Matches in SemOpenAlex for { <https://semopenalex.org/work/W2805909060> ?p ?o ?g. }
- W2805909060 abstract "Shortly after the discovery of the Kerr metric in 1963, it was realized that a region existed outside of the black hole’s event horizon where no time-like observer could remain stationary. In 1969, Roger Penrose showed that particles within this ergosphere region could possess negative energy, as measured by an observer at infinity. When captured by the horizon, these negative energy particles essentially extract mass and angular momentum from the black hole. While the decay of a single particle within the ergosphere is not a particularly efficient means of energy extraction, the collision of multiple particles can reach arbitrarily high center-of-mass energy in the limit of extremal black hole spin. The resulting particles can escape with high efficiency, potentially serving as a probe of high-energy particle physics as well as general relativity. In this paper, we briefly review the history of the field and highlight a specific astrophysical application of the collisional Penrose process: the potential to enhance annihilation of dark matter particles in the vicinity of a supermassive black hole." @default.
- W2805909060 created "2018-06-13" @default.
- W2805909060 creator A5027575648 @default.
- W2805909060 date "2018-06-01" @default.
- W2805909060 modified "2023-10-17" @default.
- W2805909060 title "The collisional Penrose process" @default.
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- W2805909060 doi "https://doi.org/10.1007/s10714-018-2373-5" @default.
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