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Related papers: Magnetized White Dwarfs

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We present preliminary results of the study of intense magnetic fields effects on hybrid stars. For the description of the hadronic phase, we use the relativistic mean field approximation. For the quark matter phase, we employ the Field…

High Energy Astrophysical Phenomena · Physics 2019-02-11 Mauro Mariani , Milva G. Orsaria , Ignacio F. Ranea-Sandoval , Octavio M. Guilera

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 numerically construct a series of axisymmetric rotating magnetic wind solutions, aiming at exploring the observation properties of massive white dwarf (WD) merger remnants with a strong magnetic field, a fast spin, and an intense mass…

High Energy Astrophysical Phenomena · Physics 2023-11-01 Yici Zhong , Kazumi Kashiyama , Shinsuke Takasao , Toshikazu Shigeyama , Kotaro Fujisawa

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…

High Energy Astrophysical Phenomena · Physics 2025-08-26 Elias R. Most , Jeffrey Peterson , Luigi Scurto , Helena Pais , Veronica Dexheimer

The fact that a magnetic field in a fermion system breaks the spherical symmetry suggest that the intrinsic geometry of this system is axisymmetric rather than spherical. In this work we analyze the impact of anisotropic pressures, due to…

High Energy Astrophysical Phenomena · Physics 2014-07-10 D. Manreza Paret , J. E. Horvath , A. Perez Martinez

We conduct a model atmosphere analysis on all magnetic white dwarfs in the SDSS 100 pc sample. We have 163 magnetic targets in this sample, 87 of which are new discoveries, making this the largest volume-limited survey of magnetic white…

Solar and Stellar Astrophysics · Physics 2025-07-09 Adam Moss , Mukremin Kilic , Pierre Bergeron , Warren R. Brown , Gracyn Jewett , Marcel A. Agüeros , Maria Camisassa , Anthony Burrow

Measuring the mass-radius relation of individual white dwarfs is an empirically challenging task that has been performed for only a few dozen stars. We measure the white dwarf mass-radius relation using gravitational redshifts and radii of…

Controlling magnetic anisotropy is a key requirement for the fundamental understanding of molecular magnetism and is a prerequisite for numerous applications in magnetic storage, spintronics, and all-spin logic devices. In order to address…

We study numerically the so-called ``turn-over scenario'' for rotating magnetic white dwarfs and neutron stars. According to this scenario, the magnetic symmetry axis of the model inclines at a gradually increasing angle (the so-called…

Astrophysics · Physics 2007-05-23 V. S. Geroyannis

Our ongoing spectroscopic survey of high proper motion stars is a rich source of new magnetic white dwarfs. We present a few examples among cool white dwarfs showing the effect of field strength and geometry on the observed optical…

Solar and Stellar Astrophysics · Physics 2018-01-18 S. Vennes , A. Kawka , L. Ferrario , E. Paunzen

We consider a relativistic, degenerate, electron gas under the influence of a strong magnetic field, which describes magnetized white dwarfs. Landau quantization changes the density of states available to the electrons, thus modifying the…

Solar and Stellar Astrophysics · Physics 2013-04-12 Upasana Das , Banibrata Mukhopadhyay

Precise and accurate parameters for late-type (late K and M) dwarf stars are important for characterization of any orbiting planets, but such determinations have been hampered by these stars' complex spectra and dissimilarity to the Sun. We…

Solar and Stellar Astrophysics · Physics 2015-06-03 Andrew W. Mann , Gregory A. Feiden , Eric Gaidos , Tabetha Boyajian , Kaspar von Braun

The properties of uniformly rotating white dwarfs are analyzed within the framework of general relativity. Hartle's formalism is applied to construct self-consistently the internal and external solutions to the Einstein equations. The mass,…

Solar and Stellar Astrophysics · Physics 2012-10-29 Kuantay Boshkayev , Jorge Rueda , Remo Ruffini

We study the structure of electromagnetic field of slowly rotating magnetized star in a Randall-Sundrum II type braneworld. The star is modeled as a sphere consisting of perfect highly magnetized fluid with infinite conductivity and…

Solar and Stellar Astrophysics · Physics 2015-05-20 Viktoriya Morozova , Bobomurat Ahmedov

Magnetar magnetospheres gradually become twisted due to shearing by footpoint motion. The axisymmetric solutions for the force-free field with a power-law current model are calculated by taking into account general relativistic effects.…

High Energy Astrophysical Phenomena · Physics 2017-04-19 Yasufumi Kojima

We investigate the influence of spatially inhomogeneous chiral symmetry-breaking condensates in a magnetic field background on the equation of state for compact stellar objects. After building a hybrid star composed of nuclear and quark…

Nuclear Theory · Physics 2015-11-18 S. Carignano , E. J. Ferrer , V. de la Incera , L. Paulucci

To obtain a better statistics on the occurrence of magnetism among white dwarfs, we searched the spectra of the hydrogen atmosphere white dwarf stars (DAs) in the Data Release 7 of the Sloan Digital Sky Survey (SDSS) for Zeeman splittings…

Under the assumption of a specific nonminimal coupling of torsion to Under the assumption of a specific nonminimal coupling of torsion to electromagnetism, spacetime is birefringent in the presence of a gravitational field leading to…

Astrophysics · Physics 2007-05-23 Oliver Preuss , Stefan Jordan , Mark P. Haugan , Sami K. Solanki

Modified gravity theories can introduce modifications to the Poisson equation in the Newtonian limit. As a result, we expect to see interesting features of these modifications inside stellar objects. White dwarf stars are one of the most…

General Relativity and Quantum Cosmology · Physics 2017-10-06 Srimanta Banerjee , Swapnil Shankar , Tejinder P. Singh