J
José Natário
Researcher at Instituto Superior Técnico
Publications - 122
Citations - 2183
José Natário is an academic researcher from Instituto Superior Técnico. The author has contributed to research in topics: General relativity & Spacetime. The author has an hindex of 23, co-authored 119 publications receiving 1945 citations. Previous affiliations of José Natário include Technical University of Lisbon & University of Lisbon.
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On the classification of asymptotic quasinormal frequencies for $d$-dimensional black holes and quantum gravity
José Natário,Ricardo Schiappa +1 more
TL;DR: In this article, a complete classification of asymptotic quasinormal frequencies for static, spherically symmetric black hole spacetimes in d dimensions is provided, including all possible types of gravitational perturbations (tensor, vector and scalar type) as described by the Ishibashi-Kodama master equations.
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On the Classification of Asymptotic Quasinormal Frequencies for d-Dimensional Black Holes and Quantum Gravity
José Natário,Ricardo Schiappa +1 more
TL;DR: In this article, a complete classification of asymptotic quasinormal frequencies for static, spherically symmetric black hole spacetimes in d dimensions is provided, including all possible types of gravitational perturbations (tensor, vector and scalar type) as described by the Ishibashi-Kodama master equations.
Journal ArticleDOI
Greybody Factors for d-Dimensional Black Holes
TL;DR: In this article, the greybody factor for black holes with charge and in the presence of a cosmological constant was analyzed for both asymptotically de Sitter and anti-de Sitter spacetimes.
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Asymptotic quasinormal frequencies for black holes in nonasymptotically flat space¿times
TL;DR: In this paper, the exact computation of asymptotic quasinormal frequencies is a technical problem which involves the analytic continuation of a Schrodinger-type equation to the complex plane and then performing a method of monodromy matching at several poles in the plane.
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Test fields cannot destroy extremal black holes
TL;DR: In this paper, it was shown that test fields satisfying the null energy condition at the event horizon cannot overspin/overcharge extremal Kerr-Newman or Kerr−Newman−anti de Sitter black holes.