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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…

We couple two-dimensional hydrodynamics to detailed one-dimensional multigroup flux-limited diffusion neutrino transport to investigate prompt convection in core collapse supernovae. Our initial conditions, time-dependent boundary…

天体物理学 · 物理学 2007-05-23 A. Mezzacappa , A. C. Calder , S. W. Bruenn , J. M. Blondin , M. W. Guidry , M. R. Strayer , A. S Umar

We investigate the inner crust structure of neutron stars using the Skyrme-Hartree-Fock approach with the Coulomb interaction treated beyond the Wigner-Seitz approximation. Our results suggest that the shell effects associated with unbound…

核理论 · 物理学 2009-11-07 Piotr Magierski , Paul-Henri Heenen

Nuclear density functional theory provides a unified description of finite nuclei and bulk nuclear matter, and is widely used to model the neutron star equation of state. However, extrapolations to supra-saturation densities require a…

The interpretation of present and future neutrino experiments requires accurate theoretical predictions for neutrino-nucleus scattering rates. Neutrino structure functions can be reliably evaluated in the deep-inelastic scattering regime…

高能物理 - 唯象学 · 物理学 2023-06-06 Alessandro Candido , Alfonso Garcia , Giacomo Magni , Tanjona Rabemananjara , Juan Rojo , Roy Stegeman

With the Boltzmann-radiation-hydrodynamics code, which we have developed to solve numerically the Boltzmann equations for neutrino transfer, the Newtonian hydrodynamics equations, and the Newtonian self-gravity simultaneously and…

A systematic and specific pattern due to the effects of the tensor forces is found in the evolution of spin-orbit splittings in neutron drops. This result is obtained from relativistic Brueckner-Hartree-Fock theory using the bare…

核理论 · 物理学 2018-02-06 Shihang Shen , Haozhao Liang , Jie Meng , Peter Ring , Shuangquan Zhang

We present a numerical study of shear viscosity and thermal conductivity of symmetric nuclear matter, pure neutron matter and $\beta$-stable nuclear matter, in the framework of the Brueckner theory. The calculation of in-medium cross…

太阳与恒星天体物理 · 物理学 2014-11-21 H. F. Zhang , U. Lombardo , W. Zuo

We calculate neutrino and antineutrino scattering off electrons and nucleons in supernovae using a detailed Monte Carlo transport code incorporating realistic equations of state. The goal is to determine whether particles in a neutron star…

天体物理学 · 物理学 2007-05-23 P. D. Morley , C. Dib , I. Schmidt

Possibilities to extract information on the strange form factors of the nucleon from neutrino (antineutrino) inelastic scattering on nuclei, in an energy range from 200 MeV to 1 GeV and more, are investigated in detail. All calculations are…

高能物理 - 唯象学 · 物理学 2009-10-30 W. M. Alberico , M. B. Barbaro , S. M. Bilenky , J. A. Caballero , C. Giunti , C. Maieron , E. Moya de Guerra , J. M. Udias

Supernova neutrinos could be well-suited for probing neutrino decay, since decay may be observed even for very small decay rates or coupling constants. We will introduce an effective operator framework for the combined description of…

天体物理学 · 物理学 2009-11-06 Manfred Lindner , Tommy Ohlsson , Walter Winter

This is the fourth of a series of papers in which we derive simultaneous constraints on cosmological parameters and X-ray scaling relations using observations of the growth of massive, X-ray flux-selected galaxy clusters. Here we examine…

宇宙学与河外天体物理 · 物理学 2015-05-14 Adam Mantz , Steven W. Allen , David Rapetti

A new structure function analysis of CCFR deep inelastic nu-N and nubar-N scattering data is presented for previously unexplored kinematic regions down to Bjorken x=0.0045 and Q^2=0.3 GeV^2. Comparisons to charged lepton scattering data…

高能物理 - 实验 · 物理学 2012-08-27 NuTeV Collaboration , B. T. Fleming

We investigate the flux of supernova relic neutrinos (SRN) for several neutrino oscillation models with parameters inferred from recent experimental results. In the calculation, we adopt the realistic {\it time-dependent} supernova density…

天体物理学 · 物理学 2010-04-05 Shin'ichiro Ando , Katsuhiko Sato

Neutrinos play a critical role of transporting energy and changing the lepton density within core-collapse supernovae and neutron star mergers. The quantum kinetic equations (QKEs) combine the effects of neutrino-matter interactions treated…

高能天体物理现象 · 物理学 2024-09-13 Sherwood A. Richers , Gail C. McLaughlin , James P. Kneller , Alexey Vlasenko

We analyze the influence of the single-particle structure on the neutron density distribution and the neutron skin in Ca, Ni, Zr, Sn, and Pb isotopes. The nucleon density distributions are calculated in the Hartree-Fock+BCS approach with…

核理论 · 物理学 2014-06-06 M. Warda , M. Centelles , X. Vinas , X. Roca-Maza

The incoherent approximation for the determination of the vibrational density of states of glasses from inelastic neutron or x-ray scattering data is extended to treat the coherent scattering. The method is applied to new room temperature…

无序系统与神经网络 · 物理学 2009-09-24 E. Fabiani , A. Fontana , U. Buchenau

We present a complementary methodology to constrain the total neutrino mass, $\sum m_{\nu}$, based on the diffusion coefficient of the splashback mass function of dark matter halos. Analyzing the snapshot data from the Massive Neutrino…

宇宙学与河外天体物理 · 物理学 2022-07-20 Suho Ryu , Jounghun Lee

We present a new, state-of-the-art computation of the Diffuse Supernova Neutrino Background (DSNB), where we use neutrino spectra from multi-dimensional, multi-second core collapse supernova simulations - including both neutron-star and…

高能天体物理现象 · 物理学 2026-01-21 Cecilia Lunardini , Tomoya Takiwaki , Tomoya Kinugawa , Shunsaku Horiuchi , Kei Kotake

In the most extended layer of the inner crust of neutron stars, nuclear matter is believed to form a crystal of clusters immersed in a superfluid neutron gas. Here we analyze this phase of matter within fully self-consistent…

核理论 · 物理学 2026-05-25 Giorgio Almirante , Theodora Kaskitsi , Michael Urban