The effects of superhigh magnetic fields on the equations of state of neutron stars

2015 ◽  
Vol 336 (8-9) ◽  
pp. 866-870 ◽  
Author(s):  
Z. F. Gao ◽  
N. Wang ◽  
Y. XU ◽  
H. Shan ◽  
X.-D. Li
Keyword(s):  
Magnetic Fields ◽  
Neutron Stars ◽  
Equations Of State

scholarly journals Maxwell Equation Violation by Density Dependent Magnetic Fields in Neutron Stars

2017 ◽  
Vol 45 ◽  
pp. 1760031 ◽  
Author(s):  
Marcelo D. Alloy ◽  
Débora P. Menezes
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Neutron Stars ◽  
Maxwell Equation ◽  
Field Intensity ◽  
Maxwell Equations ◽  
Equations Of State ◽  
Fundamental Equation ◽  
Density Dependent ◽  
The Core

We show that the widely used density dependent magnetic field prescriptions, necessary to account for the variation of the field intensity from the crust to the core of neutron stars violate one of the Maxwell equations. We estimate how strong the violation is when different equations of state are used and check for which cases the pathological problem can be cured. We then propose a simple solution that allows for the usual prescriptions to be used without violating a fundamental equation of physics.

scholarly journals Detectability of Continuous Gravitational Waves from Magnetically Deformed Neutron Stars

Galaxies ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 101
Author(s):  
Jacopo Soldateschi ◽  
Niccolò Bucciantini
Keyword(s):  
Magnetic Field ◽  
Neutron Star ◽  
Equation Of State ◽  
Magnetic Fields ◽  
Neutron Stars ◽  
Gravitational Waves ◽  
Nuclear Physics ◽  
Equations Of State ◽  
The Galaxy ◽  
The Magnetic Field

Neutron stars are known to contain extremely powerful magnetic fields. Their effect is to deform the shape of the star, leading to the potential emission of continuous gravitational waves. The magnetic deformation of neutron stars, however, depends on the geometry and strength of their internal magnetic field as well as on their composition, described by the equation of state. Unfortunately, both the configuration of the magnetic field and the equation of state of neutron stars are unknown, and assessing the detectability of continuous gravitational waves from neutron stars suffers from these uncertainties. Using our recent results relating the magnetic deformation of a neutron star to its mass and radius—based on models with realistic equations of state currently allowed by observational and nuclear physics constraints—and considering the Galactic pulsar population, we assess the detectability of continuous gravitational waves from pulsars in the galaxy by current and future gravitational waves detectors.

scholarly journals Equations of State for Hadronic Matter and Mass-Radius Relations of Neutron Stars with Strong Magnetic Fields

Universe ◽  
2022 ◽  
Vol 8 (1) ◽  
pp. 48
Author(s):  
Chinatsu Watanabe ◽  
Naotaka Yoshinaga ◽  
Shuichiro Ebata
Keyword(s):  
Magnetic Field ◽  
Neutron Star ◽  
Magnetic Fields ◽  
Neutron Stars ◽  
Functional Form ◽  
Equations Of State ◽  
Hadronic Matter ◽  
Strong Magnetic Fields ◽  
Specific Choice ◽  
Important Object

Neutron star is an important object for us to verify the equation of state of hadronic matter. For a specific choice of equations of state, mass and radius of a neutron star are determined, for which there are constraints from observations. According to some previous studies, since the strong magnetic field acts as a repulsive force, there is a possibility that neutron stars with strong magnetic fields may have relatively heavier masses than other non-magnetized neutron stars. In this paper, the structure of a neutron star with a strong internal magnetic field is investigated by changing its internal functional form to see how much the neutron star can be massive and also how radius of a neutron star can be within a certain range.

scholarly journals Updated universal relations for tidal deformabilities of neutron stars from phenomenological equations of state

2021 ◽  
Vol 103 (6) ◽  
Author(s):  
Daniel A. Godzieba ◽  
Rossella Gamba ◽  
David Radice ◽  
Sebastiano Bernuzzi
Keyword(s):  
Neutron Stars ◽  
Equations Of State ◽  
Phenomenological Equations

Origin of Magnetic Fields in White Dwarfs and Neutron Stars

1971 ◽  
Vol 231 (19) ◽  
pp. 32-33 ◽  
Author(s):  
R. F. O'CONNELL ◽  
K. M. ROUSSEL
Keyword(s):  
Magnetic Fields ◽  
Neutron Stars ◽  
White Dwarfs

Effect of Superstrong Magnetic Fields on Nuclear Energy Generation Rate in the Crust of Neutron Stars

2008 ◽  
Vol 49 (4) ◽  
pp. 1069-1072 ◽  
Author(s):  
Liu Hong-Lin ◽  
Luo Zhi-Quan ◽  
Liu Jing-Jing ◽  
Lai Xiang-Jun
Keyword(s):  
Magnetic Fields ◽  
Neutron Stars ◽  
Nuclear Energy ◽  
Energy Generation ◽  
Generation Rate

Physics in Strong Magnetic Fields Near Neutron Stars

Science ◽  
1991 ◽  
Vol 251 (4997) ◽  
pp. 1033-1038 ◽  
Author(s):  
A. K. HARDING
Keyword(s):  
Magnetic Fields ◽  
Neutron Stars ◽  
Strong Magnetic Fields

scholarly journals Atmospheres and radiating surfaces of neutron stars with strong magnetic fields

2016 ◽  
Author(s):  
Alexander Potekhin ◽  
Wynn C. G. Ho ◽  
Gilles Chabrier
Keyword(s):  
Magnetic Fields ◽  
Neutron Stars ◽  
Strong Magnetic Fields
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