Stochastic GW backgrounds and Ground based detectors

TL;DR

This paper explores how ground-based detectors can identify stochastic gravitational wave backgrounds, highlighting the potential for multi-frequency detection to reveal cosmological origins and discussing detector sensitivities and technologies.

Contribution

It analyzes the interplay between ground-based detectors and stochastic GW backgrounds, proposing methods for multi-frequency detection and assessing detector sensitivities to cosmological models.

Findings

Detection of GW in kHz and MHz--GHz regions can indicate a cosmological origin.

VIRGO detectors have specific sensitivities to string cosmological models.

Microwave cavities could enhance detection of stochastic GW backgrounds.

Abstract

The interplay between different ground based detectors and stochastic backgrounds of relic GW is described. A simultaneous detection of GW in the kHz and in the MHz--GHz region can point towards a cosmological nature of the signal. The sensitivity of a pair of VIRGO detectors to string cosmological models is presented. The implications of microwave cavities for stochastic GW backgrounds are discussed.