Wormholes versus black holes: quasinormal ringing at early and late times

By R. Konoplya, A. Zhidenko. 2016

134 citations recorded by the source corpus.

Recently it has been argued that the phantom thin-shell wormholes matched with the Schwarzschild space-time near the Schwarzschild radius ring like Schwarzschild black holes at early times, but differently at late times [1]. Here we consider perturbations of the wormhole which was constructed without thin-shells: the Bronnikov-Ellis wormhole supported by the phantom matter and electromagnetic field. This wormhole solution is known to be stable under specific equation of state of the phantom matter. We show that if one does not use the above thin-shell matching, the wormhole, depending on the values of its parameters, either rings as the black hole at all times or rings differently also at all times. The wormhole's spectrum, investigated here, posses a number of distinctive features. In the final part we have considered general properties of scattering around arbitrary rotating traversable wormholes. We have found that symmetric and non-symmetric (with respect to the throat) wormholes are qualitatively different in this respect: first, superradiance is allowed only if for those non-symmetric wormholes for which the asymptotic values of the rotation parameters are different on both sides from the throat. Second, the symmetric wormholes cannot mimic effectively the ringing of a black hole at a few various dominant multipoles at the same time, so that the future observations of various events should easily tell the symmetric wormhole from a black hole.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/c3300c8dd46d0996425ba7362f570f21645125f1

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

1. Paolo Pani
2. V. Cardoso
3. R. Lobato
4. P. Moraes
5. Raul Corrêa
6. R. Brito
7. Kent Yagi
8. Jorge E Santos

In Nuclear and High Energy Physics

1. Paolo Pani
2. V. Cardoso
3. R. Lobato
4. P. Moraes
5. Raul Corrêa
6. R. Brito
7. Jorge E Santos
8. Gavin Hartnett

Citations in the corpus

• Analytical general solutions for static wormholes in f(R,T) gravity (2016, background): “Zhidenko have shown that a WH may ring like a black hole at all times [31].”
• Tests for the existence of black holes through gravitational wave echoes (2017, background): “8, 084016 1-6 (2016) [67] Konoplya, RA and Zhidenko, A, Wormholes versus black holes: quasinormal ringing at early and late times.”