Astronomy and Astrophysics – Astrophysics
Scientific paper
2005-02-25
Astronomy and Astrophysics
Astrophysics
6 pages, 5 figures, To appear in Proceedings of the 22nd Texas Symposium on Relativistic Astrophysics, Stanford University, De
Scientific paper
We investigate the expected gravitational wave emission from coalescing supermassive black hole (SMBH) binaries resulting from mergers of their host galaxies. We employ a semi-analytic model of galaxy and quasar formation based on the hierarchical clustering scenario to estimate the amplitude of the expected stochastic gravitational wave background owing to inspiraling SMBH binaries and bursts rates owing to the SMBH binary coalescence events. We find that the characteristic strain amplitude of the background radiation is $h_c(f) \sim 10^{-16} (f/1 \mu {\rm Hz})^{-2/3}$ for $f \lesssim 1 \mu {\rm Hz}$. The main contribution to the total strain amplitude of the background radiation comes from SMBH coalescence events at $0
Enoki Motohiro
Inoue Kaiki T.
Nagashima Masahiro
Sugiyama Naoshi
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