Zobrazeno 1 - 10
of 210
pro vyhledávání: '"Dogiel, V."'
Publikováno v:
A&A, 686 (2024) A165
We employed our recent model of the cosmic-ray (CR) halo to compute the Galactic spectra of stable and unstable secondary nuclei. In this model, confinement of the Galactic CRs is entirely determined by the self-generated Alfvenic turbulence whose sp
Externí odkaz:
http://arxiv.org/abs/2309.04772
We present a nonlinear model of self-consistent Galactic halo, where the processes of cosmic ray (CR) propagation and excitation/damping of MHD waves are included. The MHD-turbulence, which prevents CR escape from the Galaxy, is entirely generated by
Externí odkaz:
http://arxiv.org/abs/2209.12302
We analyze properties of non-thermal radio emission from the Central Molecular Zone (CMZ) and individual molecular clouds, and argue that the observed features can be interpreted in the framework of our recent theory of self-modulation of cosmic rays
Externí odkaz:
http://arxiv.org/abs/2108.07559
A self-consistent model of a one-dimensional cosmic-ray (CR) halo around the Galactic disk is formulated with the restriction to a minimum number of free parameters. It is demonstrated that the turbulent cascade of MHD waves does not necessarily play
Externí odkaz:
http://arxiv.org/abs/2009.08799
Capture and tidal disruption of stars by the supermassive black hole in the Galactic center (GC) should occur regularly. The energy released and dissipated by this processes will affect both the ambient environment of the GC and the Galactic halo. A
Externí odkaz:
http://arxiv.org/abs/1904.03958
Akademický článek
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We analyze the processes governing cosmic-ray (CR) penetration into molecular clouds and the resulting generation of gamma-ray emission. The density of CRs inside a cloud is depleted at lower energies due to the self-excited MHD turbulence. The deple
Externí odkaz:
http://arxiv.org/abs/1810.05821
Molecular gas in Arches cloud located near the Arches cluster is one of the emitters of K-$\alpha$ line of neutral iron and X-ray continuum in the Galactic center (GC). Similarly to the cloud Sgr B2, another well-known emitter of the iron line in the
Externí odkaz:
http://arxiv.org/abs/1807.00526
A flux of cosmic rays (CRs) propagating through a diffuse ionized gas can excite MHD waves, thus generating magnetic disturbances. We propose a generic model of CR penetration into molecular clouds through their diffuse envelopes, and identify the le
Externí odkaz:
http://arxiv.org/abs/1802.02612
Autor:
Dogiel, V. A., Cheng, K. S., Chernyshov, D. O., Erlykin, A. D., Ko, C. -M., Wolfendale, A. W.
We give a short review of processes of stochastic acceleration in the Galaxy. We discuss: how to estimate correctly the number of accelerated particles, and at which condition the stochastic mechanism is able to generate power-law nonthermal spectra.
Externí odkaz:
http://arxiv.org/abs/1701.05481