What can neutron stars reveal about the equation of state of dense matter?

Tews, Ingo

doi:10.1051/epjconf/202023507002

Title: What can neutron stars reveal about the equation of state of dense matter?

Journal Article · 16 June 2020 · EPJ Web of Conferences (Online)

DOI: https://doi.org/10.1051/epjconf/202023507002 · OSTI ID:1663191

^[1]

Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Neutron stars are astrophysical objects of extremes, reaching the highest densities we can observe in the cosmos, and probing matter under conditions that cannot be recreated in terrestrial experiments. In August 2017, the first neutron-star merger has been observed, which provided compelling evidence that these events are an important site for r-process nucleosynthesis. Furthermore, the gravitational-wave signal of such events might shed light upon the nature of strongly interacting matter in the neutron-star core. To understand these remarkable events, reliable nuclear physics input is essential. In this contribution, I explain how to use chiral effective field theory and advanced many-body methods to provide a consistent and systematic approach to strongly inter- acting systems from nuclei to neutron stars with controlled theoretical uncertainties. I will discuss recent results for the equation of state relevant for the nuclear astrophysics of neutron stars and neutron-star mergers.

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Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA); USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Science (SC)

Grant/Contract Number:: 89233218CNA000001; AC02-05CH11231; AC52-06NA25396

OSTI ID:: 1663191

Report Number(s):: LA-UR-20-21735; TRN: US2203626

Journal Information:: EPJ Web of Conferences (Online), Vol. 235; ISSN 2100-014X

Publisher:: EDP SciencesCopyright Statement

Country of Publication:: United States

Language:: English

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