The focus of this chapter is on describing the prospective sources of the gravitational wave universe accessible to present and future observations, from kHz, to mHz down to nano-Hz frequencies. The multi-frequency gravitational wave universe gives a deep view into the cosmos, inaccessible otherwise. It has as main actors core-collapsing massive stars, neutron stars, coalescing compact object binaries of different flavours, massive black hole binaries, extreme mass ratio inspirals, and possibly the very early universe itself. Here, we highlight the science aims and describe the gravitational wave signals expected from the sources and the information gathered in it. We show that the observation of gravitational wave sources will play a transformative role in our understanding of the processes ruling stellar evolution, galaxy assembly, the nature of the strong forces in neutron star interiors, and the most mysterious interaction of Nature: gravity.
An Overview of Gravitational Waves: Theory
- Pub Date:
- Astrophysics - High Energy Astrophysical Phenomena;
- Astrophysics - Cosmology and Nongalactic Astrophysics
- 101 pages, 34 figures. Introduction to the multi-frequency gravitational wave universe, providing an overarching view of the physics and astrophysics of gravitational wave sources with particular emphasis on binary systems. To appear in: An Overview of Gravitational Waves: Theory Sources and Detection. Edited by G. Auger and E. Plagnol (World Scientific, 2016)