Could gravitational wave echoes be a sign of new physics beyond general relativity?

Sep 23, 2010 ... There is a nice trick which can then be played: If the local energy density exceeds a certain limit, a black hole will form causing an event ... More information about the award is available here. ... The image is of gas surrounding a black hole of nearly six billion solar masses in the galaxy M87. The information paradox first surfaced in the early 1970s when Stephen Hawking of Cambridge University suggested that black holes are not totally black. Feb 21, 2018 ... What is the difference between a chrysalis and a cocoon? How do you differentiate good chrysalides from bad ones? Read for more information. An Informational Message About the Black Hole Raises Concerns and Excitment in the Helldivers 2 Community : Recent work on the black hole information paradox suggests that information (in line with the quantum mechanical understanding of it) cannot be lost from the ... Bekenstein realized that unless S = O(ER) for arbitrary states and regions, we could throw extra stuff into the region, making a black hole with lower entropy ... Sep 29, 2013 ... Don't count on finding big misconceptions here: in fact, questions about black hole entropy and the Beckenstein bound are some of the most ... In the deep black hole interior, however, the strong interactions between gravity and quantum physics require a quantum theory of gravity. Fortunately, though, ... Sep 13, 2023 ... 37 votes, 24 comments. 28M subscribers in the space community. Share & discuss informative content on: * Astrophysics * Cosmology * Space ...