Neural network reconstruction of the dense matter equation of state from neutron star observables

نویسندگان

چکیده

The Equation of State (EoS) strongly interacting cold and hot ultra-dense QCD matter remains a major challenge in the field nuclear astrophysics. With advancements measurements neutron star masses, radii, tidal deformabilities, from electromagnetic gravitational wave observations, stars play an important role constraining EoS. In this work, we present novel method that exploits deep learning techniques to reconstruct EoS mass-radius (M-R) observations. We employ neural networks (NNs) represent model-independent way, within range $\sim$1-7 times saturation density. unsupervised Automatic Differentiation (AD) framework is implemented optimize EoS, so as yield through TOV equations, M-R curve best fits demonstrate works by rebuilding on mock data, i.e., pairs derived randomly generated polytropic reconstructed data with reasonable accuracy, using just 11 close current number actual

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Neutron Star Radii, Core-collapse Supernovae, and the Equation of State of Dense Matter

Neutron star mass and radius measurements are becoming sufficiently accurate as to offer astrophysical constraints on the properties of neutron-rich matter near the nuclear saturation density. Current observations, which imply that the radius of a 1.4 solar mass neutron star lies between 10.4 and 12.9 km (95% confidence), also imply that 43 < L < 67 MeV, where L is a parameter describing the sl...

متن کامل

Constraints on the High-density Nuclear Equation of State from Neutron Star Observables

A forefront area of modern research concerns the exploration of the properties of ultra-dense nuclear matter and the determination of the equation of state (EoS)–the relation between pressure, temperature and density–of such matter. Experimentally, relativistic heavy-ion collision experiments enable physicists to cast a brief glance at hot and ultra-dense matter for times as short as about 10 s...

متن کامل

Neutron Star Matter Equation of State and Gravitational Wave Emission

The EOS of strongly interacting matter at densities ten to fifteen orders of magnitude larger than the typical density of terrestrial macroscopic objects determines a number of neutron star properties, including the pattern of gravitational waves emitted following the excitation of nonradial oscillation modes. This paper reviews some of the approaches employed to model neutron star matter, as w...

متن کامل

Constraints on the equation of state of ultra - dense matter from observations of neutron stars

I discuss constraints on the equation of state of matter at supra-nuclear densities that can be derived from observations of neutron stars. I focus on recent work on Vela X-1, which may well be substantially more massive than the canonical 1.4 M ⊙ , and on the prospects offered by the 'isolated' or 'thermally-emitting' neutron stars. 1. The equation of state for ultra-dense matter To understand...

متن کامل

The Equation of State of Dense Matter: from Nuclear Collisions to Neutron Stars

The Equation of State (EoS) of dense matter represents a central issue in the study of compact astrophysical objects and heavy ion reactions at intermediate and relativistic energies. We have derived a nuclear EoS with nucleons and hyperons within the Brueckner-Hartree-Fock approach, and joined it with quark matter EoS. For that, we have employed the MIT bag model, as well as the Nambu–Jona-Las...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Journal of Cosmology and Astroparticle Physics

سال: 2022

ISSN: ['1475-7516', '1475-7508']

DOI: https://doi.org/10.1088/1475-7516/2022/08/071