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We study the effect of the magnetic field geometry on the oscillation spectra of strongly magnetized stars. The magnetic field distributions include both toroidal and poloidal contributions. We observe that the toroidal contribution does…

广义相对论与量子宇宙学 · 物理学 2008-11-07 H. Sotani , A. Colaiuda , K. D. Kokkotas

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…

核理论 · 物理学 2019-07-09 R. O. Gomes , Helena Pais , V. Dexheimer , Constança Providência , S. Schramm

The magnetars are believed to be highly magnetized neutron stars having surface magnetic field 10^{14} - 10^{15} G. It is believed that at the center, the magnetic field may be higher than that at the surface. We study the effect of the…

高能天体物理现象 · 物理学 2013-02-15 Banibrata Mukhopadhyay , Monika Sinha

We construct the stably stratified magnetized stars within the framework of general relativity. The effects of magnetic fields on the structure of the star and spacetime are treated as perturbations of non-magnetized stars. By assuming…

广义相对论与量子宇宙学 · 物理学 2019-04-19 Shijun Yoshida

In this work we study the effects of strong magnetic fields on hybrid stars by using a full general-relativity approach, solving the coupled Maxwell-Einstein equation in a self-consistent way. The magnetic field is assumed to be…

高能天体物理现象 · 物理学 2016-01-05 B. Franzon , V. Dexheimer , S. Schramm

In this work we review the formalism normally used in the literature about the effects of density-dependent magnetic fields on the properties of neutron and quark stars, expose some ambiguities that arise and propose a way to solve the…

高能天体物理现象 · 物理学 2015-08-06 Luiz L. Lopes , Debora P. Menezes

We consider mixed configurations consisting of a wormhole filled by a strongly magnetized isotropic or anisotropic neutron fluid. The nontrivial topology of the spacetime is allowed by the presence of exotic matter. By comparing these…

广义相对论与量子宇宙学 · 物理学 2015-04-10 Ascar Aringazin , Vladimir Dzhunushaliev , Vladimir Folomeev , Burkhard Kleihaus , Jutta Kunz

Magnetized strange quark stars, composed of strange quark matter (SQM) and self-bound by strong interactions, can be formed if the energy per baryon of magnetized SQM is less than that of the most stable $^{56}$Fe nucleus under the zero…

高能物理 - 唯象学 · 物理学 2018-01-17 A. A. Isayev

We review the results in our recent works on the generation of strong magnetic fields in compact stars driven by the parity violating electroweak interactions between background fermions. The cases of a neutron star, a hybrid star, and a…

高能天体物理现象 · 物理学 2017-12-21 Maxim Dvornikov

Compact stars serve as natural systems where matter exists at densities far beyond those achievable in laboratory experiments. Among them, magnetars are expected to possess interior magnetic fields that may reach values of the order of…

高能天体物理现象 · 物理学 2026-05-01 Monika Sinha , Vivek Baruah Thapa

The configuration of the magnetic field in the interior of a neutron star is mostly unknown from observations. Theoretical models of the interior magnetic field geometry tend to be oversimplified to avoid mathematical complexity and tend to…

高能天体物理现象 · 物理学 2020-10-07 Prasanta Bera , D. I. Jones , Nils Andersson

In this paper for studying the anisotropic strange quark stars, we assume that the radial pressure inside the anisotropic star is a superposition of pressure in an isotropic case plus a Gaussian perturbation term. Considering a…

太阳与恒星天体物理 · 物理学 2016-07-26 H. Panahi , R. Monadi , I. Eghdami

A magnetar's magnetosphere gradually evolves by the injection of energy and helicity from the interior. Axisymmetric static solutions for a relativistic force-free magnetosphere with a power-law current model are numerically obtained. They…

高能天体物理现象 · 物理学 2018-02-07 Yasufumi Kojima , Satoki Okamoto

Strange quark matter could be found in the core of neutron stars or forming strange quark stars. As is well known, these astrophysical objects are endowed with strong magnetic fields which affect the microscopic properties of matter and…

天体物理学 · 物理学 2008-12-18 R. Gonzalez Felipe , A. Perez Martinez , H. Perez Rojas , M. Orsaria

We investigate anisotropic quark stars within the context of energy-momentum squared gravity (EMSG), assuming the internal composition consists of homogeneous, charge-neutral 3-flavor interacting quark matter with ${\cal O}(m_s^4)$…

广义相对论与量子宇宙学 · 物理学 2023-10-02 Qian Li , Xianming Liu , Ruijun Tang , Jiayong Xiao

We derive general equations for axisymmetric Newtonian MHD and use these as the basis of a code for calculating equilibrium configurations of rotating magnetised neutron stars in a stationary state. We investigate the field configurations…

太阳与恒星天体物理 · 物理学 2012-02-10 S. K. Lander , D. I. Jones

Magnetars are compact stars which are observationally determined to have very strong surface magnetic fields of the order of $10^{14}-10^{15}$G. The centre of the star can potentially have a magnetic field several orders of magnitude…

高能天体物理现象 · 物理学 2014-05-16 Ritam Mallick , Stefan Schramm

Binary neutron star mergers can produce extreme magnetic fields, some of which can lead to strong magnetar-like remnants. While strong magnetic fields have been shown to affect the dynamics of outflows and angular momentum transport in the…

高能天体物理现象 · 物理学 2025-08-26 Elias R. Most , Jeffrey Peterson , Luigi Scurto , Helena Pais , Veronica Dexheimer

We have succeeded in obtaining magnetized star models that have extremely strong magnetic fields in the interior of the star. In our formulation, arbitrary functions of the magnetic flux function appear in the expression for the current…

高能天体物理现象 · 物理学 2013-04-03 Kotaro Fujisawa , Shin'ichirou Yoshida , Yoshiharu Eriguchi

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