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We show that in the conformally flat case the Penrose inequality is satisfied for the Schwarzschild initial data with a small addition of the axially symmetric traceless exterior curvature. In this class the inequality is saturated only for…

General Relativity and Quantum Cosmology · Physics 2019-12-09 Jarosław Kopiński , Jacek Tafel

We demonstrate that the Penrose inequality is valid for spherically symmetric geometries even when the horizon is immersed in matter. The matter field need not be at rest. The only restriction is that the source satisfies the weak energy…

General Relativity and Quantum Cosmology · Physics 2009-10-22 Edward Malec , Niall Ó Murchadha

We prove the equality case of the Penrose inequality in all dimensions for asymptotically flat hypersurfaces. It was recently proven by G. Lam that the Penrose inequality holds for asymptotically flat graphical hypersurfaces in Euclidean…

Differential Geometry · Mathematics 2013-05-03 Lan-Hsuan Huang , Damin Wu

We prove a version the Penrose inequality for black hole space-times which are perturbations of the Schwarzschild exterior in a slab around a null hypersurface $\underline{\mathcal{N}}_0$. $\underline{\mathcal{N}}_0$ terminates at past null…

General Relativity and Quantum Cosmology · Physics 2015-06-23 Spyros Alexakis

Our current picture of black hole gravitational collapse relies on two assumptions: i) the resulting singularity is hidden behind an event horizon -- weak cosmic censorship conjecture -- and ii) spacetime eventually settles down to a…

General Relativity and Quantum Cosmology · Physics 2009-11-13 J. L. Jaramillo , N. Vasset , M. Ansorg

We provide a new proof of the Riemannian Penrose inequality for time-symmetric asymptotically flat initial data with a single black-hole horizon. The proof proceeds through a newly established monotonicity formula holding along the level…

Differential Geometry · Mathematics 2025-05-26 Virginia Agostiniani , Carlo Mantegazza , Lorenzo Mazzieri , Francesca Oronzio

Formulation of the Penrose inequality becomes ambiguous when the past and future apparent horizons do cross. We test numerically several natural possibilities of stating the inequality in punctured and boosted single- and double- black…

General Relativity and Quantum Cosmology · Physics 2007-05-23 Janusz Karkowski , Edward Malec

The Penrose inequality has so far been proven in cases of spherical symmetry and in cases of zero extrinsic curvature. The next simplest case worth exploring would be non-spherical, non-rotating black holes with non-zero extrinsic…

General Relativity and Quantum Cosmology · Physics 2009-10-29 Benjamin K. Tippett

The Penrose inequality estimates the lower bound of the mass of a black hole in terms of the area of its horizon. This bound is relatively loose for extremal or near extremal black holes. We propose a new Penrose-like inequality for static…

General Relativity and Quantum Cosmology · Physics 2022-10-21 H. Khodabakhshi , H. Lu , Run-Qiu Yang

Motivated by the rigidity case in the localized Riemannian Penrose inequality, we show that suitable singular metrics attaining the optimal value in the Riemannian Penrose inequality is necessarily smooth in properly specified coordinates.…

Differential Geometry · Mathematics 2020-10-19 Siyuan Lu , Pengzi Miao

The Riemannian Penrose inequality (RPI) bounds from below the ADM mass of asymptotically flat manifolds of nonnegative scalar curvature in terms of the total area of all outermost compact minimal surfaces. The general form of the RPI is…

Differential Geometry · Mathematics 2018-12-10 Jeffrey L. Jauregui

In this note we prove a global rigidity result for asymptotically flat, scalar flat Euclidean hypersurfaces with a minimal horizon lying in a hyperplane, under a natural ellipticity condition. As a consequence we obtain, in the context of…

Differential Geometry · Mathematics 2021-07-30 Levi Lopes de Lima , Frederico Girão

We establish a Penrose-type inequality with angular momenta for four dimensional, biaxially symmetric, maximal, asymptotically flat initial data sets $(M,g,k)$ for the Einstein equations with fixed angular momenta and horizon inner boundary…

General Relativity and Quantum Cosmology · Physics 2023-11-07 Aghil Alaee , Hari K. Kunduri

We summarize results on the Penrose inequality bounding the ADM-mass or the Bondi mass in terms of the area of an outermost apparent horizon for asymptotically flat initial data of Einstein's equations. We first recall the proof, due to…

General Relativity and Quantum Cosmology · Physics 2007-05-23 Edward Malec , Marc Mars , Walter Simon

In axially symmetric spacetimes the Penrose inequality can be strengthened to include angular momentum. We prove a version of this inequality for minimal surfaces, more precisely, a lower bound for the ADM mass in terms of the area of a…

General Relativity and Quantum Cosmology · Physics 2018-01-26 Pablo Anglada

Consider an asymptotically Euclidean initial data set with a smooth marginally trapped surface (possibly a union of future and past multi-connected components) as inner boundary. By a further development of the spinorial framework…

General Relativity and Quantum Cosmology · Physics 2020-09-02 Yun-Kau Lau

We establish a Penrose-Like Inequality for general (not necessarily time symmetric) initial data sets of the Einstein equations which satisfy the dominant energy condition. More precisely, it is shown that the ADM energy is bounded below by…

Differential Geometry · Mathematics 2013-10-14 Marcus A. Khuri

We prove the spacetime Penrose inequality for asymptotically flat $2(n+1)$-dimensional initial data sets for the Einstein equations, which are invariant under a cohomogeneity one action of $\mathrm{SU}(n+1)$. Analogous results are obtained…

Differential Geometry · Mathematics 2024-04-23 Marcus Khuri , Hari Kunduri

We present a proof of the Riemannian Penrose inequality with charge in the context of asymptotically flat initial data sets for the Einstein-Maxwell equations, having possibly multiple black holes with no charged matter outside the horizon,…

General Relativity and Quantum Cosmology · Physics 2017-11-09 Marcus Khuri , Gilbert Weinstein , Sumio Yamada

We establish mass lower bounds of Penrose-type in the setting of $3$-dimensional initial data sets for the Einstein equations satisfying the dominant energy condition, which are either asymptotically flat or asymptotically hyperboloidal.…

Differential Geometry · Mathematics 2025-04-16 Brian Allen , Edward Bryden , Demetre Kazaras , Marcus Khuri
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