Results 11 to 20 of about 910,791 (369)

Hyperons in Neutron Stars [PDF]

open access: yesUniverse, 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

Multi-messenger Observations of a Binary Neutron Star Merger [PDF]

open access: yesProceedings of Multifrequency Behaviour of High Energy Cosmic Sources - XIII — PoS(MULTIF2019), 2019
On 2017 August 17 a binary neutron star coalescence candidate (later designated GW170817) with merger time 12:41:04 UTC was observed through gravitational waves by the Advanced LIGO and Advanced Virgo detectors.
B. Abbott   +499 more
semanticscholar   +2 more sources

Progress in Constraining Nuclear Symmetry Energy Using Neutron Star Observables Since GW170817 [PDF]

open access: yesUniverse, 2021
The density dependence of nuclear symmetry energy is among the most uncertain parts of the Equation of State (EOS) of dense neutron-rich nuclear matter.
Bao-An Li   +3 more
semanticscholar   +1 more source

Equations of State for Hadronic Matter and Mass-Radius Relations of Neutron Stars with Strong Magnetic Fields

open access: yesUniverse, 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

Neutrino Fast Flavor Conversions in Neutron-Star Postmerger Accretion Disks. [PDF]

open access: yesPhysical Review Letters, 2021
A compact accretion disk may be formed in the merger of two neutron stars or of a neutron star and a stellar-mass black hole. Outflows from such accretion disks have been identified as a major site of rapid neutron-capture (r-process) nucleosynthesis and
Xinyu Li, D. Siegel
semanticscholar   +1 more source

Spontaneous scalarization in proto-neutron stars

open access: yesEuropean 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.
Fahimeh Rahimi, Zeinab Rezaei
doaj   +1 more source

Radiation from axion star-neutron star binaries with a tilted rotation axis in the presence of plasma

open access: yesJournal 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]

open access: yesAstronomy & 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

A Neutron Star Is Born [PDF]

open access: yesUniverse, 2021
A neutron star was first detected as a pulsar in 1967. It is one of the most mysterious compact objects in the universe, with a radius of the order of 10 km and masses that can reach two solar masses. In fact, neutron stars are star remnants, a kind of stellar zombie (they die, but do not disappear).
openaire   +4 more sources

Hyperons in neutron stars [PDF]

open access: yesPhysics Letters B, 2015
13 pages, 3 figures, 2 tables.
Katayama, Tetsuya, Saito, Koichi
openaire   +3 more sources

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