Results 1 to 10 of about 1,727 (201)
Neutron-mirror neutron mixing and neutron stars [PDF]
The European Physical Journal C, 2021 AbstractThe 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. In quark stars $$n-n'$$
Berezhiani Z. +3 more
openaire +3 more sources
Physical Review D, 2022 The fundamental nature of dark matter is entirely unknown. A compelling candidate is Twin Higgs mirror matter, invisible hidden-sector cousins of the Standard Model particles and forces. This predicts mirror neutron stars made entirely of mirror nuclear matter. We find their structure using realistic equations of state, robustly modified based on first-
Maurício Hippert +5 more
openaire +2 more sources
Hot Neutron Star Matter and Proto-neutron Stars [PDF]
, 2023 62 pages, 34 figures; book chapter to appear in "New Phenomena and New States of Matter in the Universe: From Quarks to Cosmos", World Scientific, eds.
Farrell, Delaney +6 more
openaire +3 more sources
Microlensing neutron stars [PDF]
Astronomy & Astrophysics, 2002 We investigate the chances that neutron stars act as the lense in a gravitational microlensing event towards the galactic bulge or a spiral arm. The observation of neutron stars by means of gravitational microlensing would allow the estimation of neutron star masses independently of the property of being a pulsar in a binary system.
Schwarz, Dominik, Seidel, D
openaire +2 more sources
Holographic neutron stars [PDF]
Journal of High Energy Physics, 2010 We construct in the context of the AdS/CFT correspondence degenerate composite operators in the conformal field theory that are holographically dual to degenerate stars in anti de Sitter space. We calculate the effect of the gravitational back-reaction using the Tolman-Oppenheimer-Volkoff equations, and determine the "Chandrasekhar limit" beyond which ...
de Boer, J. +2 more
openaire +3 more sources
Hyperon-Mixed Neutron Star Matter and Neutron Stars [PDF]
Progress of Theoretical Physics, 2002 Effective Σ − n and Σ − Σ − interactions are derived fromthe G-matrix calculations for {n+Σ − } matter and employed in the investigation of hyperon mixing in neutron star matter. The threshold densities ρt(Y ) at which hyperons start to appear are between 2ρ0 and 3ρ0 (where ρ0 is the normal nuclear density) for both Λ and Σ − , and their fractions ...
Nishizaki, Shigeru +2 more
openaire +2 more sources
PROTO-NEUTRON AND NEUTRON STARS [PDF]
Astronomy and Relativistic Astrophysics, 2010 Prepared for International Workshop on Astronomy and Relativistic Astrophysics (IWARA 2007), Joao Pessoa, Brazil, 3-6 Oct ...
Dexheimer, V., Schramm, S., Stoecker, H.
openaire +2 more sources
Neutron Stars—Thermal Emitters [PDF]
Space Science Reviews, 2014 Confronting theoretical models with observations of thermal radiation emitted by neutron stars is one of the most important ways to understand the properties of both, superdense matter in the interiors of the neutron stars and dense magnetized plasmas in their outer layers.
Potekhin, Alexander Y. +2 more
openaire +4 more sources
Neutron–Mirror-Neutron Oscillation and Neutron Star Cooling
Physical Review Letters, 2022 It was pointed out in a recent paper that the observed cooling rate of old, cold neutron stars (NS) can provide an upper limit on the transition rate of neutron to mirror neutron ($n-n'$). This limit is so stringent that it would preclude any discovery of $n \to n'$ oscillation in the current round of terrestrial searches for the process.
Itzhak Goldman +3 more
openaire +3 more sources
STRANGENESS IN NEUTRON STARS [PDF]
International Journal of Modern Physics D, 2007 It is generally agreed on that the tremendous densities reached in the centers of neutron stars provide a high-pressure environment in which several intriguing particles processes may compete with each other. These range from the generation of hyperons to quark deconfinement to the formation of kaon condensates and H-matter.
Weber, Fridolin +3 more
openaire +2 more sources