Zobrazeno 1 - 10
of 1 407
pro vyhledávání: '"A. Chamel"'
Autor:
Chamel, Nicolas
The breaking of translational symmetry in the inner crust of a neutron star leads to the depletion of the neutron superfluid reservoir similarly to cold atomic condensates in optical lattices and in supersolids. The suppression of the superfluid frac
Externí odkaz:
http://arxiv.org/abs/2412.05599
Parametrized nucleon density distributions are widely employed for the calculation of the properties of atomic nuclei and dense inhomogeneous matter in compact stars within the Thomas-Fermi method and its extensions. We show that the use of insuffici
Externí odkaz:
http://arxiv.org/abs/2411.11021
Autor:
Grams, Guilherme, Shchechilin, Nikolai N., Sanchez-Fernandez, Adrian, Ryssens, Wouter, Chamel, Nicolas, Goriely, Stephane
Providing reliable data on the properties of atomic nuclei and infinite nuclear matter to astrophysical applications remains extremely challenging, especially when treating both properties coherently within the same framework. Methods based on energy
Externí odkaz:
http://arxiv.org/abs/2411.08007
Using the fourth-order extended Thomas-Fermi method with Strutinsky-integral shell and pairing corrections, we calculate the inner crust of neutron stars with the BSk31 functional, whose pairing has two terms: i) a term that is fitted to the results
Externí odkaz:
http://arxiv.org/abs/2410.01997
Publikováno v:
Phys. Rev. C 109, 055802 (2024)
We previously studied the inner crust and the pasta mantle of a neutron star within the 4th-order extended Thomas-Fermi (ETF) approach with consistent proton shell corrections added perturbatively via the Strutinsky integral (SI) theorem together wit
Externí odkaz:
http://arxiv.org/abs/2404.04020
Publikováno v:
Physical Review X 14, 041054 (2024)
We present a new numerical tool designed to probe the dense layers of neutron star crusts. It is based on the time-dependent Hartree-Fock-Bogoliubov theory with generalized Skyrme nuclear energy-density functionals of the Brussels-Montreal family. We
Externí odkaz:
http://arxiv.org/abs/2403.17499
Autor:
Allard, Valentin, Chamel, Nicolas
Publikováno v:
Phys. Rev. C 108, 015801 (2023)
The interior of mature neutron stars is expected to contain superfluid neutrons and superconducting protons. The influence of temperature and currents on superfluid properties is studied within the self-consistent time-dependent nuclear energy-densit
Externí odkaz:
http://arxiv.org/abs/2403.07766
Autor:
Allard, Valentin, Chamel, Nicolas
The current interpretation of the observed late time cooling of transiently accreting neutron stars in low-mass X-ray binaries during quiescence requires the suppression of neutron superfluidity in their crust at variance with recent ab initio many-b
Externí odkaz:
http://arxiv.org/abs/2403.07740
Torsional oscillations of magnetized neutron stars have been well studied since they may be relevant to the physical interpretation of some of the observed quasiperiodic oscillations in the magnetar giant flares. In the crustal region of a magnetar,
Externí odkaz:
http://arxiv.org/abs/2312.05676
Publikováno v:
Phys. Rev. C 108, 025805 (2023)
Our previous investigation of neutron-star crusts, based on the functional BSk24, led to a substantial reduction of the pasta mantle when Strutinsky integral and pairing corrections were added on top of the fourth-order extended Thomas-Fermi method (
Externí odkaz:
http://arxiv.org/abs/2309.01591