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相关论文: The magnetic stress tensor in magnetized matter

200 篇论文

We are interested on the effects, caused by strong variable density dependent magnetic fields, on hyperonic matter, its symmetry energy, equations of state and mass-radius relations. The inclusion of the anomalous magnetic moment of the…

核理论 · 物理学 2013-07-19 Rudiney Hoffmann Casali , Débora Peres Menezes

The current density of a moving electric dipole is expressed as the sum of polarization and magnetization currents. The magnetic field due to the latter current is that of a magnetic dipole moment that is consistent with the relativistic…

经典物理 · 物理学 2015-06-03 V. Hnizdo

When a star gets tidally disrupted by a supermassive black hole, its magnetic field is expected to pervade its debris. In this paper, we study this process via smoothed particle magnetohydrodynamical simulations of the disruption and early…

高能天体物理现象 · 物理学 2017-06-28 Clément Bonnerot , Daniel J. Price , Giuseppe Lodato , Elena M. Rossi

Magnetic confinement of stellar winds leads to the formation of magnetospheres, which can be sculpted into Centrifugal Magnetospheres (CMs) by rotational support of the corotating plasma. The conditions required for the CMs of magnetic…

Strongly magnetized symmetric nuclear matter is investigated within the context of effective baryon-meson exchange models. The magnetic field is coupled to the charge as well as the dipole moment of the baryons by including the appropriate…

核理论 · 物理学 2013-07-02 J. P. W. Diener , F. G. Scholtz

In this work, we study the effects of different magnetic field configurations in neutron stars described by a many-body forces formalism (MBF model). The MBF model is a relativistic mean field formalism that takes into account many-body…

核理论 · 物理学 2017-09-06 R. O. Gomes , B. Franzon , V. Dexheimer , S. Schramm , C. A. Z. Vasconcellos

We find and characterize the instabilities of the repulsive Hubbard chain in a magnetic field by studing all response functions at low frequency \omega and arbitrary momentum. The instabilities occur at momenta which are simple combinations…

强关联电子 · 物理学 2009-10-30 J. M. P. Carmelo , F. Guinea , P. D. Sacramento

It is well-known that the 5D equations without sources may be reduced to the 4D ones with sources, provided an appropriate definition for the energy-momentum tensor of matter in terms of the extra part of the geometry.The advantage consists…

广义相对论与量子宇宙学 · 物理学 2011-04-15 Maria C. Neacsu

Disk accretion onto a magnetized star occurs in a variety of astrophysical contexts, from young stars to X-ray pulsars. The magnetohydrodynamic interaction between the stellar field and the accreting matter can have a strong effect on the…

天体物理学 · 物理学 2009-10-31 Dmitri A. Uzdensky , Arieh Konigl , Christof Litwin

This chapter reviews the basic physics and thermodynamics that govern magnetocaloric materials. The thermodynamics of magnetic materials is discussed by introducing relevant free energy terms together with their microscopic origin leading…

材料科学 · 物理学 2017-02-28 Vittorio Basso

The effect of strong quantizing magnetic field on the equation of state of matter at the outer crust region of magnetars is studied. The density of such matter is low enough compared to the matter density at the inner crust or outer core…

天体物理学 · 物理学 2009-11-13 Nandini Nag , Sutapa Ghosh , Somenath Chakrabarty

Magnetar outbursts are powered by an intense magnetic field. The phenomenon has recently drawn significant attention because of a connection to some fast radio bursts that has been reported. Understanding magnetar outbursts may provide the…

高能天体物理现象 · 物理学 2024-08-27 Yasufumi Kojima

The origin of ultra-intense magnetic fields on magnetars is a mystery in modern astrophysics. We model the core collapse dynamics of massive progenitor stars with high surface magnetic fields in the theoretical framework of a self-similar…

高能天体物理现象 · 物理学 2015-05-13 Ren-Yu Hu , Yu-Qing Lou

In a previous article [Phys. Rev. D 82 104040 (2010)], we derived an energy-momentum tensor for linear gravity that exhibited positive energy density and causal energy flux. Here we extend this framework by localizing the angular momentum…

广义相对论与量子宇宙学 · 物理学 2012-10-03 Luke M. Butcher , Anthony Lasenby , Michael Hobson

In this poster we present the structure of an axisymmetric, force-free magnetosphere of a twisted, aligned rotating dipole within a corotating plasma-filled magnetosphere. We explore various profiles for the twist. We find that as the…

高能天体物理现象 · 物理学 2023-03-15 Dimitris Ntotsikas , Konstantinos N. Gourgouliatos

We consider the Lagrangian density for a free Maxwell field, in which the electromagnetic field tensor minimally couples to the affine connection, in the Einstein-Cartan-Sciama-Kibble theory of gravity. We derive the formulae for the…

广义相对论与量子宇宙学 · 物理学 2011-10-06 Nikodem J. Poplawski

We report on the formation of surface instabilities in a layer of thermoreversible ferrogel when exposed to a vertical magnetic field. Both static and time dependent magnetic fields are employed. Under variations of temperature, the…

软凝聚态物质 · 物理学 2009-03-06 Christian Gollwitzer , Marina Krekhova , Guenter Lattermann , Ingo Rehberg , Reinhard Richter

We present evidence for finite magnetic helicity density in the heliosphere and numerical models thereof, and relate it to the magnetic field properties of the dynamo in the solar convection zone. We use simulations and solar wind data to…

太阳与恒星天体物理 · 物理学 2012-08-03 Jörn Warnecke , Axel Brandenburg , Dhrubaditya Mitra

We study the thermodynamics of degenerate electron and charged vector boson gases in very intense magnetic fields. In degenerate conditions of the electron gas, the pressure transverse to the magnetic field $B$ may vanish, leading to a…

高能物理 - 唯象学 · 物理学 2009-10-31 M. Chaichian , S. S. Masood , C. Montonen , A. Perez Martinez , H. Perez Rojas

The retarded vector potential of a point magnetic dipole with an arbitrary time dependence undergoing accelerated relativistic motions is derived. A novel expression for the angular distribution of the radiated power of an arbitrary moving…

经典物理 · 物理学 2019-05-22 Seil Sautbekov