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Magnetohydrodynamic (MHD) turbulence plays a critical role in many key astrophysical processes such as star formation, acceleration of cosmic rays, and heat conduction. However, its properties are still poorly understood. We explore how to…

High Energy Astrophysical Phenomena · Physics 2024-10-30 Ru-Yue Wang , Jian-Fu Zhang , Fang Lu , Fu-Yuan Xiang

The anisotropy of magnetophydrodynamic turbulence is investigated by using solar wind data from the Helios 2 spacecraft. We investigate the behaviour of the complete high-order moment tensors of magnetic field increments and we compare the…

Space Physics · Physics 2009-11-13 Luca Sorriso-Valvo , Vincenzo Carbone , Roberto Bruno , Pierluigi Veltri

We perform radiative magnetohydrodynamic calculations for the solar quiet region to investigate the dependence of statistical flow on magnetic properties and the three-dimensional (3D) structure of magnetic patches in the presence of…

Solar and Stellar Astrophysics · Physics 2021-03-17 K. Takahata , H. Hotta , Y. Iida , T. Oba

Two-dimensional (2D) ferromagnets have been a fascinating subject of research, and magnetic anisotropy (MA) is indispensable for stabilizing the 2D magnetic order. Here, we investigate magnetic anisotropy energy (MAE), magnetic and…

Materials Science · Physics 2022-11-09 San-Dong Guo , Yu-Ling Tao , Kai Cheng , Bing Wang , Yee-Sin Ang

Magnetoseismology, a technique of magnetic field diagnostics based on observations of magnetohydrodynamic (MHD) waves, has been widely used to estimate the field strengths of oscillating structures in the solar corona. However, previously…

Solar and Stellar Astrophysics · Physics 2020-11-05 Zihao Yang , Hui Tian , Steven Tomczyk , Richard Morton , Xianyong Bai , Tanmoy Samanta , Yajie Chen

The density of states of a 2D d-wave superconductor in the vortex state with applied magnetic field $\bf H$ in the plane is shown to exhibit fourfold oscillations as a function of the angle of the field with respect to the crystal axes. We…

Superconductivity · Physics 2007-05-23 I. Vekhter , P. J. Hirschfeld , J. P. Carbotte , E. J. Nicol

The new challenges posed by the need of finding strong rare-earth free magnets demand methods that can predict magnetization and magnetocrystalline anisotropy energy (MAE). We argue that correlated electron effects, which are normally…

Context. Stellar magnetic fields are one of the candidates often invoked to explain the missing transport of angular momentum observed in the models of stellar interiors. However, the properties of an internal magnetic field and the…

Solar and Stellar Astrophysics · Physics 2019-07-03 V. Prat , S. Mathis , B. Buysschaert , J. Van Beeck , D. M. Bowman , C. Aerts , C. Neiner

We investigate how gravitational wave (GW) observations can probe the internal physics of neutron stars by extending the Tolman-Oppenheimer-Volkoff framework to include pressure anisotropy and internal magnetic fields. Two representative…

High Energy Astrophysical Phenomena · Physics 2025-12-04 Zhao-Wei Du , Xi-Long Fan

Alfv\'enic turbulence is an effective mechanism for particle acceleration in strongly magnetized, relativistic plasma. In this study, we investigate a scenario where turbulent plasma is influenced by a strong guide magnetic field, resulting…

Plasma Physics · Physics 2025-05-20 Cristian Vega , Stanislav Boldyrev , Vadim Roytershteyn

Magnetic properties of metals are investigated through electronic structure calculations based on the recently-proposed magnetic-field-containing relativistic tight-binding approximation (MFRTB) method [Phys. Rev. B \textbf{91}, 075122…

Strongly Correlated Electrons · Physics 2017-05-31 Masahiko Higuchi , Katsuhiko Higuchi

We study various holographic pure and mixed state entanglement measures in the confined/deconfined phases of a bottom-up AdS/QCD model in the presence of a background magnetic field. We analyse the entanglement entropy, entanglement wedge…

High Energy Physics - Theory · Physics 2023-05-10 Parul Jain , Siddhi Swarupa Jena , Subhash Mahapatra

We apply a novel technique of Faraday Rotation measure (RM) map analysis to three galaxy clusters, Abell 400, Abell 2634 and Hydra A, in order to estimate cluster magnetic field strengths, length scales and power spectra. This analysis is…

Astrophysics · Physics 2009-11-10 Corina Vogt , Torsten A. Ensslin

We present the results of our detailed pseudospectral direct numerical simulation (DNS) studies, with up to $1024^3$ collocation points, of incompressible, magnetohydrodynamic (MHD) turbulence in three dimensions, without a mean magnetic…

Chaotic Dynamics · Physics 2011-01-31 Ganapati Sahoo , Prasad Perlekar , Rahul Pandit

Three-dimensional direct numerical simulations (DNS) are implemented to investigate the energy cascade rate in compressible isothermal magnetohydrodynamic (MHD) turbulence. Utilizing an exact law derived from the K\'arm\'an-Howarth…

We calculate magnetic anisotropy energy of Fe and Ni by taking into account the effects of strong electronic correlations, spin-orbit coupling, and non-collinearity of intra-atomic magnetization. The LDA+U method is used and its equivalence…

Strongly Correlated Electrons · Physics 2009-10-31 Imseok Yang , Sergej Y. Savrasov , Gabriel Kotliar

We demonstrate field and current controlled magnetodynamics in nanocontact spin-torque nano-oscillators (STNOs) based on orthogonal magnetic tunnel junctions (MTJs). We systematically analyze the microwave properties (frequency $f$,…

Applied Physics · Physics 2019-10-14 S. Jiang , M. Ahlberg , S. Chung , A. Houshang , R. Ferreira , P. P. Freitas , J. Åkerman

Constraining dynamo theories of magnetic field origin by observation is indispensable but challenging, in part because the basic quantities measured by observers and predicted by modelers are different. We clarify these differences and…

Astrophysics of Galaxies · Physics 2019-12-24 Rainer Beck , Luke Chamandy , Ed Elson , Eric G. Blackman

Tracing magnetic fields is crucial as magnetic fields play an important role in many astrophysical processes. Earlier studies have demonstrated that Ground State Alignment (GSA) is a unique way to detect weak magnetic fields (1G> B>…

Instrumentation and Methods for Astrophysics · Physics 2015-05-22 Heshou Zhang , Huirong Yan , Le Dong

On the basis of the modern understanding of MHD turbulence, we propose a new way of using synchrotron radiation, namely using synchrotron intensity gradients for tracing astrophysical magnetic fields. We successfully test the new technique…

Astrophysics of Galaxies · Physics 2018-03-21 A. Lazarian , Ka Ho Yuen , Hyeseung Lee , Jungyeon Cho
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