Moving black holes: Energy extraction, absorption cross section, and the ring of fire
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Moving black holes : Energy extraction, absorption cross section, and the ring of fire. / Cardoso, Vitor; Vicente, Rodrigo.
I: Physical Review D, Bind 100, Nr. 8, 084001, 01.10.2019.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Moving black holes
T2 - Energy extraction, absorption cross section, and the ring of fire
AU - Cardoso, Vitor
AU - Vicente, Rodrigo
PY - 2019/10/1
Y1 - 2019/10/1
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).
KW - SCALAR WAVES
KW - SCATTERING
U2 - 10.1103/PhysRevD.100.084001
DO - 10.1103/PhysRevD.100.084001
M3 - Journal article
VL - 100
JO - Physical Review D
JF - Physical Review D
SN - 2470-0010
IS - 8
M1 - 084001
ER -
ID: 298639872