Modelling the occurrence of grand minima in sun-like stars using a dynamo model

Vashishth, Vindya

doi:10.48550/arxiv.2212.01795

2022

DOI: 10.48550/arxiv.2212.01795

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Modelling the occurrence of grand minima in sun-like stars using a dynamo model

Vindya Vashishth¹

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2023

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Models for the long-term variations of solar activity

Karak

2023

Living Rev Sol Phys

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One obvious feature of the solar cycle is its variation from one cycle to another. In this article, we review the dynamo models for the long-term variations of the solar cycle. By long-term variations, we mean the cycle modulations beyond the 11-year periodicity and these include, the Gnevyshev–Ohl/Even–Odd rule, grand minima, grand maxima, Gleissberg cycle, and Suess cycles. After a brief review of the observed data, we present the dynamo models for the solar cycle. By carefully analyzing the dynamo models and the observed data, we identify the following broad causes for the modulation: (1) magnetic feedback on the flow, (2) stochastic forcing, and (3) time delays in various processes of the dynamo. To demonstrate each of these causes, we present the results from some illustrative models for the cycle modulations and discuss their strengths and weakness. We also discuss a few critical issues and their current trends. The article ends with a discussion of our current state of ignorance about comparing detailed features of the magnetic cycle and the large-scale velocity from the dynamo models with robust observations.

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Models for the long-term variations of solar activity

Karak

2023

Living Rev Sol Phys

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Modelling the occurrence of grand minima in sun-like stars using a dynamo model

Cited by 1 publication

References 0 publications

Models for the long-term variations of solar activity

Models for the long-term variations of solar activity

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