Correlation analysis of stochastic gravitational wave background around 0.1-1Hz

TL;DR

This paper evaluates the potential for future space-based interferometers to directly measure the stochastic gravitational wave background in the 0.1-1Hz frequency range using correlation analysis and optimal TDI variables.

Contribution

It introduces a detailed analysis of detection prospects and parameter estimation accuracy for proposed LISA-type missions targeting the 0.1-1Hz gravitational wave background.

Findings

Detection signal-to-noise ratios are estimated for proposed missions.

Parameter estimation errors for amplitude and spectral index are evaluated.

Correlation analysis with optimal TDI variables enhances measurement prospects.

Abstract

We discuss prospects for direct measurement of stochastic gravitational wave background around 0.1-1Hz with future space missions. It is assumed to use correlation analysis technique with the optimal TDI variables for two sets of LISA-type interferometers. The signal to noise for detection of the background and the estimation errors for its basic parameters (amplitude, spectral index) are evaluated for proposed missions.