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相关论文: Magnetized neutron stars: perturbative versus full…

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The magnetic field is believed to play an important role in at least some core-collapse supernovae if its magnitude reaches $10^{15}\,\rm{G}$, which is a typical value for a magnetar. In the presence of fast rotation, such a strong magnetic…

高能天体物理现象 · 物理学 2020-01-17 M. Bugli , J. Guilet , M. Obergaulinger , P. Cerdá-Durán , M. Á. Aloy

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

The strong magnetic field of neutron stars is intimately coupled to the observed temperature and spectral properties, as well as to the observed timing properties (distribution of spin periods and period derivatives). Thus, a proper…

高能天体物理现象 · 物理学 2019-12-23 José A. Pons , Daniele Viganò

We calculate non-axisymmetric oscillations of uniformly rotating polytropes magnetized with a purely toroidal magnetic field, taking account of the effects of the deformation due to the magnetic field. As for rotation, we consider only the…

太阳与恒星天体物理 · 物理学 2015-06-24 Hidetaka Asai , Umin Lee , Shijun Yoshida

Situation with highly magnetized neutron stars in binary systems is not yet certain. On the one hand, all best studied magnetars seem to be isolated objects. On the other, there are many claims based on model-dependent analysis of spin…

高能天体物理现象 · 物理学 2023-03-15 S. B. Popov

Magnetic fields are present in a wide variety of stars throughout the HR diagram and play a role at basically all evolutionary stages, from very-low-mass dwarfs to very massive stars, and from young star-forming molecular clouds and…

太阳与恒星天体物理 · 物理学 2010-01-15 JF Donati , JD Landstreet

Neutron stars are the most compact horizonless objects in the Universe, exhibiting the strongest known magnetic fields. They are potential sources of coincident gravitational waves and electromagnetic radiation across the entire spectrum.…

高能天体物理现象 · 物理学 2025-08-29 Fabrizio Venturi Piñas , Anson Ka Long Yip , Patrick Chi-Kit Cheong , Milton Ruiz

We present three-dimensional simulations of the dynamical bar-mode instability in magnetized and differentially rotating stars in full general relativity. Our focus is on the effects that magnetic fields have on the dynamics and the onset…

广义相对论与量子宇宙学 · 物理学 2015-06-16 Luca Franci , Roberto De Pietri , Kyriaki Dionysopoulou , Luciano Rezzolla

Isolated Neutron Stars are known to be endowed with extreme magnetic fields, whose maximum intensity ranges from 10^12 to 10^15 G, which permeates their magnetospheres. Their surrounding environment is also strongly magnetised, especially…

高能天体物理现象 · 物理学 2018-02-01 R. P. Mignani

Magnetic fields are believed to be generated in the cores of massive main sequence stars, and these may survive on to later stages of evolution. Observations of depressed dipole modes in red giant stars have been touted as evidence for…

太阳与恒星天体物理 · 物理学 2020-03-11 Shyeh Tjing Loi

Magnetars have already been a potential candidate as gravitational wave sources that could be detected by current and future terrestrial as well as ground based gravitational wave detectors. In this article, we focus on the gravitational…

广义相对论与量子宇宙学 · 物理学 2021-11-22 Sourav Roy Chowdhury , Maxim Khlopov

Star formation is a complex process involving the interplay of many physical effects, including gravity, turbulent gas dynamics, magnetic fields and radiation. Our understanding of the process has improved substantially in recent years,…

星系天体物理 · 物理学 2015-05-18 Daniel J. Price , Matthew R. Bate

We investigate the impact of using high-order numerical methods to study the merger of magnetised neutron stars with finite-temperature microphysics and neutrino cooling in full general relativity. By implementing a fourth-order accurate…

高能天体物理现象 · 物理学 2020-03-16 Elias R. Most , L. Jens Papenfort , Luciano Rezzolla

We present in this paper the first results of a spectropolarimetric analysis of a small sample (~ 20) of active stars ranging from spectral type M0 to M8, which are either fully-convective or possess a very small radiative core. This study…

We explore the thermal and magnetic-field structure of a late-stage proto-neutron star. We find the dominant contribution to the entropy in different regions of the star, from which we build a simplified equation of state for the hot…

高能天体物理现象 · 物理学 2021-02-24 S. K. Lander , P. Haensel , B. Haskell , J. L. Zdunik , M. Fortin

Spherical neutron star models are studied within tensor-scalar theories of gravity. Particularly, it is shown that, under some conditions on the second derivative of the coupling function and on star's mass, for a given star there exist two…

广义相对论与量子宇宙学 · 物理学 2009-10-31 J. Novak

We investigate the effects of strong magnetic fields on the properties of hyperon stars. The matter is described by a hadronic model with parametric coupling. The matter is considered to be at zero temperature, charge neutral,…

核理论 · 物理学 2013-07-30 R. O. Gomes , V. Dexheimer , C. A. Z. Vasconcellos

We investigate the quantum hadrodynamic equation of state for neutron stars (with and without including hyperons) in the presence of strong magnetic fields. The deduced masses and radii are consistent with recent observations of high mass…

高能天体物理现象 · 物理学 2012-11-19 Chung-Yeol Ryu , Myung-Ki Cheoun , Toshitaka Kajino , Tomoyuki Maruyama , Grant J. Mathews

Over the past decade, the numerical modeling of the magnetic field evolution in astrophysical scenarios has become an increasingly important field. In the crystallized crust of neutron stars the evolution of the magnetic field is governed…

太阳与恒星天体物理 · 物理学 2012-07-24 Daniele Viganò , Jose A. Pons , Juan A. Miralles

With the remarkable advent of gravitational-wave astronomy, we have shed light on previously shrouded events: compact binary coalescences. Neutron stars are promising (and confirmed) sources of gravitational radiation and it proves timely…

高能天体物理现象 · 物理学 2021-09-20 Fabian Gittins