A higher-dimensional generalization of the geodesic part of the Goldberg-Sachs theorem (2009)
Durkee, Mark, Reall, Harvey S.
In more than four spacetime dimensions, a multiple Weyl-aligned null direction (WAND) need not be geodesic. It is proved that any higher-dimensional Einstein spacetime admitting a non-geodesic...
Kerr-CFT and gravitational perturbations (2009)
Dias, Oscar J. C., Reall, Harvey S., Santos, Jorge E.
Motivated by the Kerr-CFT conjecture, we investigate perturbations of the near-horizon extreme Kerr spacetime. The Teukolsky equation for a massless field of arbitrary spin is solved. Solutions fall...
Godazgar, Mahdi, Reall, Harvey S.
A d-dimensional spacetime is "axisymmetric" if it possesses an SO(d-2) isometry group whose orbits are (d-3)-spheres. In this paper, algebraically special, axisymmetric solutions of the higher...
Charged Randall-Sundrum black holes and N=4 super Yang-Mills in AdS(2)xS(2) (2009)
Kaus, Alexander, Reall, Harvey S.
We obtain some exact results for black holes in the Randall-Sundrum model with a single brane. We consider an extreme black hole charged with respect to a Maxwell field on the brane. The near-horizon...
Martin, Jonathan E., Reall, Harvey S.
Eleven-dimensional supergravity admits non-supersymmetric solutions of the form AdS(5)xM(6) where M(6) is a positive Kahler-Einstein space. We show that the necessary and sufficient condition for...
Black Holes in Higher Dimensions (2008)
Roberto Emparan, Harvey S. Reall
We review black-hole solutions of higher-dimensional vacuum gravity and higher-dimensional supergravity theories. The discussion of vacuum gravity is pedagogical, with detailed reviews of...
Local Fluid Dynamical Entropy from Gravity (2008)
Bhattacharyya, Sayantani, Hubeny, Veronika E, Loganayagam, R., Mandal, Gautam, Minwalla, Shiraz, Morita, Takeshi, ...
Spacetime geometries dual to arbitrary fluid flows in strongly coupled N=4 super Yang Mills theory have recently been constructed perturbatively in the long wavelength limit. We demonstrate that...
Black Holes in Higher Dimensions (2008)
Emparan, Roberto, Reall, Harvey S.
We review black hole solutions of higher-dimensional vacuum gravity, and of higher-dimensional supergravity theories. The discussion of vacuum gravity is pedagogical, with detailed reviews of...
Counting the microstates of a vacuum black ring (2007)
The Bekenstein-Hawking entropy of an extremal vacuum black ring is derived from a microscopic counting of states. The entropy of extremal Kaluza-Klein black holes with ergospheres is also derived.
Candlish, Graeme N., Reall, Harvey S.
Previous work has shown that static multi-black hole solutions of higher-dimensional Einstein-Maxwell theory do not possess smooth horizons. We show that the lack of smoothness is worse than...
Near-horizon symmetries of extremal black holes (2007)
Kunduri, Hari K., Lucietti, James, Reall, Harvey S.
Recent work has demonstrated an attractor mechanism for extremal rotating black holes subject to the assumption of a near-horizon SO(2,1) symmetry. We prove the existence of this symmetry for any...
Do supersymmetric anti-de Sitter black rings exist? (2006)
Kunduri, Hari K., Lucietti, James, Reall, Harvey S.
We determine the most general near-horizon geometry of a supersymmetric, asymptotically anti-de Sitter, black hole solution of five-dimensional minimal gauged supergravity that admits two rotational...
Emparan, Roberto, Reall, Harvey S.
A black ring is a five-dimensional black hole with an event horizon of topology S1 x S2. We provide an introduction to the description of black rings in general relativity and string theory. Novel...
Gravitational Perturbations of Higher Dimensional Rotating Black Holes: Tensor Perturbations (2006)
Kunduri, Hari K., Lucietti, James, Reall, Harvey S.
Assessing the stability of higher-dimensional rotating black holes requires a study of linearized gravitational perturbations around such backgrounds. We study perturbations of Myers-Perry black...
Supersymmetric multi-charge AdS_5 black holes (2006)
Kunduri, Hari K., Lucietti, James, Reall, Harvey S.
A new supersymmetric, asymptotically anti-de Sitter, black hole solution of five-dimensional U(1)^3 gauged supergravity is presented. All known examples of such black holes arise as special cases of...
On non-existence of static vacuum black holes with degenerate components of the event horizon (2005)
Chrusciel, Piotr T., Reall, Harvey S., Tod, Paul
We present a simple proof of the non-existence of degenerate components of the event horizon in static, vacuum, regular, four-dimensional black hole spacetimes. We discuss the generalisation to...
Supersymmetric 4D Rotating Black Holes from 5D Black Rings (2005)
Elvang, Henriette, Emparan, Roberto, Mateos, David, Reall, Harvey S.
We present supersymmetric solutions describing black holes with non-vanishing angular momentum in four dimensional asymptotically flat space. The solutions are obtained by Kaluza-Klein reduction of...
How hairy can a black ring be? (2004)
Horowitz, Gary T., Reall, Harvey S.
It has been shown recently that there is a large class of supersymmetric solutions of five-dimensional supergravity which generalize the supersymmetric black ring solution of Elvang et al. This class...
Supersymmetric black rings and three-charge supertubes (2004)
Elvang, Henriette, Emparan, Roberto, Mateos, David, Reall, Harvey S.
We present supergravity solutions for 1/8-supersymmetric black supertubes with three charges and three dipoles. Their reduction to five dimensions yields supersymmetric black rings with regular...
A supersymmetric black ring (2004)
Elvang, Henriette, Emparan, Roberto, Mateos, David, Reall, Harvey S.
A new supersymmetric black hole solution of five-dimensional supergravity is presented. It has an event horizon of topology S1xS2. This is the first example of a supersymmetric, asymptotically flat...
General supersymmetric AdS5 black holes (2004)
Gutowski, Jan B., Reall, Harvey S.
Supersymmetric, asymptotically AdS5, black hole solutions of five dimensional gauged supergravity coupled to arbitrarily many abelian vector multiplets are presented. The general nature of...
Supersymmetric AdS5 black holes (2004)
Gutowski, Jan B., Reall, Harvey S.
The first examples of supersymmetric, asymptotically AdS5, black hole solutions are presented. They form a 1-parameter family of solutions of minimal five-dimensional gauged supergravity. Their...
All supersymmetric solutions of minimal supergravity in six dimensions (2003)
Gutowski, Jan B., Martelli, Dario, Reall, Harvey S.
A general form for all supersymmetric solutions of minimal supergravity in six dimensions is obtained. Examples of new supersymmetric solutions are presented. It is proven that the only maximally...
Higher dimensional black holes and supersymmetry (2002)
It has recently been shown that the uniqueness theorem for stationary black holes cannot be extended to five dimensions. However, uniqueness is an important assumption of the string theory black hole...
All supersymmetric solutions of minimal supergravity in five dimensions (2002)
Gauntlett, Jerome P., Gutowski, Jan B., Hull, Christopher M., Pakis, Stathis, Reall, Harvey S.
All purely bosonic supersymmetric solutions of minimal supergravity in five dimensions are classified. The solutions preserve either one half or all of the supersymmetry. Explicit examples of new...
Generalized Weyl Solutions (2001)
Emparan, Roberto, Reall, Harvey S.
It was shown by Weyl that the general static axisymmetric solution of the vacuum Einstein equations in four dimensions is given in terms of a single axisymmetric solution of the Laplace equation in...
A rotating black ring in five dimensions (2001)
Emparan, Roberto, Reall, Harvey S.
The vacuum Einstein equations in five dimensions are shown to admit a solution describing an asymptotically flat spacetime regular on and outside an event horizon of topology S^1 x S^2. It describes...
Classical and Thermodynamic Stability of Black Branes (2001)
It is argued that many non-extremal black branes exhibit a classical Gregory-Laflamme instability if, and only if, they are locally thermodynamically unstable. For some black branes, the...
Charged Brane-World Black Holes (2001)
Chamblin,Andrew, Reall,Harvey S., Shinkai,Hisa-aki, Shiromizu,Tetsuya
We study charged brane-world black holes in the model of Randall and Sundrum in which our universe is viewed as a domain wall in asymptotically anti-de Sitter space. Such black holes can carry two...
Charged Brane-World Black Holes (2001)
Chamblin, Andrew, Reall, Harvey S., Shinkai, Hisa-aki, Shiromizu, Tetsuya
We study charged brane-world black holes in the model of Randall and Sundrum in which our universe is viewed as a domain wall in asymptotically anti-de Sitter space. Such black holes can carry two...
Charged Brane-World Black Holes (2000)
Chamblin, Andrew, Reall, Harvey S., Shinkai, Hisa-aki, Shiromizu, Tetsuya
We study charged brane-world black holes in the model of Randall and Sundrum in which our universe is viewed as a domain wall in asymptotically anti-de Sitter space. Such black holes can carry two...
Open and Closed Cosmological Solutions of Horava-Witten Theory (1998)
The cosmological solutions of Horava-Witten theory discovered by Lukas, Ovrut and Waldram are generalized to allow non vanishing spatial curvature. The solution with closed spatial sections has...
Inflation, Singular Instantons and Eleven Dimensional Cosmology (1998)
Hawking, S. W., Reall, Harvey S.
We investigate cosmological solutions of eleven dimensional supergravity compactified on a squashed seven manifold. The effective action for the four dimensional theory contains scalar fields...