Black hole shadows and invariant phase space structures
نویسندگان
چکیده
منابع مشابه
Black hole size and phase space volumes
For extremal black holes the fuzzball conjecture says that the throat of the geometry ends in a quantum ‘fuzz’, instead of being infinite in length with a horizon at the end. For the D1-D5 system we consider a family of sub-ensembles of states, and find that in each case the boundary area of the fuzzball satisfies a Bekenstein type relation with the entropy enclosed. We suggest a relation betwe...
متن کاملStatic Isolated Horizons: SU(2) Invariant Phase Space, Quantization, and Black Hole Entropy
We study the classical field theoretical formulation of static generic isolated horizons in a manifestly SU(2) invariant formulation. We show that the usual classical description requires revision in the non-static case due to the breaking of diffeomorphism invariance at the horizon leading to the non-conservation of the usual pre-symplectic structure. We argue how this difficulty could be avoi...
متن کاملBlack Hole Shadows of Charged Spinning Black Holes
We propose a method for measuring the black hole charge by imaging a black hole shadow in a galactic center by future interferometers. Even when the black hole is uncharged, it is possible to confirm the charge neutrality by this method. We first derive the analytic formulae of the black hole shadow in an optically thin medium around a charged spinning black hole, and then investigate how conto...
متن کاملPhase Space Analysis on some Black Hole Manifolds
The Schwarzschild and Reissner-Nordstrøm soutions to Einstein’s equations describe space-times which contain spherically symmetric black holes. We consider solutions to the liear wave equation in the exterior of a fixed blackhole spacetime of this type. We show that for solutions with initial data which decay at infinite, a weighted L norm in space decays like t− 1 3 . This weight vanishes at t...
متن کاملBlack hole entropy as T - duality invariant
We study the Euler numbers and the entropies of the non-extremal intersecting D-branes in ten-dimensions. We use the surface gravity to constrain the compactification radii. We correctly obtain the integer valued Euler numbers for these radii. Moreover, the entropies are found to be invariant under the T-duality transformation. In the extremal limit, we obtain the finite entropies only for two ...
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: 2017
ISSN: 2470-0010,2470-0029
DOI: 10.1103/physrevd.96.024045