Resonances of a rotating black hole analogue
نویسندگان
چکیده
منابع مشابه
A mystery of black-hole gravitational resonances
More than three decades ago, Detweiler provided an analytical formula for the gravitational resonant frequencies of rapidly-rotating Kerr black holes. In the present work we shall discuss an important discrepancy between the famous analytical prediction of Detweiler and the recent numerical results of Zimmerman et al. In addition, we shall refute the claim that recently appeared in the physics ...
متن کاملSpinning Particle, Rotating Black Hole and Twistor-string * Rotating Black Hole as Spinning Particle
Structure of the spinning particle based on the rotating black hole solution is considered. It has gyromagnetic ratio g = 2 and a nontriv-ial twistorial and stringy systems. The mass and spin appear from excitations of the Kerr circular string, while the Dirac equation describes excitations of an axial stringy system which is responsible for scattering. Complex Kerr geometry contains an open tw...
متن کاملThe sonic analogue of black hole radiation
A microscopic description of Hawking radiation in sonic black holes has been recently presented [1]. This exactly solvable model is formulated in terms of onedimensional scattering of a Fermi gas. In this paper, the model is extended to account possible finite size effects of a realistic geometry. The flow of particles is maintained by a piston (i.e. an impenetrable barrier) moving slowly towar...
متن کاملTransonic Black Hole Accretion as Analogue System
Classical black hole analogues (alternatively, the analogue systems) are fluid dynamical analogue of general relativistic black holes. Such analogue effects may be observed when acoustic perturbations (sound waves) propagate through a classical dissipation-less tran-sonic fluid. The acoustic horizon, which resembles the actual black hole event horizon in many ways, may be generated at the trans...
متن کاملBulk Emission of Scalars by a Rotating Black Hole
We study in detail the scalar-field Hawking radiation emitted into the bulk by a higher-dimensional, rotating black hole. We numerically compute the angular eigenvalues, and solve the radial equation of motion in order to find transmission factors. The latter are found to be enhanced by the angular momentum of the black hole, and to exhibit the well-known effect of superradiance. The correspond...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review D
سال: 2012
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.85.044031