Results 91 to 100 of about 123,440 (246)

Constraining the Dense Matter Equation of State with New NICER Mass–Radius Measurements and New Chiral Effective Field Theory Inputs

open access: yesThe Astrophysical Journal Letters
Pulse profile modeling of X-ray data from the Neutron Star Interior Composition Explorer is now enabling precision inference of neutron star mass and radius.
Nathan Rutherford   +14 more
doaj   +1 more source

Role of strangeness to the neutron star mass and cooling

open access: yesEPJ Web of Conferences, 2018
Neutron star provides unique environments for the investigation of the physics of extreme dense matter beyond normal nuclear saturation density. In such high density environments, hadrons with strange quarks are expected to play very important role in ...
Lee Chang-Hwan   +3 more
doaj   +1 more source

Signatures for quark matter from multi-messenger observations

open access: yes, 2019
We review the prospects for detecting quark matter in neutron star cores. We survey the proposed signatures and emphasize the importance of data from neutron star mergers, which provide access to dynamical properties that operate on short timescales that
Alford, Mark G.   +2 more
core   +1 more source

Constraints on Microscopic and Phenomenological Equations of State of Dense Matter from GW170817

open access: yesUniverse, 2019
We discuss the constraints on the equation of state (EOS) of neutron star matter obtained by the data analysis of the neutron star-neutron star merger in the event GW170807.
Domenico Logoteta, Ignazio Bombaci
doaj   +1 more source

Can we distinguish low mass black holes in neutron star binaries?

open access: yes, 2018
The detection of gravitational waves from coalescing binary neutron stars represents another milestone in gravitational-wave astronomy. However, since LIGO is currently not as sensitive to the merger/ringdown part of the waveform, the possibility that ...
East, William E.   +2 more
core   +1 more source

Isolated Neutron Stars

open access: yes, 2023
Invited chapter for Handbook of X-ray and Gamma-ray Astrophysics (Section Eds. V. Doroshenko, A. Santangelo; Eds. C. Bambi and A. Santangelo, Springer Singapore, 2023)
Borghese, Alice, Esposito, Paolo
openaire   +2 more sources

Hyperneutron Stars from an Ab Initio Calculation

open access: yesThe Astrophysical Journal
The equation of state (EOS) of neutron matter plays a decisive role in understanding the neutron star properties and the gravitational waves from neutron star mergers. At sufficient densities, the appearance of hyperons generally softens the EOS, leading
Hui Tong   +2 more
doaj   +1 more source

Nuclear Pairing Gaps and Neutron Star Cooling

open access: yesUniverse, 2020
We study the cooling of isolated neutron stars with particular regard to the importance of nuclear pairing gaps. A microscopic nuclear equation of state derived in the Brueckner-Hartree-Fock approach is used together with compatible neutron and proton ...
Jin-Biao Wei   +2 more
doaj   +1 more source

Recent Developments on Kaon Condensation and Its Astrophysical Implications

open access: yes, 2008
We discuss three different ways to arrive at kaon condensation at n_c = 3 n_0 where n_0 is nuclear matter density: (1) Fluctuating around the n=0 vacuum in chiral perturbation theory, (2) fluctuating around n_VM near the chiral restoration density n_chi ...
Brown, Gerald E.   +2 more
core   +1 more source

Neutron Star Matter and Neutron Star Models

open access: yesZeitschrift für Naturforschung A, 1974
Various methods to study the ground state of neutron star matter are compared and the corresponding neutron star models are contrasted with each other. In the low density region ρ < 1014gr cm-3 the nuclear gas is treated here by means of a Thomas Fermi method and the nuclei are described by the droplet model of Myers and Swiatecki.
H. Heintzmann   +3 more
openaire   +2 more sources

Home - About - Disclaimer - Privacy