Unveiling the gravitational universe at μ-Hz frequencies

Author:

Sesana AlbertoORCID,Korsakova NataliaORCID,Sedda Manuel Arca,Baibhav Vishal,Barausse Enrico,Barke Simon,Berti Emanuele,Bonetti Matteo,Capelo Pedro R.,Caprini Chiara,Garcia-Bellido Juan,Haiman Zoltan,Jani Karan,Jennrich Oliver,Johansson Peter H.,Khan Fazeel Mahmood,Korol Valeriya,Lamberts Astrid,Lupi Alessandro,Mangiagli Alberto,Mayer Lucio,Nardini Germano,Pacucci Fabio,Petiteau Antoine,Raccanelli Alvise,Rajendran Surjeet,Regan John,Shao Lijing,Spallicci Alessandro,Tamanini Nicola,Volonteri Marta,Warburton Niels,Wong Kaze,Zumalacarregui Miguel

Abstract

AbstractWe propose a space-based interferometer surveying the gravitational wave (GW) sky in the milli-Hz to μ-Hz frequency range. By the 2040s, the μ-Hz frequency band, bracketed in between the Laser Interferometer Space Antenna (LISA) and pulsar timing arrays, will constitute the largest gap in the coverage of the astrophysically relevant GW spectrum. Yet many outstanding questions related to astrophysics and cosmology are best answered by GW observations in this band. We show that a μ-Hz GW detector will be a truly overarching observatory for the scientific community at large, greatly extending the potential of LISA. Conceived to detect massive black hole binaries from their early inspiral with high signal-to-noise ratio, and low-frequency stellar binaries in the Galaxy, this instrument will be a cornerstone for multimessenger astronomy from the solar neighbourhood to the high-redshift Universe.

Funder

Università degli Studi di Milano - Bicocca

Publisher

Springer Science and Business Media LLC

Subject

Space and Planetary Science,Astronomy and Astrophysics

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