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19942026
most citedCosmic-ray propagation and interactions in the Galaxy

1.2k citations

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41 papers · 1 filter

astro-ph.HE2026

Ultra-High Energy Cosmic Rays from the Galactic Center

V. N. Zirakashvili, S. I. Rogovaya

It is shown that Eddington-like accretion event in the Galactic center several million years ago and particle acceleration at accompanying shocks and jets could explain the observe…

astro-ph.HE2023

Magnetic helicity in rotating neutron stars

Maxim Dvornikov

We study the magnetic helicity evolution in neutron stars (NSs). First, we analyze how the surface terms affect the conservation law for the sum of the chiral imbalance of the char…

astro-ph.HE2023★ 5 cited

Neutrino spin oscillations in a magnetized Polish doughnut

Maxim Dvornikov

We study the gravitational scattering of ultrarelativistic neutrinos off a rotating supermassive black hole (BH) surrounded by a thick magnetized accretion disk. Neutrinos interact…

astro-ph.HE2022★ 9 cited

Ultra high energy cosmic rays from past activity of Andromeda galaxy

V. N. Zirakashvili, V. S. Ptuskin, S. I. Rogovaya

It is shown that the relativistic jets associated with the growth and past activity of the supermassive black hole in the Andromeda galaxy could be the main source of cosmic rays w…

astro-ph.HE2022★ 7 cited

Hybrid cooling of the Cassiopeia A neutron star

Lev B. Leinson

The observed rapid cooling of the neutron star Cassiopeia A is usually interpreted as being caused by transitions of neutrons and protons in the star's core from the normal state t…

astro-ph.HE2021

Role of the radiative stage for cosmic ray acceleration in SNRs

V. N. Zirakashvili, V. S. Ptuskin

We consider diffusive shock acceleration in supernova remnants throughout their evolution including a radiative stage. It is found that a more efficient acceleration and fast exit…

astro-ph.HE2021★ 21 cited

Magnetic fields in the accretion disks for various inner boundary conditions

Daniela V. Boneva, Evgeny A. Mikhailov, Maria V. Pashentseva +1

The magnetic fields of accretion disks play an important role in studying their evolution. We may assume that its generation is connected to the dynamo mechanism, which is similar…

astro-ph.HE2021★ 27 cited

Grammage of cosmic rays in the proximity of supernova remnants embedded in a partially ionized medium

S. Recchia, D. Galli, L. Nava +5

We investigate the damping of Alfvén waves generated by the cosmic ray resonant streaming instability in the context of the cosmic ray escape and propagation in the proximity of su…

astro-ph.HE2021★ 62 cited

The primary cosmic-ray energy spectrum measured with the Tunka-133 array

N. M. Budnev, A. Chiavassa, O. A. Gress +21

The EAS Cherenkov light array Tunka-133, with 3 km geometric area, is taking data since 2009.The array permits a detailed study of energy spectrum and mass composition o…

astro-ph.HE2020★ 9 cited

Flavor ratios of astrophysical neutrinos interacting with stochastic gravitational waves having arbitrary spectra

Maxim Dvornikov

We study the evolution and oscillations of fixed massive neutrinos interacting with stochastic gravitational waves (GWs). The energy spectrum of these GWs is Gaussian, with the cor…

astro-ph.HE2020★ 11 cited

Vortex lattice in rotating neutron spin-triplet superfluid

Lev B. Leinson

In the Ginzburg-Landau limit, a possible texture without singular cores in a rotating neutron spin-triplet superfluid is studied. It is constructed the lattice of non-singular vort…

astro-ph.HE2020★ 10 cited

Generation of strong magnetic fields in a nascent neutron star accounting for the chiral magnetic effect

Maxim Dvornikov, V. B. Semikoz, D. D. Sokoloff

We propose the mean field dynamo model for the generation of strongest magnetic fields, , in a neutron star (NS) accounting for the chiral magnetic effect (…

astro-ph.HE2019★ 18 cited

Non-linear diffusion of cosmic rays escaping from supernova remnants: Cold partially neutral atomic and molecular phases

L. Brahimi, A. Marcowith, V. S. Ptuskin

We aim to elucidate cosmic ray (CR) propagation in the weakly ionized environments of supernova remnants (SNRs) basing our analysis on the cosmic ray cloud (CRC) model developed by…

astro-ph.HE2019

Generation of strong magnetic fields in old neutron stars accounting for continuous chiral magnetic effect

Maxim Dvornikov, V. B. Semikoz, D. D. Sokoloff

We suggest a new mean field dynamo model in anomalous MagnetoHydroDynamics (AMHD) accounting for the mean spin (polarization) of the magnetized chiral (ultrarelativistic) plasma of…

astro-ph.HE2019★ 5 cited

Permanent mean spin source of the chiral magnetic effect in neutron stars

Maxim Dvornikov, Victor B. Semikoz

We suggest the generalization of the Anomalous Magneto-Hydro-Dynamics (AMHD) in the chiral plasma of a neutron star (NS) accounting for the mean spin in the ultrarelativistic degen…

astro-ph.HE2019★ 54 cited

Non-linear diffusion of cosmic rays escaping from supernova remnants - II. Hot ionized media

L. Nava, S. Recchia, S. Gabici +3

We study the problem of the escape and transport of Cosmic-Rays (CR) from a source embedded in a fully ionised, hot phase of the interstellar medium (HIM). In particular, we model…

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…

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.HE2017★ 25 cited

Cosmic ray acceleration in magnetic circumstellar bubbles

V. N. Zirakashvili, V. S. Ptuskin

We consider the diffusive shock acceleration in interstellar bubbles created by powerful stellar winds of supernova progenitors. Under the moderate stellar wind magnetization the b…

astro-ph.HE2017★ 10 cited

Nonlinear approach to the entrainment matrix of superfluid nucleon mixture at zero temperature

Lev B. Leinson

The superfluid drag effect, in hydrodynamics of pulsating neutron stars, is conventionally described with the aid of the entrainment matrix relating the mass currents with the velo…

astro-ph.HE2017★ 6 cited

Relaxation of the chiral chemical potential in the dense matter of a neutron star

Maxim Dvornikov

A model of the generation of a magnetic field in a neutron star is developed, based on an instability of the magnetic field caused by the electroweak interaction between electrons…

astro-ph.HE2016★ 6 cited

Magnetic fields in turbulent quark matter and magnetar bursts

Maxim Dvornikov

We analyze the magnetic field evolution in dense quark matter with unbroken chiral symmetry, which can be found inside quark and hybrid stars. The magnetic field evolves owing to t…

astro-ph.HE2016★ 103 cited

Non-linear diffusion of cosmic rays escaping from supernova remnants - I. The effect of neutrals

Lara Nava, Stefano Gabici, Alexandre Marcowith +2

Supernova remnants are believed to be the main sources of galactic Cosmic Rays (CR). Within this framework, particles are accelerated at supernova remnant shocks and then released…

astro-ph.HE2015★ 70 cited

Type IIn supernovae as sources of high energy astrophysical neutrinos

V. N. Zirakashvili, V. S. Ptuskin

It is shown that high-energy astrophysical neutrinos observed in the IceCube experiment can be produced by protons accelerated in extragalactic Type IIn supernova remnants by shock…