Stochastic backgrounds of gravitational waves from extragalactic sources

Abstract

Astrophysical sources emit gravitational waves in a large variety of processes occurred since the beginning of star and galaxy formation. These waves permeate our high redshift Universe, and form a background which is the result of the superposition of different components, each associated to a specific astrophysical process. Each component has different spectral properties and features that it is important to investigate in view of a possible, future detection. In this contribution, we will review recent theoretical predictions for backgrounds produced by extragalactic sources and discuss their detectability with current and future gravitational wave observatories.

10 pages, 9 figures, proceedings of the GWDAW 10 Conference, submitted to Class. & Quantum Grav

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• Synergy between measurements of the gravitational wave and the triple Higgs coupling in probing first order phase transition
• Have pulsar timing array methods detected a cosmological phase transition?
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• Gravitational waves and neutrino oscillations in Chern-Simons axion gravity
• Cosmic archaeology with massive stellar black hole binaries
• Astrophysical neutrino oscillations after pulsar timing array analyses
• An upper bound from helioseismology on the stochastic background of gravitational waves
• Gravitational Wave Searches with Pulsar Timing Arrays. I: Cancellation of Clock and Ephemeris Noises
• On the feasibility of employing solar-like oscillators as detectors for the stochastic background of gravitational waves