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相关论文: Magnetic Field Magnitude Modification for a Force-…

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A more accurate analytical solution of the {\sl vertical-current approximation nonlinear force-free field (VCA3-NLFFF)} model is presented that includes besides the radial $(B_r)$ and the azimuthal $(B_\varphi)$ magnetic field components a…

太阳与恒星天体物理 · 物理学 2020-01-08 Markus J. Aschwanden

We present a new computational method for smoothly matching general relativistic ideal magnetohydrodynamics (MHD) to its force-free limit. The method is based on a flux-conservative formalism for MHD and its force-free limit, and a vector…

高能天体物理现象 · 物理学 2015-06-17 Vasileios Paschalidis , Stuart L. Shapiro

We investigate the evolution of both normal and inverse CMEs ejected at different initial velocities, and observe the effect of the background wind density and their magnetic polarity on their evolution up to 1 AU. We performed 2.5D…

太阳与恒星天体物理 · 物理学 2019-10-11 S. Hosteaux , E. Chané , S. Poedts

Previous LHC forecasts for the constrained minimal supersymmetric standard model (CMSSM), based on current astrophysical and laboratory measurements, have used priors that are flat in the parameter tan beta, while being constrained to…

高能物理 - 唯象学 · 物理学 2009-01-06 Ben C Allanach , Kyle Cranmer , Christopher G Lester , Arne M Weber

The magnetic behaviour of a disordered ferrimagnetic system Ap B1-p where both A and B represent the magnetic atoms with respective spin SA = 1/2 and SB = 1 in presence of high magnetic field is treated theoretically.Assuming the magnetic…

材料科学 · 物理学 2015-05-28 Sobhendu K. Ghatak

(abridged) We review methods for measuring the sizes, line widths, and luminosities of giant molecular clouds (GMCs) in molecular-line data cubes with low resolution and sensitivity. We find that moment methods are robust and sensitive --…

天体物理学 · 物理学 2008-11-26 Erik Rosolowsky , Adam Leroy

We present synthetic dust polarization maps of simulated molecular clouds (MCs) with the goal to systematically explore the origin of the relative orientation of the magnetic field ($\bf{B}$) with respect to the MC sub-structures identified…

星系天体物理 · 物理学 2020-08-26 D. Seifried , S. Walch , M. Weis , S. Reissl , J. D. Soler , R. S. Klessen , P. R. Joshi

Recent measurements of semileptonic $B$-meson decays into $\tau$-leptons are somewhat higher than expected in the standard model. Although the deviations are less than 3$\sigma$, they suggest the possibility of new physics affecting…

高能物理 - 唯象学 · 物理学 2015-06-12 Xiao-Gang He , German Valencia

We present a study of the magnetic field of the Small Magellanic Cloud (SMC), carried out using radio Faraday rotation and optical starlight polarization data. Consistent negative rotation measures (RMs) across the SMC indicate that the…

Predicting the Bz magnetic field embedded within ICMEs, also known as the Bz problem, is a key challenge in space weather forecasting. We study the hypothesis that upstream in situ measurements of the sheath region and the first few hours…

The training set of atomic configurations is key to the performance of any Machine Learning Force Field (MLFF) and, as such, the training set selection determines the applicability of the MLFF model for predictive molecular simulations.…

The article presents a study aimed at probing the dependence of the Chiral Magnetic Effect (CME) on the magnetic field strength using the Anomalous Viscous Fluid Dynamics (AVFD) model in Pb--Pb at LHC energies. The results demonstrate the…

核理论 · 物理学 2024-02-13 Panos Christakoglou

The mean plane-of-sky magnetic field strength is traditionally obtained from the combination of polarization and spectroscopic data using the Davis-Chandrasekhar-Fermi (DCF) technique. However, we identify the major problem of the DCF to be…

星系天体物理 · 物理学 2022-08-31 A. Lazarian , Ka Ho Yuen , Dmitri Pogosyan

Crossed magnetic field effects on bulk high-temperature superconductors have been studied both experimentally and numerically. The sample geometry investigated involves finite-size effects along both (crossed) magnetic field directions. The…

We present numerical experiments aimed to study the correlation between the magnetic field strength, $B$, and the density, $n$, in the cold atomic interstellar medium (CNM). We analyze 24 magneto-hydrodynamic models with different initial…

星系天体物理 · 物理学 2018-05-09 Adriana Gazol , Marco Villagran

We investigate the performance of a simple Bayesian fitting approach to correct the cosmic microwave background (CMB) B-mode polarization for gravitational lensing effects in the recovered probability distribution of the tensor-to-scalar…

宇宙学与河外天体物理 · 物理学 2017-11-28 M. Remazeilles , C. Dickinson , H. K. Eriksen , I. K. Wehus

Predicting the effects of a coronal mass ejection (CME) impact requires knowing if impact will occur, which part of the CME impacts, and its magnetic properties. We explore the relation between CME deflections and rotations, which change…

空间物理 · 物理学 2018-01-31 C. Kay , N. Gopalswamy

Electromagnetic metasurfaces offer the capability to realize almost arbitrary power conserving field transformations. These field transformations are governed by the generalized sheet transition conditions, which relate the tangential…

应用物理 · 物理学 2020-11-19 Stewart Pearson , Sean V. Hum

Large magnetic structures are launched away from the Sun during solar eruptions. They are observed as (interplanetary) coronal mass ejections (ICMEs or CMEs) with coronal and heliospheric imagers. A fraction of them are observed insitu as…

太阳与恒星天体物理 · 物理学 2020-07-01 P. Démoulin , S. Dasso , V. Lanabere , M. Janvier , C. Noûs

Non-linear force-free extrapolations are a common approach to estimate the 3D topology of coronal magnetic fields based on photospheric vector magnetograms. The force-free assumption is a valid approximation at coronal heights, but for the…