Moving black holes: Energy extraction, absorption cross section, and the ring of fire

Vitor Cardoso; Rodrigo Vicente

doi:10.1103/PhysRevD.100.084001

Moving black holes: Energy extraction, absorption cross section, and the ring of fire

Vitor Cardoso^*, Rodrigo Vicente

^*Corresponding author af dette arbejde

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › peer review

16 Citationer (Scopus)

3 Downloads (Pure)

Abstract

We consider the interaction between a plane wave and a (countermoving) black hole. We show that energy is transferred from the black hole to the wave, giving rise to a negative absorption cross section. Moving black holes absorb radiation and deposit energy in external radiation. Due to this effect, a black hole hole of mass M moving at relativistic speeds in a cold medium will appear to be surrounded by a bright "ring" of diameter 3 root 3 GM/c(2) and thickness similar to GM/c(2).

Originalsprog	Engelsk
Artikelnummer	084001
Tidsskrift	Physical Review D
Vol/bind	100
Udgave nummer	8
Antal sider	6
ISSN	2470-0010
DOI	https://doi.org/10.1103/PhysRevD.100.084001
Status	Udgivet - 1 okt. 2019
Udgivet eksternt	Ja

Adgang til dokumentet

10.1103/PhysRevD.100.084001Licens: CC BY

PhysRevD.100.084001Forlagets udgivne version, 959 KBLicens: CC BY

Citationsformater

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N2 - We consider the interaction between a plane wave and a (countermoving) black hole. We show that energy is transferred from the black hole to the wave, giving rise to a negative absorption cross section. Moving black holes absorb radiation and deposit energy in external radiation. Due to this effect, a black hole hole of mass M moving at relativistic speeds in a cold medium will appear to be surrounded by a bright "ring" of diameter 3 root 3 GM/c(2) and thickness similar to GM/c(2).

AB - We consider the interaction between a plane wave and a (countermoving) black hole. We show that energy is transferred from the black hole to the wave, giving rise to a negative absorption cross section. Moving black holes absorb radiation and deposit energy in external radiation. Due to this effect, a black hole hole of mass M moving at relativistic speeds in a cold medium will appear to be surrounded by a bright "ring" of diameter 3 root 3 GM/c(2) and thickness similar to GM/c(2).

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KW - SCATTERING

U2 - 10.1103/PhysRevD.100.084001

DO - 10.1103/PhysRevD.100.084001

M3 - Journal article

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