Results 101 to 110 of about 123,440 (246)

Magnetar QPOs and Neutron Star Crust Elasticity

open access: yesUniverse
The crust region is a tiny fraction of neutron stars, but it has a variety of physical properties and plays an important role in astronomical observations. One of the properties characterizing the crust is elasticity. In this review, with the approach of
Hajime Sotani
doaj   +1 more source

SOFT GAMMA REPEATERS AND ANOMALOUS X-RAY PULSARS BEYOND MAGNETARS

open access: yesOdessa Astronomical Publications, 2016
The observational properties of Soft Gamma Repeaters and Anomalous X-ray Pulsars (SGR/AXP) indicate to necessity of the energy source different from a rotational energy of a neutron star.
G. S. Bisnovatyi-Kogan
doaj   +1 more source

A post-Newtonian diagnosis of quasiequilibrium configurations of neutron star-neutron star and neutron star-black hole binaries

open access: yes, 2007
We use a post-Newtonian diagnostic tool to examine numerically generated quasiequilibrium initial data sets for non-spinning double neutron star and neutron star-black hole binary systems.
Clifford M. Will   +6 more
core   +1 more source

Too massive neutron stars: The role of dark matter?

open access: yes, 2012
The maximum mass of a neutron star is generally determined by the equation of state of the star material. In this study, we take into account dark matter particles, assumed to behave like fermions with a free parameter to account for the interaction ...
Huang, Feng   +3 more
core   +1 more source

The physics of neutron stars [PDF]

open access: yesPhysics-Uspekhi, 2010
28 pages, 8 figures (in v2 and v3, several typos have been fixed). Invited topical review for the special issue of Uspekhi Fiz. Nauk (Physics - Uspekhi) in memory of V. L. Ginzburg (translated from Russian by Yu. V. Morozov, edited by A. M. Semikhatov and by the author)
openaire   +3 more sources

Physics-informed Priors Improve Gravitational-wave Constraints on Neutron-star Matter

open access: yesThe Astrophysical Journal Letters
Gravitational-wave astronomy shows great promise in determining nuclear physics in a regime not accessible to terrestrial experiments. We introduce physics-informed priors constrained by nuclear theory and perturbative quantum chromodynamics calculations,
Spencer J. Magnall   +4 more
doaj   +1 more source

Superfluidity of $\Lambda$ hyperons in neutron stars

open access: yes, 2010
We study the $^1S_0$ superfluidity of $\Lambda$ hyperons in neutron star matter and neutron stars. We use the relativistic mean field (RMF) theory to calculate the properties of neutron star matter.
B. D. Serot, H. Shen, Y. N. Wang
core   +1 more source

Hyperons and massive neutron stars: vector repulsion and SU(3) symmetry

open access: yes, 2012
With the discovery of massive neutron stars such as PSR J1614-2230, the question has arisen whether exotic matter such as hyperons can exist in the neutron star core. We examine the conditions under which hyperons can exist in massive neutron stars.
D. Chatterjee   +5 more
core   +1 more source

Constraints on the Symmetry Energy Using the Mass-Radius Relation of Neutron Stars

open access: yes, 2014
The nuclear symmetry energy is intimately connected with nuclear astrophysics. This contribution focuses on the estimation of the symmetry energy from experiment and how it is related to the structure of neutron stars.
Lattimer, James M., Steiner, Andrew W.
core   +1 more source

Detecting the Hadron-Quark Phase Transition with Gravitational Waves

open access: yesUniverse, 2019
The long-awaited detection of a gravitational wave from the merger of a binary neutron star in August 2017 (GW170817) marks the beginning of the new field of multi-messenger gravitational wave astronomy.
Matthias Hanauske   +9 more
doaj   +1 more source

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