SMuK 2021 – wissenschaftliches Programm

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SYNS: Symposium Neutron stars

SYNS 1: Symposium on Neutron Stars

SYNS 1.2: Hauptvortrag

Donnerstag, 2. September 2021, 14:40–15:20, Audimax

Probing subatomic physics with gravitational waves — •Tanja Hinderer — Institute for Theoretical Physics, Utrecht University, NL

The gravitational waves from merging binary systems carry unique information about the internal structure of compact objects. For neutron stars -- objects comprising matter compressed by strong gravity to supra-nuclear densities where novel phases emerge -- this opens unique opportunities for advancing our understanding of matter and fundamental interactions in largely unexplored regimes. Measuring this information in the data analysis relies on accurate models of the interplay of matter with strong-field, dynamical gravity. I will discuss the imprints of neutron star matter on the gravitational wave signals during the binary inspiral epoch, and the need for modeling these effects with a tapestry of approximation schemes for the interplay of dynamical gravity and matter. I will also highlight what we can learn from binaries involving a neutron star and a black hole and summarize the new insights we have gained from recent gravitational-wave measurements of such systems as well as from double neutron star events. I will conclude with an outlook onto the remaining challenges and exciting prospects for the next years, as gravitational-wave science continues to move towards an era of precision physics.