Nonlinear effects in the black hole ringdown: Absorption-induced mode excitation
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review D"
DOI: 10.1103/physrevd.105.064046
Abstract: Gravitational-wave observations of black hole ringdowns are commonly used to characterize binary merger remnants and to test general relativity. These analyses assume linear black hole perturbation theory, in particular that the ringdown can be described… read more here.
Keywords: absorption induced; induced mode; mode excitation; black hole ... See more keywords
Angle-selective chiral absorption induced by diffractive coupling in metasurfaces.
Sign Up to like & getrecommendations! Published in 2022 at "Optics letters"
DOI: 10.1364/ol.472717
Abstract: Here we report that a simple chiral metasurface with twisted metallic cut-wire arrays enables highly efficient and continuously tunable chiral absorption over a broad spectral range by scanning the incidence angle over a few degrees.… read more here.
Keywords: absorption induced; chiral absorption; selective chiral; induced diffractive ... See more keywords