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The electromagnetic field in a magnetized neutron star and the underlying volume charges and currents are found. A general case of a rigidly rotating neutron star with infinite conductivity, arbitrary distribution of the internal magnetic…

High Energy Astrophysical Phenomena · Physics 2016-12-30 D. N. Sob'yanin

Magnetic field may distort neutron stars (NSs), but its effect has not been robustly tested through gravitational-wave observation yet due to the absence of a fast rotating Galactic magnetar. Part of gamma-ray bursts (GRBs) are potential to…

High Energy Astrophysical Phenomena · Physics 2022-10-19 Tingting Lin , Shuang Du , Weihua Wang , Shujin Hou , Renxin Xu

Future observations of continuous gravitational waves from single neutron stars, apart from their monumental astrophysical significance, could also shed light on fundamental physics and exotic particle states. One such avenue is based on…

High Energy Physics - Phenomenology · Physics 2020-04-22 P. V. S. Pavan Chandra , Mrunal Korwar , Arun M. Thalapillil

We consider a simulated population of isolated Galactic neutron stars. The rotational frequency of each neutron star evolves through a combination of electromagnetic and gravitational wave emission. The magnetic field strength dictates the…

General Relativity and Quantum Cosmology · Physics 2013-10-25 Leslie Wade , Xavier Siemens , David L. Kaplan , Benjamin Knispel , Bruce Allen

Models of rotating relativistic stars with a toroidal magnetic field have been computed for a sample of eight equations of state of cold dense matter. Non-rotating models admit important levels of magnetization and quadrupole distortion…

General Relativity and Quantum Cosmology · Physics 2015-06-18 Joachim Frieben , Luciano Rezzolla

Neutron stars are strongly magnetized rotating compact objects. Therefore they also produce huge electric fields accelerating particles to ultra-relativistic energies. The simplest magnetic topology is a dipole traditionally located at the…

High Energy Astrophysical Phenomena · Physics 2019-08-14 Jérôme Pétri

Neutron stars spin down over time due to a number of energy-loss processes. We provide tantalizing population-based evidence that millisecond pulsars (MSPs) have a minimum ellipticity of $\epsilon\approx10^{-9}$ around their spin axis and…

High Energy Astrophysical Phenomena · Physics 2018-08-23 G. Woan , M. D. Pitkin , B. Haskell , D. I. Jones , P. D. Lasky

Neutron stars may sustain a non-axisymmetric deformation due to magnetic distortion and are potential sources of continuous gravitational waves (GWs) for ground-based interferometric detectors. With decades of searches using available GW…

High Energy Astrophysical Phenomena · Physics 2017-08-09 He Gao , Zhoujian Cao , Bing Zhang

We study magneto-elastic oscillations of highly magnetized neutron stars (magnetars) which have been proposed as an explanation for the quasi-periodic oscillations (QPOs) appearing in the decaying tail of the giant flares of soft gamma-ray…

Solar and Stellar Astrophysics · Physics 2015-06-11 Michael Gabler , Pablo Cerdá-Durán , José A. Font , Ewald Müller , Nikolaos Stergioulas

Neutron stars radiate in a broad band spectrum from radio wavelengths up to very high energies. They have been sorted into several classes depending on their respective place in the $P-\dot{P}$ diagram and depending on spectral/temporal…

High Energy Astrophysical Phenomena · Physics 2019-03-20 Jérôme Pétri

In the last few years considerable observational resources have been devoted to study the thermal emission from isolated neutron stars. Detailed XMM and Chandra observations revealed a number of features in the X-ray pulse profile, like…

Astrophysics · Physics 2009-11-10 Silvia Zane , Roberto Turolla

Highly magnetized neutron stars (NSs) are characterized by a bewildering range of astrophysical manifestations. Here, building on our simulations of the evolution of magnetic stresses in the NS crust and its ensuing fractures (Perna & Pons…

High Energy Astrophysical Phenomena · Physics 2012-03-28 Jose A. Pons , Rosalba Perna

Estimations of magnetic fields of neutron stars, observed as radio and X-ray pulsars, are discussed. It is shown, that theoretical and observational values for different types of radiopulsars are in good correspondence. Magnetic fields of…

Astrophysics · Physics 2007-05-23 G. S. Bisnovatyi-Kogan

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

There is growing evidence, based on both X-ray and radio observations of isolated neutron stars, that besides the large--scale (dipolar) magnetic field, which determines the pulsar spin--down behaviour, small--scale poloidal field…

Astrophysics · Physics 2009-11-10 U. Geppert , M. Rheinhardt , J. Gil

NASA's NICER telescope has recently provided evidence for non-dipolar magnetic field structures in rotation-powered millisecond pulsars. These stars are assumed to have gone through a prolonged accretion spin-up phase, begging the question…

High Energy Astrophysical Phenomena · Physics 2022-07-20 Pushpita Das , Oliver Porth , Anna Watts

The extraordinary energetic activity of magnetars is usually explained in terms of dissipation of a huge internal magnetic field of the order of $10^{15-16}$G. How such a strong magnetic field can originate during the formation of a neutron…

High Energy Astrophysical Phenomena · Physics 2017-07-26 A. G. Pili , N. Bucciantini , L. Del Zanna

Gravitational redshifts of neutron stars have a theoretical upper limit of z=0.62. Also, it is generally believed that neutron stars have magnetic fields on the order of ten to the twelfth to ten to the thirteenth G. A previously predicted…

General Relativity and Quantum Cosmology · Physics 2007-05-23 David Apsel

Superluminous supernovae (SLSNe) have been suggested to be powered by strongly magnetized, rapidly rotating neutron stars which are often called magnetars. In this process, rotational energy of the magnetar is radiated via magnetic dipole…

High Energy Astrophysical Phenomena · Physics 2016-07-21 Takashi J. Moriya , Thomas M. Tauris

Nuclear ground state and collective excitation properties provide a means to probe the nuclear matter equation of state and establish connections between observables in finite nuclei and neutron stars. Specifically, the electric dipole…

Nuclear Theory · Physics 2026-01-07 P. S. Koliogiannis , E. Yuksel , T. Ghosh , N. Paar