https://doi.org/10.1140/epjp/s13360-023-04398-z
Regular Article
Detecting properties of echoes from the inspiraling stage with ground-based detectors
1
Shanghai Astronomical Observatory, Chinese Academy of Sciences, 200030, Shanghai, China
2
School of Astronomy and Space Science, University of Chinese Academy of Sciences, 100049, Beijing, China
3
School of Fundamental Physics and Mathematical Sciences, Hangzhou Institute for Advanced Study, UCAS, 310024, Hangzhou, China
4
Taiji Laboratory for Gravitational Wave Universe (Beijing/Hangzhou), University of Chinese Academy of Sciences, 100049, Beijing, China
5
OzGrav-ANU, Centre for Gravitational Astrophysics, College of Science, The Australian National University, 2601, ACT, Australia
Received:
19
February
2023
Accepted:
18
August
2023
Published online:
27
August
2023
The nature of black holes is one of the most exciting issues in gravitational physics. If there is an exotic compact object as compact as a black hole but without a horizon, gravitational wave echoes may be produced after the merger. In this work, we show that for extreme-mass-ratio binaries, even during the inspiraling phase of compact binary coalescence, the existence of the hard surface of the exotic compact object will produce detectable signals on the gravitational waves. We predict that once the LIGO-Virgo-KAGRA, Einstein Telescope, or Cosmic Explorer detect such kinds of sources, our model shows that one can constrain the properties of surfaces of the compact objects in inspiraling stage better than the current level.
Copyright comment Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
