Non-Gaussianity test for discriminating gravitational wave backgrounds around 0.1-1Hz

Abstract

We propose a non-Gaussianity test for gravitational wave backgrounds by combining data streams of multiple detectors. This simple method allows us to check whether a detected background is "smooth" enough to be consistent with an inflation-type background, or is contaminated by individually undetectable weak burst signals. The proposed test would be quite useful for the Big Bang Observer or DECIGO whose primary target is a background from inflation at 0.1-1Hz where gravitational wave bursts from supernovae of population III stars might become a troublesome foreground.

5 pages, to appear in ApJL

References in corpus (4)

• Detection methods for non-Gaussian gravitational wave stochastic backgrounds
• Report on the first round of the Mock LISA Data Challenges
• Subtraction-noise projection in gravitational-wave detector networks
• Gaussianity of LISA's confusion backgrounds

Cited by in corpus (1)

• Non-Gaussianity analysis of GW background made by short-duration burst signals