2019/11/30 by M. S. Churilova, M S Churilova, Z. Stuchlik +1 · 4 citations
Physics and Astronomy · #Astrophysical Phenomena and Observations #Black Holes and Theoretical Physics #Black hole (networking) #Eikonal equation #Perturbation (astronomy) #Perturbation theory (quantum mechanics) #Pulsars and Gravitational Waves Research #Quasinormal mode #Schwarzschild metric #Schwarzschild radius #Spacetime #WKB approximation #Wormhole #astro-ph.HE #gr-qc #hep-th
paper · pdf · doi:10.1088/1361-6382/ab7717
published as Class. Quantum Grav.37(2020) 075014 · 8 pages, 4 figures, revtex, the version accepted for publication in Classical and Quantum Gravity, references added
openalex created_date 2019/12/05 · openalex publication_date 2020/02/17 · arxiv created 2020/02/26 · arxiv updated 2020/03/09 · openalex updated_date 2026/08/05
Abstract A simple one-parameter generalization of the Schwarzschild spacetime was recently suggested by A Simpson and M Visser [2019 J. Cosmol. Astropart. Phys. JCAP02(2019)042] as a toy model describing the regular black hole and traversable wormhole states separated by the border (one-way wormhole) state. We study quasinormal modes of all the three states and show that the black-hole/wormhole transition is characterized by echoes, while the remnant of the black hole state is kept in the time-domain profile of the wormhole perturbation at the initial stage of the exponential fall off. Calculations of quasinormal modes using the WKB method with Padé expansion and the time-domain integration are in good agreement. An analytical formula governing quasinormal modes in the eikonal regime is given.