Cosmology in the multi-messenger era

Abstract: We have great certainty on how gravity works around our solar system, but on large scales we still have a considerable lack of understanding about the constituents of our universe. Furthermore, observational tensions are starting to arise as we enter the era of precision cosmology. 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.

cosmology and nongalactic astrophysics

Audience: researchers in the topic

Latin American Webinars on Physics (LAWPhysics)

Series comments: The lawphysics is a webinar cycle created to connect physicists working on astroparticles, high energy physics, and astrophysics. Every webinar is broadcasted in youtube where they are always available for consulting and watching. The webinars take place every two or three weeks, on Wednesday at 15:00 GMT. The whole transmission lasts 60 minutes including questions and debates from the participants.

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