Results 31 to 40 of about 23,681 (306)

Monte Carlo simulation of the resolution volume for the SEQUOIA spectrometer

open access: yesEPJ Web of Conferences, 2015
Monte Carlo ray tracing simulations, of direct geometry spectrometers, have been particularly useful in instrument design and characterization. However, these tools can also be useful for experiment planning and analysis.
Granroth G.E., Hahn S.E.
doaj   +1 more source

Hyperon-Mixed Neutron Star Matter and Neutron Stars [PDF]

open access: yesProgress 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

Scattering searches for dark matter in subhalos: Neutron stars, cosmic rays, and old rocks [PDF]

open access: yes, 2022
In many cosmologies dark matter clusters on subkiloparsec scales and forms compact subhalos, in which the majority of Galactic dark matter could reside.
Kavanagh, Bradley James   +3 more
core   +1 more source

Condensate fraction in neutron matter [PDF]

open access: yesPhysical Review C, 2011
We study the Bose-Einstein condensation of fermionic pairs in the uniform neutron matter by using the concept of the off-diagonal long-range order of the two-body density matrix of the system. We derive explicit formulas for the condensate density $ρ_c$ and the condensate fraction $ρ_c/ρ$ in terms of the scaled pairing energy gap $Δ/ε_F$, where $ε_F ...
openaire   +2 more sources

Neutron-Mirror Neutron oscillations in Matter

open access: yes, 2021
12 pages, 3 figures, submitted to MDPI "Symmetry ...
Kamyshkov, Yuri   +3 more
openaire   +2 more sources

Dark Matter, Neutron Stars, and Strange Quark Matter [PDF]

open access: yesPhysical Review Letters, 2010
We show that self-annihilating neutralino WIMP dark matter accreted onto neutron stars may provide a mechanism to seed compact objects with long-lived lumps of strange quark matter, or strangelets, for WIMP masses above a few GeV. This effect may trigger a conversion of most of the star into a strange star.
Perez-Garcia, M, Silk, J, Stone, JR
openaire   +4 more sources

Ultra-thin 3D silicon sensors for neutron detection

open access: yes, 2012
We present a novel neutron detector based on an ultra-thin 3D silicon sensor with a sensitive volume only 10 µm thick. This ultra-thin active volume allows a high gamma-ray rejection, a key requirement in order to discriminate the signal coming from the ...
Garcia, Francisco   +10 more
core   +1 more source

Simulations of X-ray bursts and superbursts [PDF]

open access: yes, 2015
Observations of neutron star in binary systems provide powerful constrains on the physics at the surface of neutron stars. During the accretion of matter from the companion star, periodic nuclear explosion are triggered in the outer layers of the neutron
Fehlmann, Sofie
core   +1 more source

Holographic Quark Matter and Neutron Stars [PDF]

open access: yesPhysical Review Letters, 2016
We use a top-down holographic model for strongly interacting quark matter to study the properties of neutron stars. When the corresponding Equation of State (EoS) is matched with state-of-the-art results for dense nuclear matter, we consistently observe a first order phase transition at densities between two and seven times the nuclear saturation ...
Hoyos, Carlos   +3 more
openaire   +4 more sources

Neutron Star Extreme Matter Observatory: A kilohertz-band gravitational-wave detector in the global network

open access: yes, 2020
Gravitational waves from coalescing neutron stars encode information about nuclear matter at extreme densities, inaccessible by laboratory experiments. The late inspiral is influenced by the presence of tides, which depend on the neutron star equation of
Blair, D   +14 more
core   +1 more source

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