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相关论文: Role of magnetic fields on the outer crust in a ma…

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We investigate outer crust compositions for a wide range of magnetic field strengths, up to $B\simeq 4\times10^{18}$ G, employing the latest experimental nuclear masses supplemented with various mass models. The essential effects of the…

核理论 · 物理学 2023-02-17 Kazuyuki Sekizawa , Kentaro Kaba

The outer crust structure and composition of a cold, non-accreting magnetar is studied. We model the outer crust to be made of fully equilibrated matter where ionized nuclei form a Coulomb crystal embedded in an electron gas. The main…

核理论 · 物理学 2015-09-14 D. Basilico , D. Peña Arteaga , X. Roca-Maza , G. Colò

We study the effects of high magnetic fields on the structure and on the geometry of the crust in neutron stars. We find that the crust geometry is substantially modified by the magnetic field inside the star. We build stationary and…

高能天体物理现象 · 物理学 2017-12-18 B. Franzon , R. Negreiros , S. Schramm

We study the effect of strong magnetic fields, of the order of $10^{15}-10^{17}$ G, on the extension of the crust of magnetized neutron stars. The dynamical instability region of neutron-proton-electron ($npe$) matter at subsaturation…

核理论 · 物理学 2016-12-14 Jianjun Fang , Sidney Avancini , Helena Pais , Constança Providência

It has been clear for some time now that super-critical surface magnetic fields, exceeding 4 x 10^13 G, exist on a subset of neutron stars. These magnetars may harbor interior fields many orders of magnitude larger, potentially reaching…

高能天体物理现象 · 物理学 2015-03-16 Farbod Kamiab , Avery E. Broderick , Niayesh Afshordi

Current models of magnetars require extremely strong magnetic fields to explain their observed quiescent and bursting emission, implying that the field strength within the star's outer crust is orders of magnitude larger than the dipole…

太阳与恒星天体物理 · 物理学 2016-04-07 Konstantinos N. Gourgouliatos , Toby Wood , Rainer Hollerbach

Magnetars are neutron stars endowed with surface magnetic fields of the order of $10^{14}-10^{15}$~G, and with presumably much stronger fields in their interior. As a result of Landau quantization of electron motion, the neutron-drip…

高能天体物理现象 · 物理学 2016-07-21 N. Chamel , Y. D. Mutafchieva , Zh. K. Stoyanov , L. M. Mihailov , R. L. Pavlov

We discuss outer and inner crusts of neutron stars in strong magnetic fields. Here, we demonstrate the effect of Landau quantization of electrons on the ground state properties of matter in outer and inner crusts in magnetars. This effect…

高能天体物理现象 · 物理学 2015-06-12 Rana Nandi , Debades Bandyopadhyay

Magnetic fields of order $10^{15}$ G have been measured at the surface of some neutron stars, and much stronger magnetic fields are expected to be present in the solid region beneath the surface. The effects of the magnetic field on the…

高能天体物理现象 · 物理学 2019-05-15 Y. D. Mutafchieva , N. Chamel , Zh. K. Stoyanov , J. M. Pearson , L. M. Mihailov

The presence of strong magnetic fields in neutron stars, such as in magnetars, may significantly affect their crust-core transition properties and the crust size. This knowledge is crucial in the correct interpretation of astrophysical…

核理论 · 物理学 2019-04-03 Debarati Chatterjee , Francesca Gulminelli , Debora P. Menezes

The equilibrium properties of the outer crust of cold nonaccreting magnetars (i.e. neutron stars endowed with very strong magnetic fields) are studied using the latest experimental atomic mass data complemented with a microscopic atomic…

We discuss the effects of strong magnetic fields through Landau quantization of electrons on the structure and stability of nuclei in neutron star crust. In strong magnetic fields, this leads to the enhancement of the electron number…

高能天体物理现象 · 物理学 2015-05-20 Rana Nandi , Debades Bandyopadhyay

We discuss the ground state properties of matter in outer and inner crusts of neutron stars under the influence of strong magnetic fields. In particular, we demonstrate the effects of Landau quantization of electrons on compositions of…

高能天体物理现象 · 物理学 2015-06-12 Rana Nandi , Debades Bandyopadhyay

The Vlasov equation is used to determine the dispersion relation for the eigenmodes of magnetized nuclear and neutral stellar matter, taking into account the anomalous magnetic moment of nucleons. The formalism is applied to the…

高能天体物理现象 · 物理学 2017-04-26 Jianjun Fang , Helena Pais , Sagar Pratapsi , Sidney Avancini , Jing Li , Constança Providência

Several populations of neutron stars have surface magnetic fields above the critical strength of 4.4 x 10^{13} G where the electron cyclotron energy equals its rest mass energy. These include high-field rotation-powered pulsars, X-ray dim…

高能天体物理现象 · 物理学 2023-03-15 Alice K. Harding

Even though the crystallize nature of the neutron star crust plays a pivotal role in describing various fascinating astrophysical observations, its microscopic structure is not fully understood in the presence of a colossal magnetic field.…

高能天体物理现象 · 物理学 2023-02-23 Vishal Parmar , H. C. Das , M. K. Sharma , S. K. Patra

Isolated neutron stars show a diversity in timing and spectral properties, which has historically led to a classification in different sub-classes. The magnetic field plays a key role in many aspects of the neutron star phenomenology: it…

高能天体物理现象 · 物理学 2015-01-28 Daniele Viganò , Jose A. Pons , Juan A. Miralles , Nanda Rea

Covariant density functional theory is used to study the effect of strong magnetic fields, up to the limit predicted for neutron stars (for magnetars $B \approx10^{18}$G), on nuclear structure. All new terms in the equation of motion…

核理论 · 物理学 2015-05-28 Daniel Pena Arteaga , Marcella Grasso , Elias Khan , Peter Ring

The properties of $\isotope[12]{C}$, $\isotope[16]{O}$, and $\isotope[20]{Ne}$ nuclei in strong magnetic fields $B\simeq 10^{17}\,$G are studied in the context of strongly magnetized neutron stars and white dwarfs. The SKY3D code is…

核理论 · 物理学 2016-09-12 Martin Stein , Joachim Maruhn , Armen Sedrakian , P. -G. Reinhard

There has recently been growing evidence for the existence of neutron stars possessing magnetic fields with strengths that exceed the quantum critical field strength of $4.4 \times 10^{13}$ G, at which the cyclotron energy equals the…

天体物理学 · 物理学 2009-11-11 Alice K. Harding , Dong Lai
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