http://arxiv.org/abs/1702.04833
The recent detection of gravitational waves has generated interest in alternatives to the black hole interpretation of sources. One set of such alternatives involves a prediction of gravitational wave “echoes”. We consider two aspects of possible echoes: First, general features of echoes coming from spacetime reflecting conditions. We find that the detailed nature of such echoes does not bear any clear relationship to quasi-normal frequencies. Second, we point out the pitfalls in the analysis of local reflecting “walls” near the horizon of rapidly rotating black holes.
R. Price and G. Khanna
Fri, 17 Feb 17
38/43
Comments: 8 pages, 5 figures