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Physical Review Letters, 1965 Several authors have suggested that the recently discovered extraterrestrial sources of x rays may be hot neutron stars. The plausibility of this suggestion, and in fact the likelihood that astronomers will ever be able to observe neutron stars by their x-ray emission, depend critically upon the cooling times of the hot stars.
John N. Bahcall, R. A. Wolf
core +9 more sources
Strongly interacting matter exhibits deconfined behavior in massive neutron stars. [PDF]
Nat Commun, 2023 Neutron-star cores contain matter at the highest densities in our Universe. This highly compressed matter may undergo a phase transition where nuclear matter melts into deconfined quark matter, liberating its constituent quarks and gluons.
Annala E +6 more
europepmc +3 more sources
QCD equations of state and speed of sound in neutron stars [PDF]
AAPPS Bulletin, 2021 Neutron stars are cosmic laboratories to study dense matter in quantum chromodynamics (QCD). The observable mass-radius relations of neutron stars are determined by QCD equations of state and can reflect the properties of QCD phase transitions.
Toru Kojo
doaj +2 more sources
Neutron-mirror neutron mixing and neutron stars [PDF]
European Physical Journal C: Particles and Fields, 2021 The oscillation of neutron n into mirror neutron $$n'$$ n ′ , its mass degenerate partner from dark mirror sector, can gradually transform the neutron stars into the mixed stars consisting in part of mirror dark matter.
Zurab Berezhiani +3 more
doaj +4 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
Abundances of Neutron-capture Elements in 62 Stars in the Globular Cluster Messier 15 [PDF]
The Astrophysical JournalM15 is a globular cluster with a known spread in neutron-capture elements. This paper presents abundances of neutron-capture elements for 62 stars in M15.
Jonathan Cabrera Garcia +9 more
doaj +2 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
On the Sound Speed in Neutron Stars [PDF]
Astrophysical Journal Letters, 2022 Determining the sound speed c s in compact stars is an important open question with numerous implications on the behavior of matter at large densities and hence on gravitational-wave emission from neutron stars.
Sinan Altiparmak, C. Ecker, L. Rezzolla
semanticscholar +1 more source
Can we distinguish quark stars from neutron stars with measurements of global properties? [PDF]
EPJ Web of Conferences, 2022 The phase state of the dense stellar matter is an exciting topic in the area of nuclear astrophysics. It may be probed by observed properties of neutron stars from, for example, the currently operating satellites (NICER, Neutron star Interior Composition
Li Ang
doaj +1 more source
Dark matter admixed neutron stars [PDF]
Physical Review D, 2021 Neutron stars could contain a mixture of ordinary nuclear matter and dark matter, such that dark matter could influence observable properties of the star, such as its mass and radius.
Ben Kain
semanticscholar +1 more source