Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

# Multifrequency Gravitational Wave Background From Continuous Sources

Version 1 : Received: 18 January 2021 / Approved: 19 January 2021 / Online: 19 January 2021 (15:55:47 CET)

How to cite: Sivaram, C.; Kenath, A. Multifrequency Gravitational Wave Background From Continuous Sources. Preprints 2021, 2021010386 (doi: 10.20944/preprints202101.0386.v1). Sivaram, C.; Kenath, A. Multifrequency Gravitational Wave Background From Continuous Sources. Preprints 2021, 2021010386 (doi: 10.20944/preprints202101.0386.v1).

## Abstract

Gravitational waves have been detected in the past few years from several transient events such as merging stellar mass black holes, binary neutron stars, etc. These waves have frequencies in a band ranging from a few hundred hertz to around a kilohertz to which LIGO type instruments are sensitive. LISA would be sensitive to much lower range of frequencies from SMBH mergers. Apart from these cataclysmic burst events, there are innumerable sources of radiation which are continuously emitting gravitational waves of all frequencies. These include a whole mass range of compact binary and isolated compact objects as well as close planetary stellar entities. In this work, quantitative estimates are made of the gravitational wave background produced in typical frequency ranges from such sources emitting over a Hubble time and the fluctuations in the h values measured in the usual devices. Also estimates are made of the high frequency thermal background gravitational radiation from hot stellar interiors and newly formed compact objects.

## Keywords

gravitational waves; neutron star mergers; black hole mergers; primordial black holes; continuous gravitational waves; thermal gravitational waves; detection of gravitational waves

Views 0