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Simulating the long-term evolution of temperature and magnetic fields in neutron stars is a major effort in astrophysics, having significant impact in several topics. A detailed evolutionary model requires, at the same time, the numerical…

High Energy Astrophysical Phenomena · Physics 2021-05-19 Daniele Viganò , Alberto García-García , José A. Pons , Clara Dehman , Vanessa Graber

Strongly magnetized neutron stars are popular candidates for producing detectable electromagnetic and gravitational-wave signals. Gravitational collapses of neutron stars triggered by a phase transition from hadrons to deconfined quarks in…

High Energy Astrophysical Phenomena · Physics 2024-10-25 Anson Ka Long Yip , Patrick Chi-Kit Cheong , Tjonnie Guang Feng Li

Soft X-ray emission from neutron stars affords powerful diagnostic tools for uncovering their surface and interior properties, as well as their geometric configurations. In the atmospheres of neutron stars, the presence of magnetic fields…

High Energy Astrophysical Phenomena · Physics 2025-10-29 Hoa Dinh Thi , Matthew G. Baring , Kun Hu , Alice K. Harding , Joseph A. Barchas

In this exploratory submission we present the visualization of the largest interstellar turbulence simulations ever performed, unravelling key astrophysical processes concerning the formation of stars and the relative role of magnetic…

Neutron stars are known to have strong magnetic fields reaching as high as $10^{15}$ Gauss, besides having strongly curved interior spacetime. So for computing an equation of state for neutron-star matter, the effect of magnetic field as…

General Relativity and Quantum Cosmology · Physics 2023-12-29 Golam Mortuza Hossain , Susobhan Mandal

The defining trait of magnetars, the most strongly magnetized neutron stars (NSs), is their transient activity in the X/$\gamma$-bands. In particular, many of them undergo phases of enhanced emission, the so-called outbursts, during which…

High Energy Astrophysical Phenomena · Physics 2022-09-14 Davide De Grandis , Roberto Turolla , Roberto Taverna , Elisa Lucchetta , Toby S. Wood , Silvia Zane

Studying the physical processes occurring in the region just above the magnetic poles of strongly magnetized, accreting binary neutron stars is essential to our understanding of stellar and binary system evolution. Perhaps more importantly,…

We initiate numerical studies of differentially rotating magnetised (proto) neutron stars by studying - through construction from first principles - the coupling between an assumed differential rotation and an impressed magnetic field. For…

Astrophysics · Physics 2007-05-23 A. V. Thampan

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

(Abridged) The rotational evolution of isolated neutron stars is dominated by the magnetic field anchored to the solid crust of the star. Assuming that the core field evolves on much longer timescales, the crustal field evolves mainly…

Solar and Stellar Astrophysics · Physics 2013-06-11 Jose A. Pons , Daniele Vigano , Ulrich Geppert

The detection of binary neutron star mergers represents one of the most important and complex astrophysical discoveries of the recent years. One of the unclear aspects of the problem is the turbulent magnetic field amplification, initially…

General Relativity and Quantum Cosmology · Physics 2020-11-11 Ricard Aguilera-Miret , Daniele Viganò , Federico Carrasco , Borja Miñano , Carlos Palenzuela

In this Letter, we report a realistic calculation of the magnetic field profile for the equation of state inside strongly magnetized neutron stars. Unlike previous estimates, which are widely used in the literature, we find that magnetic…

High Energy Astrophysical Phenomena · Physics 2017-10-11 V. Dexheimer , B. Franzon , R. O. Gomes , R. L. S. Farias , S. S. Avancini , S. Schramm

Intense magnetic fields in the atmospheres of neutron stars render non-trivial angular dependence of intensity and polarization of soft X-ray emission originating from their surfaces. By tracking the complex electric field vector for each…

High Energy Astrophysical Phenomena · Physics 2026-03-17 Hoa Dinh Thi , Matthew G. Baring , Kun Hu , Alice K. Harding , Rachael E. Stewart , George A. Younes , Joseph A. Barchas

Spectropolarimetric observations show that many low-mass stars possess large-scale poloidal magnetic fields with considerable dipole component, which in some cases exhibit temporal dynamics - cycles or reversals. Although it is widely…

Solar and Stellar Astrophysics · Physics 2025-07-02 Anna Guseva , Ludovic Petitdemange , Charly Pinçon

Galactic dynamo models have generally relied on input parameters that are very challenging to constrain. We address this problem by developing a model that uses observable quantities as input: the galaxy rotation curve, the surface…

Astrophysics of Galaxies · Physics 2024-04-04 Luke Chamandy , Rion Glenn Nazareth , Gayathri Santhosh

Various theoretical arguments motivate an expectation of a phase transition in matter at extreme densities above nuclear density, accompanied by hopes that gravitational wave observations may reveal the properties of such a transition.…

General Relativity and Quantum Cosmology · Physics 2021-06-09 Steven L. Liebling , Carlos Palenzuela , Luis Lehner

Our main goal in this work is to study magnetized neutron stars by using a fully general$-$relativity approach presented in the LORENE package\footnote{http://www.lorene.obspm.fr}. Here we have adopted a non-uniform magnetic field profile…

Solar and Stellar Astrophysics · Physics 2016-08-30 Bruno Franzon , Stefan Schramm

A model of the generation of a magnetic field in a neutron star is developed, based on an instability of the magnetic field caused by the electroweak interaction between electrons and nucleons in nuclear matter. The rate of change of the…

High Energy Astrophysical Phenomena · Physics 2017-03-16 Maxim Dvornikov

Pulsars are rapidly spinning neutron stars, that radiate at the expense of their strong magnetic field and their high surface temperature. Five decades of multi-wavelength observations showed a large variety of physical parameters, such as…

High Energy Astrophysical Phenomena · Physics 2024-02-23 Michela Rigoselli

The presence of superconducting and superfluid components in the core of mature neutron stars calls for the rethinking of a number of key magnetohydrodynamical notions like resistivity, the induction equation, magnetic energy and…

Solar and Stellar Astrophysics · Physics 2015-08-26 Vanessa Graber , Nils Andersson , Kostas Glampedakis , Samuel K. Lander