Transport of charged particles propagating in turbulent magnetic fields as a red-noise process
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F21%3A00555674" target="_blank" >RIV/68378271:_____/21:00555674 - isvavai.cz</a>
Result on the web
<a href="https://iopscience.iop.org/article/10.3847/1538-4357/ac1341/pdf" target="_blank" >https://iopscience.iop.org/article/10.3847/1538-4357/ac1341/pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3847/1538-4357/ac1341" target="_blank" >10.3847/1538-4357/ac1341</a>
Alternative languages
Result language
angličtina
Original language name
Transport of charged particles propagating in turbulent magnetic fields as a red-noise process
Original language description
The transport of charged particles in various astrophysical environments permeated by magnetic fields is described in terms of a diffusion process, which relies on diffusion-tensor parameters generally inferred from Monte-Carlo simulations. In this paper, a theoretical derivation of the diffusion coefficient in the case of a purely turbulent magnetic field is presented. The approach is based on a red-noise approximation to model the 2-pt correlation function of the magnetic field experienced by the particles between two successive times. This approach is shown to describe the regime in which the Larmor radius of the particles is in resonance with the wavelength power spectrum of the turbulence (gyro-resonant regime), extending hence previous results applying to the high-rigidity regime in which the Larmor radius is greater than the larger wavelength of the turbulence.n
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
—
Continuities
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Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Astrophysical Journal
ISSN
0004-637X
e-ISSN
1538-4357
Volume of the periodical
920
Issue of the periodical within the volume
2
Country of publishing house
GB - UNITED KINGDOM
Number of pages
8
Pages from-to
87
UT code for WoS article
000708201100001
EID of the result in the Scopus database
2-s2.0-85118507373