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19942026
most citedCosmic-ray propagation and interactions in the Galaxy

1.2k citations

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32 papers · 1 filter

math.NA2018

Numerical methods for the construction of linear waves structures on discrete orthogonal grids

Sergey Dvornikov, Maxim Dvornikov

We study the possibility for the implementation of linear wave structures on discrete grids with various dimensions. The systems of the first order differential equations for the s…

astro-ph.SR2018★ 3 cited

On the Possibility of Generating Harmonics of the Electron Plasma Frequency in the Solar Atmosphere due to Explosive Instability in a System of Interpenetrating Electron and Ion Flows

V. V. Fomichev, S. M. Fainshtein, G. P. Chernov

An alternative mechanism is proposed for the generation of harmonics of the electron plasma frequency due to the development of explosive instability in a system of interpenetratin…

astro-ph.SR2018★ 2 cited

Positive and Negative Photospheric Fields in Solar Cycles 21 - 24

E. S. Vernova, M. I. Tyasto, D. G. Baranov +1

Distribution of the positive and negative photospheric fields is studied on the base of synoptic maps of the photospheric magnetic field produced by the National Solar Observatory…

hep-ph2018★ 5 cited

Affinity of NJL and NJL model results on duality and pion condensation in chiral asymmetric dense quark matter

T. G. Khunjua, K. G. Klimenko, R. N. Zhokhov-Larionov

In this paper we investigate the phase structure of a (1+1) and (3+1)-dimensional quark model with four-quark interaction and in the presence of baryon (), isospin () and…

hep-ph2018★ 15 cited

QCD phase diagram with chiral imbalance in NJL model: duality and lattice QCD results

T. G. Khunjua, K. G. Klimenko, R. N. Zhokhov

In addition to temperature and baryon chemical potential there are other parameters that matter in the real quark matter. One of them is isospin asymmetry which does exist in natur…

hep-ph2018★ 41 cited

Chiral imbalanced hot and dense quark matter: NJL analysis at the physical point and comparison with lattice QCD

T. G. Khunjua, K. G. Klimenko, R. N. Zhokhov

Hot and dense quark matter with isospin and chiral imbalances is investigated in the framework of the (3+1)-dimensional Nambu--Jona-Lasinio model (NJL) in the large- limit ($N…

astro-ph.SR2018★ 5 cited

Large Scale Properties of Tilt of Sunspot Groups and Joy's Law Near The Solar Equator

K. M. Kuzanyan, N. Safiullin, N. Kleeorin +2

We present a physical mechanism of formation of tilt angles of sunspots due to the process of formation of active regions below the solar photosphere. The contribution of Coriolis…

cond-mat.mes-hall2018★ 5 cited

Ferromagnetic resonance in thin ferromagnetic film with surface anisotropy

N. A. Usov

The ferromagnetic resonance frequencies are obtained for a thin ferromagnetic film with surface anisotropy for the cases when the external magnetic field is applied perpendicularly…

astro-ph.SR2018★ 36 cited

Solar Eruptions, Forbush Decreases and Geomagnetic Disturbances from Outstanding Active Region 12673

I. M. Chertok, A. V. Belov, A. A. Abunin

Based on our tool for the early diagnostics of solar eruption geoeffectiveness (EDSEG tool; Chertok et al., 2013, 2015, 2017), we have analyzed space weather disturbances that occu…

physics.flu-dyn2018★ 1 cited

Cascade processes in rapidly rotating turbulence

M. Yu. Reshetnyak, O. Pokhotelov

The process of the kinetic energy and kinetic helicity transfer over the spectrum in an incompressible, rapidly rotating turbulent flow is considered. An analogue of the Fjortoft t…

hep-ph2018★ 7 cited

Electric current induced by an external magnetic field in the presence of electroweak matter

Maxim Dvornikov

We study the generation of an electric current, along the external magnetic field, of fermions, interacting by parity violating electroweak forces with background matter. First, we…

astro-ph.SR2018★ 9 cited

Magnetic field as a tracer for studying the differential rotation of the solar corona

O. G. Badalyan, V. N. Obridko

The differential rotation of the solar corona for the period 1976-2004 was studied as a function of the distance from the center of the Sun. For this study, we developed a method u…

astro-ph.SR2018★ 15 cited

Diagnostic Analysis of the Solar Proton Flares of September 2017 by Their Radio Bursts

I. M. Chertok

The powerful flares that occurred in the Sun on September 4-10, 2017 are analyzed on the basis of the technique for the quantitative diagnostics of proton flares developed in IZMIR…

astro-ph.SR2018★ 16 cited

Horizontal photospheric flows trigger a filament eruption

T. Roudier, B. Schmieder, B. Filippov +2

A large filament composed principally of two sections erupted sequentially in the southern hemisphere on January 26 2016. The central, thick part of the northern section was first…

astro-ph.HE2018★ 3 cited

Cosmic ray acceleration in accretion flows of galaxy clusters

V. N. Zirakashvili, V. S. Ptuskin

We investigate acceleration of cosmic rays by shocks and accretion flows in galaxy clusters. Numerical results for spectra of accelerated particles and nonthermal emission are pres…

nucl-th2018★ 13 cited

The entrainment matrix of a superfluid nucleon mixture at finite temperatures

Lev B. Leinson

It is considered a closed system of non-linear equations for the entrainment matrix of a non-relativistic mixture of superfluid nucleons at arbitrary temperatures below the onset o…

physics.space-ph2018★ 13 cited

Evolution of the solar wind speed with heliocentric distance and solar cycle. Surprises from Ulysses and unexpectedness from observations of the solar corona

O. V. Khabarova, V. N. Obridko, R. A. Kislov +5

An extensive analysis of Ulysses observations of the solar wind speed V from 1990 to 2008 is undertaken. It is shown that the evolution of V with heliocentric distance r depends su…

hep-ph2018★ 8 cited

Spin-flavor oscillations of Dirac neutrinos in a plane electromagnetic wave

Maxim Dvornikov

We study spin and spin-flavor oscillations of Dirac neutrinos in a plane electromagnetic wave with circular polarization. The evolution of massive neutrinos with nonzero magnetic m…

physics.flu-dyn2018★ 8 cited

Minimum Quadratic Helicity States

Petr M. Akhmet'ev, Simon Candelaresi, Alexandr Yu Smirnov

Building on previous results on the quadratic helicity in magnetohydrodynamics (MHD) we investigate particular minimum helicity states. Those are eigenfunctions of the curl operato…

astro-ph.SR2018★ 2 cited

Solar coronal loop dynamics near the null point above active region NOAA 2666

Boris Filippov

We analyse observations of a saddle-like structure in the corona above the western limb of the Sun on 2017 July 18. The structure was clearly outlined by coronal loops with typical…

astro-ph.HE2018★ 10 cited

Magnetic helicity evolution in a neutron star accounting for the Adler-Bell-Jackiw anomaly

Maxim Dvornikov, Victor B. Semikoz

We analyze the role of the surface terms in the conservation law for the sum of the magnetic helicity density and the chiral imbalance of the charged particle densities. These term…

astro-ph.SR2018★ 15 cited

Superflares on Giant Stars

M. M. Katsova, L. L. Kitchatinov, D. Moss +2

The Kepler mission identified huge flares on various stars including some of solar type. These events are substantially more energetic than solar flares, and so they are referred t…

astro-ph.SR2018★ 25 cited

Local sunspot oscillations and umbral dots

Y. Zhugzhda, R. Sych

Data analysis of sunspot oscillation based on 6-hr SDO run of observation showed that low frequency (0.2 < ! < 1 mHz) oscillations are local similar to three and five minute oscill…

hep-ph2018★ 10 cited

Chiral magnetic effect in the presence of an external axial-vector field

Maxim Dvornikov

We study the excitation of the electric current of chiral fermions along the external magnetic field, known as the chiral magnetic effect, in the presence of the background axial-v…