Results 1 to 10 of about 277,126 (347)
Spontaneous Scalarization in Proto-neutron Stars [PDF]
European Physical Journal C: Particles and Fields, 2023 Proto-neutron stars are born when a highly evolved and massive star collapses under gravity. In this paper, we investigate the spontaneous scalarization in proto-neutron stars. Based on the scalar tensor theory of gravity as well as the physical conditions in proto-neutron star, we examine the structure of proto-neutron star.
Fahimeh Rahimi, Zeinab Rezaei
arxiv +2 more sources
Hyperons in Neutron Stars [PDF]
Universe, 2021 I review the issues related to the appearance of hyperons in neutron star matter, focusing in particular on the problem of the maximum mass supported by hyperonic equations of state. I discuss the general mechanism that leads to the formation of hyperons
Domenico Logoteta
doaj +4 more sources
Superfluid neutron stars [PDF]
The Ninth Marcel Grossmann Meeting, 2001 Neutron stars are believed to contain (neutron and proton) superfluids. I will give a summary of a macroscopic description of the interior of neutron stars, in a formulation which is general relativistic. I will also present recent results on the oscillations of neutron stars, with superfluidity explicitly taken into account, which leads in particular ...
arxiv +5 more sources
Cooling of neutron stars with quark-hadron continuity [PDF]
EPJ Web of Conferences, 2022 Neutron stars are high-density objects formed by the gravitational collapse of massive stars, and the whole star can be likened to a giant nucleus. The interior of a neutron star is considered to contain exotic particles and states which do not appear in
Noda Tsuneo +4 more
doaj +1 more source
Universe, 2022 Neutron star is an important object for us to verify the equation of state of hadronic matter. For a specific choice of equations of state, mass and radius of a neutron star are determined, for which there are constraints from observations.
Chinatsu Watanabe +2 more
doaj +1 more source
Smoke and mirrors: Neutron star internal heating constraints on mirror matter [PDF]
Phys. Rev. Lett. 127, 061805 (2021), 2021 Mirror sectors have been proposed to address the problems of dark matter, baryogenesis, and the neutron lifetime anomaly. In this work we study a new, powerful probe of mirror neutrons: neutron star temperatures. When neutrons in the neutron star core convert to mirror neutrons during collisions, the vacancies left behind in the nucleon Fermi seas are ...
arxiv +1 more source
Crack‐Free Welding of a Co‐Base Superalloy with High γ' Precipitate Fraction
Advanced Engineering Materials, Volume 24, Issue 12, December 2022., 2022 Weldable Ni‐base superalloys are generally limited to low γ' fractions, whereas Co‐base superalloys with high γ' volume fractions should have a better weldability due to their lower γ' solvus temperature and less segregation. A new Co‐base superalloy with a high γ' volume fraction was crack‐free weldable, leading to very good strength, significantly ...
Lukas Haußmann +6 more
wiley +1 more source
Inferring the dense nuclear matter equation of state with neutron star tides [PDF]
EPJ Web of Conferences, 2022 During the late stages of a neutron star binary inspiral finite-size effects come into play, with the tidal deformability of the supranuclear density matter leaving an imprint on the gravitational-wave signal.
Pnigouras Pantelis +2 more
doaj +1 more source
Journal of High Energy Physics, 2022 We investigate the form of the radiation emitted by an axion star-neutron star binary using a f(r) = sech(r/R) profile for the axion star. Our analysis takes into account the co-rotating plasma of the neutron star.
A. Kyriazis
doaj +1 more source
The origin of the first neutron star – neutron star merger [PDF]
Astronomy & Astrophysics, 2018 The first neutron star-neutron star (NS-NS) merger was discovered on August 17, 2017 through gravitational waves (GW170817) and followed with electromagnetic observations. This merger was detected in an old elliptical galaxy with no recent star formation. We perform a suite of numerical calculations to understand the formation mechanism of this merger.
Belczynski, K. +10 more
openaire +7 more sources