new section was added to demonstrate how the concepts discussed can be extended to Kerr black hole binaries
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6d7c3be61d8cede13ad8fc9a2ef44d7b https://doi.org/10.1103/physrevd.104.124025 Zobrazit plný text záznamu