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We study the influence of core-\textit{crust} transition pressure changes on the general dynamical properties of neutron star configurations. First we study the matching conditions in core-\textit{crust} transition pressure region, where…

广义相对论与量子宇宙学 · 物理学 2013-07-08 L. M. González-Romero , J. L. Blázquez-Salcedo

The evolution of the magnetic field in neutron star crusts because of the Hall effect has received significant attention over the last two decades, which is strongly justified because of the dominance of this effect in highly magnetised…

高能天体物理现象 · 物理学 2023-03-15 Konstantinos N. Gourgouliatos

The interior of a neutron star is expected to be occupied by a neutron $^3P_2$ superfluid, which is the condensate of spin-triplet $p$-wave Cooper pairs of neutrons with total angular momentum $J=2$. Here we investigate the thermodynamic…

核理论 · 物理学 2021-10-14 Takeshi Mizushima , Shigehiro Yasui , Daisuke Inotani , Muneto Nitta

We study the spin-flavor transitions of neutrinos in the magnetic fields of a collapsing star. For the neutrino mass squared difference (10^{-10} - 10) eV^2 the transitions take place in almost isotopically neutral region of the star, where…

高能物理 - 唯象学 · 物理学 2014-11-17 H. Athar , J. T. Peltoniemi , A. Yu. Smirnov

The properties of superdense matter in neutron star (NS) cores control NS thermal states by affecting the efficiency of neutrino emission from NS interiors. To probe these properties we confront the theory of thermal evolution of NSs with…

天体物理学 · 物理学 2009-03-19 K. P. Levenfish , P. Haensel

In this paper a neutron star with an inner core which undergoes a phase transition, which is characterized by conformal degrees of freedom on the phase boundary, is considered. Typical cases of such a phase transition are e.g. quantum Hall…

广义相对论与量子宇宙学 · 物理学 2011-11-10 F. Canfora , A. Giacomini , S. Willison

Flow of matter onto strongly magnetized neutron stars in X-ray binaries proceeds through accretion funnels that roughly follow geometry of the magnetic field. X-rays originate near surface of the neutron star, and it may happen that the…

天体物理学 · 物理学 2007-05-23 Miljenko Cemeljic , Tomasz Bulik

The possibility of a neutron m=2-superfluid in the interior of neutron stars is investigated. This pairing state is energetically favoured in strong magnetic fields ($H\sim 10^{16}-10^{17}$ G). Because of the node in the angular-dependent…

天体物理学 · 物理学 2016-08-30 Ch. Schaab , F. Weber , M. K. Weigel

In a recent paper by Link, it was pointed out that the standard picture of the neutron star core composed of a mixture of a neutron superfluid and a proton type-II superconductor is inconsistent with observations of a long period precession…

天体物理学 · 物理学 2009-11-10 Kirk B. W. Buckley , Max A. Metlitski , Ariel R. Zhitnitsky

The effects of strong magnetic fields on the inner crust of neutron stars are investigated after taking into account the anomalous magnetic moments of nucleons. Energy spectra and wave functions for protons and neutrons in a uniform…

天体物理学 · 物理学 2009-11-10 H. Wen , L. S. Kisslinger , Walter Greiner , G. Mao

We consider two types of mechanical coupling between the crust and the core of a precessing neutron star. First, we find that a hydromagnetic (MHD) coupling between the crust and the core strongly modifies the star's precessional modes when…

天体物理学 · 物理学 2009-11-10 Yuri Levin , Caroline D'Angelo

In proto-neutron stars with strong magnetic fields, the cross section for $\nu_e$ ($\bar\nu_e$) absorption on neutrons (protons) depends on the local magnetic field strength due to the quantization of energy levels for the $e^-$ ($e^+$)…

天体物理学 · 物理学 2009-10-30 Dong Lai , Y. -Z. Qian

As rotating neutron stars slow down, the pressure and the density in the core region increase due to the decreasing centrifugal forces and phase transitions may occur in the center. We extract the analytic behavior near the critical angular…

天体物理学 · 物理学 2008-11-26 H. Heiselberg , M. Hjorth-Jensen

Adjacent type-I and -II proton superconductors in a rotation-powered pulsar are predicted to exist in a metastable state containing macroscopic and quantized flux tubes, respectively. Previous studies show that the type-I and -II regions…

高能天体物理现象 · 物理学 2025-05-23 K. H. Thong , A. Melatos

Neutrino emission drives neutron star cooling for the first several hundreds of years after its birth. Given the low energy ($\sim$ keV) nature of this process, one expects very few nonstandard particle physics contributions which could…

天体物理学 · 物理学 2009-11-10 Prashanth Jaikumar , K. R. S. Balaji , Charles Gale

The neutrino chirality-flip process under the conditions of the supernova core is investigated in detail with the plasma polarization effects in the photon propagator taken into account. It is shown that the contribution of the proton…

高能物理 - 唯象学 · 物理学 2007-05-23 A. V. Kuznetsov , N. V. Mikheev

The evolution of the magnetic field is investigated for isolated as well as binary neutron stars. The overall nature of the field evolution is seen to be similar for an initial crustal field and an expelled flux. The major uncertainties of…

天体物理学 · 物理学 2007-05-23 Sushan Konar , Dipankar Bhattacharya

We derive the exact frame-dragging rate inside rotating neutron stars. This formula is applied to show that the frame-dragging rate monotonically decreases from the centre to the surface of the neutron star along the pole. In case of…

高能天体物理现象 · 物理学 2014-06-27 Chandrachur Chakraborty , Kamakshya Prasad Modak , Debades Bandyopadhyay

The evolution of the magnetic field in an accreting neutron star is investigated using a fully general relativistic treatment and assuming that initially the currents supporting the field are completely confined to the crust. We find that…

天体物理学 · 物理学 2009-10-31 Sushan Konar

We show that suppression of the baryon energy gaps, caused by the relative motion of superfluid and normal liquid components, can substantially influence dynamical properties and evolution of neutron stars. This effect has been previously…

太阳与恒星天体物理 · 物理学 2013-05-21 M. E. Gusakov , E. M. Kantor