Abstract
Small-scale magnetic field is suggested as a mechanism for magnetic field self-excitation in accretion discs. Main features of small-scale dynamo action are compared with that one for the conventional large-scale dynamo to learn that the small-scale dynamo can solve the problem motivated the search for mechanisms for magnetic field self-excitation in accretion discs.
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ACKNOWLEDGMENTS
Fruitful discussion with N.I. Shakura is acknowledged.
Funding
The support from the Basis Foundation (project no. 21-1-1-4-1) is acknowledged. Financial support of the Ministry of Science and Higher Education of the Russian Federation (agreements 075-15-2019-1621, 20-02-00150, and 19-52-530045) is acknowledged.
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Paper presented at the Fourth Zeldovich meeting, an international conference in honor of Ya.B. Zeldovich held in Minsk, Belarus, on September 7–11, 2020. Published by the recommendation of the special editors: S.Ya. Kilin, R. Ruffini, and G.V. Vereshchagin.
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Sokoloff, D.D. Small-Scale Dynamo in Accretion Discs. Astron. Rep. 65, 1054–1056 (2021). https://doi.org/10.1134/S1063772921100371
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DOI: https://doi.org/10.1134/S1063772921100371