WebMar 8, 2024 · In this framework, topology of Lovelock AdS black holes with spherical horizon geometry is explored. Results show that charged black holes in arbitrary dimensions can be classified into the same topology class, whereas the d= 7 and d≥ 8 uncharged black holes are in different topology classes. WebA basic result in the theory of black holes is Hawking’s theorem on the topology of black holes. The theorem asserts that cross sections of the event horizon, in 4-dimensional asymptotically flat stationary black hole space-times, obeying the dominant energy condition, are spherical (i.e., topologically S2). The proof is a

[2304.05695] Thermodynamic topology of 4D Dyonic AdS black holes …

A black hole is a region of spacetime where gravity is so strong that nothing, including light or other electromagnetic waves, has enough energy to escape its event horizon. The theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole. The boundary of … See more The idea of a body so big that even light could not escape was briefly proposed by English astronomical pioneer and clergyman John Michell in a letter published in November 1784. Michell's simplistic calculations … See more Given the bizarre character of black holes, it was long questioned whether such objects could actually exist in nature or whether they were … See more The evidence for stellar black holes strongly relies on the existence of an upper limit for the mass of a neutron star. The size of this limit heavily depends on the assumptions … See more • Binary black hole • Black brane or Black string • Black Hole Initiative • Black hole starship • Black holes in fiction See more The no-hair theorem postulates that, once it achieves a stable condition after formation, a black hole has only three independent physical properties: mass, electric charge, and angular momentum; the black hole is otherwise featureless. If the conjecture is … See more By nature, black holes do not themselves emit any electromagnetic radiation other than the hypothetical Hawking radiation, so astrophysicists searching for black holes must generally rely … See more Entropy and thermodynamics In 1971, Hawking showed under general conditions that the total area of the event horizons of any collection of classical black holes can … See more WebJan 19, 2011 · Hawking's Theorem of Black Hole topology asserts that the in case of $4$d asymptotically flat stationary black holes satisfying the suitable energy condition … pipettes frontline chat

[PDF] Thermodynamic topology of 4D Dyonic AdS black holes in …

WebMar 3, 2024 · Additional resources. The event horizon is the spherical outer boundary of a black hole loosely considered to be its "surface." It is the point, according to NASA, that the gravitational influence ... WebMay 3, 2024 · These give the first promising study on the topology of black hole thermodynamics. Such approach is also expected to be extended to other black holes, … WebAug 7, 2024 · A physically reasonable spacetime that describes a black hole formed by the gravitational collapse of an ordinary object has topology ##R^4##. These manifolds are for the entire spacetime. As above, I don't know what you mean by "cross section". pipette shortage