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Related papers: Strong magnetic fields and pasta phases revisited

200 papers

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.…

High Energy Astrophysical Phenomena · Physics 2023-02-23 Vishal Parmar , H. C. Das , M. K. Sharma , S. K. Patra

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…

Nuclear Theory · Physics 2016-12-14 Jianjun Fang , Sidney Avancini , Helena Pais , Constança Providência

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…

High Energy Astrophysical Phenomena · Physics 2017-04-26 Jianjun Fang , Helena Pais , Sagar Pratapsi , Sidney Avancini , Jing Li , Constança Providência

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…

Nuclear Theory · Physics 2019-04-03 Debarati Chatterjee , Francesca Gulminelli , Debora P. Menezes

Neutron stars exhibit magnetic fields and densities far beyond those achievable in terrestrial laboratories, offering a natural probe of strongly interacting matter under extreme conditions. Using observationally anchored mass-radius…

Cosmology and Nongalactic Astrophysics · Physics 2026-01-13 Abriana Lyda , Prajwal MohanMurthy

In the present work, we consider nuclear matter in the innermost crust of neutron stars under the presence of a strong magnetic field within the framework of a relativistic mean-field description. Two models with a different slope of the…

Nuclear Theory · Physics 2022-03-09 Xiaopeng Wang , Jing Li , Jianjun Fang , Helena Pais , Constança Providência

We use the effective relativistic mean-field (E-RMF) model to study the crustal properties of the neutron star. The unified equations of state (EoS) are constructed using recently developed E-RMF parameter sets, such as FSUGarnet, IOPB-I,…

Nuclear Theory · Physics 2022-02-24 Vishal Parmar , H. C. Das , Ankit Kumar , M. K. Sharma , S. K. Patra

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…

Solar and Stellar Astrophysics · Physics 2016-04-07 Konstantinos N. Gourgouliatos , Toby Wood , Rainer Hollerbach

In this work, we have studied oscillations in the crust of a neutron star which magnetic field has both dipolar and toroidal components, the former extends from the stellar interior to the outer space and the later is confined inside the…

General Relativity and Quantum Cosmology · Physics 2020-02-05 Gibran Henrique de Souza , Ernesto Kemp

The effect of strong magnetic fields on the equation of state (EoS) for compact stars described with density-dependent relativistic hadronic models is studied. A comparison with other mean-field relativistic models is done. It is shown that…

Nuclear Theory · Physics 2008-10-27 A. Rabhi , C. Providencia , J. Da Providencia

We present a self-consistent model for the study of the structure of a neutron star in strong magnetic fields. Starting from a microscopic Lagrangian, this model includes the effect of the magnetic field on the equation of state, the…

High Energy Astrophysical Phenomena · Physics 2015-06-23 Debarati Chatterjee , Thomas Elghozi , Jerome Novak , Micaela Oertel

We study the properties of pasta structures and their influence on the neutron star observables employing the effective relativistic mean-field (E-RMF) model. The compressible liquid drop model is used to incorporate the finite size…

Nuclear Theory · Physics 2022-08-01 Vishal Parmar , H. C. Das , Ankit Kumar , Ankit Kumar , M. K. Sharma , P. Arumugam , S. K. Patra

In this work we study the structure of neutron stars under the effect of a poloidal magnetic field and determine the limiting highest magnetic field intensity which still allows a satisfactory description of magnetic neutron stars in the…

Nuclear Theory · Physics 2019-07-09 R. O. Gomes , Helena Pais , V. Dexheimer , Constança Providência , S. Schramm

Using relativistic mean-field models, the formation of clusterized matter, as the one expected to exist in the inner crust of neutron stars, is determined under the effect of strong magnetic fields. As already predicted from a calculation…

Nuclear Theory · Physics 2021-06-30 Helena Pais , Bruno Bertolino , Jianjun Fang , Xiaopeng Wang , Constança Providência

We present a systematic survey the range of predictions of the neutron star inner crust composition, crust-core transition densities and pressures, and density range of the nuclear `pasta' phases at the bottom of the crust provided by the…

Solar and Stellar Astrophysics · Physics 2015-05-30 W. G. Newton , M. Gearheart , Bao-An Li

We discuss torsional oscillations of highly magnetised neutron stars (magnetars) using two-dimensional, magneto-elastic-hydrodynamical simulations. Our model is able to explain both the low- and high-frequency quasi-periodic oscillations…

High Energy Astrophysical Phenomena · Physics 2018-03-21 Michael Gabler , Pablo Cerdá-Durán , Nikolaos Stergioulas , José A. Font , Ewald Müller

We study the impact of strong magnetic fields on the pasta phases that are expected to exist in the inner crust of neutron stars. We employ the relativistic mean field model to describe the nucleon interaction and use the self-consistent…

Nuclear Theory · Physics 2021-01-14 S. S. Bao , J. N. Hu , H. Shen

We present a formulation of magnetohydrodynamics which can be used to describe the evolution of strong magnetic fields in neutron star interiors. Our approach is based on viewing magnetohydrodynamics as a theory with a one-form global…

High Energy Astrophysical Phenomena · Physics 2024-12-10 Shreya Vardhan , Sašo Grozdanov , Samuel Leutheusser , Hong Liu

We investigate the magneto--elastic equilibrium of a neutron star crust and magnetic energy stored by the elastic force. The solenoidal motion driven by the Lorentz force can be controlled by the magnetic elastic force, so that conditions…

High Energy Astrophysical Phenomena · Physics 2022-01-19 Yasufumi Kojima , Shota Kisaka , Kotaro Fujisawa

We study the role of the pasta phases on the properties of rotating and magnetized neutron stars. In order to investigate such systems, we make use of two different relativistic mean-field unified inner-crust--core equations of state, with…

Nuclear Theory · Physics 2020-09-23 Ivo Sengo , Helena Pais , Bruno Franzon , Constança Providência
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