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Electromotive force is an essential quantity in dynamo theory. During a coronal mass ejection (CME), magnetic helicity gets decoupled from the Sun and advected into the heliosphere with the solar wind. Eventually, a heliospheric magnetic…

太阳与恒星天体物理 · 物理学 2018-05-17 Philippe-A. Bourdin , Bernhard Hofer , Yasuhito Narita

In this paper, we are trying to show the uniqueness of transonic shock solutions in an expanding nozzle under certain conditions and assumptions on the boundary data and the shock solution. The idea is to compare two transonic shock…

偏微分方程分析 · 数学 2025-02-11 Beixiang Fang , Xin Gao , Wei Xiang

The interplay between novel topological states and superconductivity has garnered substantial interest due to its potential for topological quantum computing. The Josephson effect serves as a useful probe for edge superconductivity in these…

超导电性 · 物理学 2024-11-12 Junjie Qi , Chui-Zhen Chen , Juntao Song , Jie Liu , Ke He , Qing-Feng Sun , X. C. Xie

Kink-like flapping motions of current sheets are commonly observed in the magnetotail. Such oscillations have periods of a few minutes down to a few seconds and they propagate toward the flanks of the plasma sheet. Here, we report a…

空间物理 · 物理学 2021-09-08 L. Richard , Yu. V. Khotyaintsev , D. B. Graham , M. I. Sitnov , O. Le Contel , P. -A. Lindqvist

The magnetopause marks the outer edge of the Earth's magnetosphere and a distinct boundary between solar wind and magnetospheric plasma populations. In this letter, we use global magnetohydrodynamic simulations to examine the response of…

Traveling fronts describe the transition between two alternative states in a great number of physical and biological systems. Examples include the spread of beneficial mutations, chemical reactions, and the invasions by foreign species. In…

统计力学 · 物理学 2020-07-14 Ching-Hao Wang , Sakib Matin , Ashish B. George , Kirill S. Korolev

A comprehensive theory is developed that describes the coexistence of p-wave, spin-triplet superconductivity and itinerant ferromagnetism. It is shown how to use field-theoretic techniques to derive both conventional strong-coupling theory,…

超导电性 · 物理学 2009-02-06 T. R. Kirkpatrick , D. Belitz

We study supersonic flow past a convex corner which is surrounded by quiescent gas. When the pressure of the upstream supersonic flow is larger than that of the quiescent gas, there appears a strong rarefaction wave to rarefy the supersonic…

偏微分方程分析 · 数学 2018-01-16 Min Ding , Hairong Yuan

The transport of charged energetic particles in the presence of strong intermittent heliospheric turbulence is computationally analyzed based on known properties of the interplanetary magnetic field and solar wind plasma at 1 Astronomical…

高能天体物理现象 · 物理学 2015-06-18 Fathallah Alouani-Bibi , Jakobus A. le Roux

Even though the solar wind is highly supersonic, intense ultra-low frequency (ULF) wave activity has been detected in regions just upstream of the bow shocks of magnetized planets. This feature was first observed ahead of the Earth's bow…

地球与行星天体物理 · 物理学 2013-04-23 Nahuel Andres , Daniel O. Gomez , Cesar Bertucci , Christian Mazelle , Michele K. Dougherty

We investigate the long-term evolution of an initially buoyant magnetic flux tube emerging into a gravitationally-stratified coronal hole environment and report on the resulting oscillations and outflows. We perform 2.5D nonlinear numerical…

太阳与恒星天体物理 · 物理学 2012-04-02 J. A. McLaughlin , G. Verth , V. Fedun , R. Erdélyi

We investigate the harmonically trapped interacting Bose gas in a quasi-2D geometry using the classical field method. The system exhibits quasi-long-range order and non-classical rotational inertia at temperatures below the…

其他凝聚态物理 · 物理学 2008-07-10 T. P. Simula , M. J. Davis , P. B. Blakie

Cross-country soaring flights rely on intermittent atmospheric updrafts to cover long distances, producing trajectories that alternate between rapid relocation and local exploration. From a large dataset of paraglider, hang glider, and…

统计力学 · 物理学 2026-01-06 Jérémie Vilpellet , Alexandre Darmon , Michael Benzaquen

We investigate fundamental nonlinear dynamics of ferrofluidic Taylor-Couette flow - flow confined between two concentric independently rotating cylinders - consider small aspect ratio by solving the ferrohydrodynamical equations, carrying…

计算物理 · 物理学 2017-01-02 Sebastian Altmeyer , Younghae Do , Ying-Cheng Lai

The acceleration of interstellar pick-up ions as well as solar wind species has been observed at a multitude of interplanetary (IP) shocks by different spacecraft. This paper expands upon previous work modeling the phase space distributions…

天体物理学 · 物理学 2010-12-13 Matthew G. Baring , Errol J. Summerlin

Flux transfer events (FTEs) are a type of magnetospheric phenomena that exhibit distinctive observational signatures from the in-situ spacecraft measurements across the Earth's magnetopause. They are generally believed to possess a magnetic…

空间物理 · 物理学 2023-09-20 Shuo Wang , Ying Zou , Qiang Hu , Xueling Shi , Hiroshi Hasegawa

We observe the dynamics of waves propagating on the surface of a ferrofluid under the influence of a spatially and temporarily modulated field. In particular, we excite plane waves by a travelling lamellar modulation of the magnetization.…

其他凝聚态物理 · 物理学 2009-11-13 A. Beetz , C. Gollwitzer , R. Richter , I. Rehberg

We consider the recently discovered Dirac semimetals with two Dirac points $\pm{\bf K}$. In the presence of elastic deformations each fermion propagates in a curved space, whose metric is defined by the expansion of the effective…

介观与纳米尺度物理 · 物理学 2015-06-29 M. A. Zubkov

The origin of the Moreton wave observed in the chromosphere and the EIT wave observed in the corona during the eruption remains being an active research subject for a while. We investigate numerically in this work the evolutionary features…

太阳与恒星天体物理 · 物理学 2009-07-24 Hongjuan Wang , Chengcai Shen , Jun Lin

Recent coordinated observations of interplanetary scintillation (IPS) and stereoscopic heliospheric imagers (HIs) are significant to continuously track the propagation and evolution of solar eruptions throughout interplanetary space. In…

太阳与恒星天体物理 · 物理学 2013-08-16 Ming Xiong , A. R. Breen , M. M. Bisi , M. J. Owens , R. A. Fallows , G. D. Dorrian , J. A. Davies , P. Thomasson
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