Results 91 to 100 of about 729,877 (305)

Constraining Dark Boson Decay Using Neutron Stars

Universe, 2023
Inspired by the well-known anomaly in the lifetime of the neutron, we investigated its consequences inside neutron stars. We first assessed the viability of the neutron decay hypothesis suggested by Fornal and Grinstein within neutron stars, in terms of ...
Wasif Husain, Dipan Sengupta, A. W. Thomas   +2 more
doaj   +1 more source

The Emergence of a Lanthanide-rich Kilonova Following the Merger of Two Neutron Stars [PDF]

, 2017
We report the discovery and monitoring of the near-infrared counterpart (AT2017gfo) of a binary neutron-star merger event detected as a gravitational wave source by Advanced Laser Interferometer Gravitational-wave Observatory (LIGO)/Virgo (GW170817) and ...
N. Tanvir, A. Levan, C. Gonzalez-Fernandez, O. Korobkin, I. Mandel, S. Rosswog, J. Hjorth, P. D'Avanzo, A. Fruchter, Chris L. Fryer, T. Kangas, B. Milvang-Jensen, S. Rosetti, D. Steeghs, R. Wollaeger, Z. Cano, C. Copperwheat, S. Covino, V. D'Elia, A. de Ugarte Postigo, P. Evans, W. Even, S. Fairhurst, R. Jaimes, C. Fontes, Y. Fujii, J. Fynbo, B. Gompertz, J. Greiner, G. Hodosán, M. Irwin, P. Jakobsson, U. G. Jørgensen, D. A. Kann, J. Lyman, D. Malesani, R. McMahon, A. Melandri, P. O'Brien, J. Osborne, E. Palazzi, D. Perley, E. Pian, S. Piranomonte, M. Rabus, E. Rol, A. Rowlinson, S. Schulze, P. Sutton, C. Thöne, K. Ulaczyk, D. Watson, K. Wiersema, R. Wijers   +53 more
semanticscholar   +1 more source

Neutron stars: New constraints on asymmetric dark matter [PDF]

Physical Review D, 2019
We study an impact of asymmetric dark matter on properties of the neutron stars and their ability to reach the two solar masses limit, which allows us to present a new range of masses of dark matter particles and their fractions inside the star.
O. Ivanytskyi, V. Sagun, I. Lopes
semanticscholar   +1 more source

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, Rabindra N. Mohapatra, Shmuel Nussinov, Yongchao Zhang   +3 more
openaire   +3 more sources

Role of Structural Disorder on Phonon Transport and Thermal Conductivity in Li6PS5Br

Advanced Functional Materials, EarlyView.
Solid electrolytes are fast ion and slow heat conductors. Although both transport properties are governed by lattice dynamics and atomic structure, their interplay remains poorly understood. Here, we study this interrelation in anion‐ordered and disordered Li6PS5Br.
Lukas Ketter, Ryoma Sasaki, Kyra Strotmann, Wolfgang G. Zeier, Yoshitaka Tateyama   +4 more
wiley   +1 more source

Quarkyonic Matter and Neutron Stars. [PDF]

Physical Review Letters, 2018
We consider quarkyonic matter to naturally explain the observed properties of neutron stars. We argue that such matter might exist at densities close to that of nuclear matter, and at the onset, the pressure and the sound velocity in quarkyonic matter ...
L. Mclerran, S. Reddy
semanticscholar   +1 more source

Hyperons in neutron stars

Zeitschrift f�r Physik A Atomic Nuclei, 1987
Generalized beta equilibrium involving nucleons, hyperons and isobars is examined for neutron star matter. The hyperons produce a considerable softening of the equation of state. It is shown that the observed masses of neutron stars can be used to settle a recent controversy concerning the nuclear compressibility.
openaire   +2 more sources

GeS as an Emerging OTS Material: Atomic Structure and Modeling of ON/OFF Switching

Advanced Functional Materials, EarlyView.
The structural puzzle of glassy GeS, an advanced memory‐selector material, has finally been disentangled, revealing a patchwork of mixed tetrahedral and trigonal species. Under a high electric field, over‐ and under‐coordinated Ge and S defects, together with three‐membered rings, form an interconnected network associated with localized and extended ...
Andrey Tverjanovich, Jörg C. Neuefeind, Chris J. Benmore, Daniele Fontanari, Anton Sokolov, Maxim Khomenko, Shinji Kohara, Aleksei Bytchkov, Takeshi Usuki, Maria Bokova, Mohammad Kassem, Pascal Masselin, Mariana Milochova, Eugene Bychkov   +13 more
wiley   +1 more source

Unified equations of state for cold non-accreting neutron stars with Brussels-Montreal functionals. I. Role of symmetry energy [PDF]

Monthly notices of the Royal Astronomical Society, 2018
The theory of the nuclear energy-density functional is used to provide a unified and thermodynamically consistent treatment of all regions of cold non-accreting neutron stars. In order to assess the impact of our lack of complete knowledge of the density
J. Pearson, N. Chamel, A. Potekhin, A. Fantina, C. Ducoin, A. Dutta, S. Goriely   +6 more
semanticscholar   +1 more source

QCD in Neutron Stars and Strange Stars [PDF]

AIP Conference Proceedings, 2011
This paper provides an overview of the possible role of Quantum Chromo Dynamics (QDC) for neutron stars and strange stars. The fundamental degrees of freedom of QCD are quarks, which may exist as unconfined (color superconducting) particles in the cores of neutron stars. There is also the theoretical possibility that a significantly large number of up,
Weber, F., Negreiros, R.
openaire   +2 more sources