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Reference Frames and the Physical Gravito-Electromagnetic Analogy
L. Filipe O. Costa, Carlos A. R. Herdeiro
The similarities between linearized gravity and electromagnetism are known since the early days of General Relativity. Using an exact approach based on tidal tensors, we show that…
On the Bekenstein-Hawking area law for black objects with conical singularities
Carlos Herdeiro, Burkhard Kleihaus, Jutta Kunz +1
We argue that, when working with the appropriate set of thermodynamical variables, the Bekenstein-Hawking law still holds for asymptotically flat black objects with conical singula…
Relativistic Euler's 3-body problem, optical geometry and the golden ratio
Flavio S. Coelho, Carlos A. R. Herdeiro
A Weyl solution describing two Schwarzschild black holes is considered. We focus on the Z_2 invariant solution, with ADM mass M_{ADM}=2M_K, where M_K is the Komar mass of each blac…
On the backreaction of frame dragging
Carlos A. R. Herdeiro, Carmen Rebelo, Claude M. Warnick
The backreaction on black holes due to dragging heavy, rather than test, objects is discussed. As a case study, a regular black Saturn system where the central black hole has vanis…
Global embedding of the Kerr black hole event horizon into hyperbolic 3-space
G. W. Gibbons, C. A. R. Herdeiro, C. Rebelo
An explicit global and unique isometric embedding into hyperbolic 3-space, H^3, of an axi-symmetric 2-surface with Gaussian curvature bounded below is given. In particular, this al…
Gauduchon-Tod structures, Sim holonomy and De Sitter supergravity
Jai Grover, Jan B. Gutowski, Carlos A. R. Herdeiro +3
Solutions of five-dimensional De Sitter supergravity admitting Killing spinors are considered, using spinorial geometry techniques. It is shown that the "null" solutions are define…