[W93] Macarena Lagos: Cosmology in the multi-messenger era

Wednesday 06 May 2020 at 15:00 GMT

Speaker

Macarena Lagos
University of Kavli Institute for Cosmological Physics
University of Chicago, USA

Host

Alejandro Cárdenas-Avendaño
Fundación Universitaria Konrad Lorenz
University of Illinois at Urbana-Champaign

Abstract

In this talk, I will mention how we can learn more about cosmology with future gravitational wave data. In particular, I will focus on the use of standard sirens for testing cosmology beyond the concordance ΛCDM model. I will show how new physics can change the way gravitational waves propagate and discuss forecasts for binary neutron star mergers with Advanced LIGO. I will show that new physics can bias constraints on the current Hubble rate H0 from standard sirens, and thus it is crucial that we search for these new effects to make robust predictions on cosmological parameters. Finally, I will discuss the role that lunar laser ranging and binary pulsar data play on the outlook of standard sirens.

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