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Evolution of solar-type activity: acoustic and magnetic energy generation and propagation in \(\beta \) Hydri (G2 IV)

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Abstract

We examine the acoustic and magnetic energy generation and propagation in \(\beta \) Hydri (G2 IV). The underlying motivation for this work is based on the solar, stellar, and galactic relevance of \(\beta \) Hyi (a star in the Southern hemisphere), which is readily understood as a prime example and proxy of the future Sun – thus allowing assessments and analyses of the secular decay of solar activity. Regarding the magnetic energy generation, we consider longitudinal flux tube waves. We also assess acoustic waves. For the acoustic wave energy flux, the difference between the results obtained for \(\beta \) Hyi and the Sun is significantly smaller than typically attained for main-sequence stars, which is largely due to the gravity-dependence of the acoustic energy generation. Furthermore, we study the height-dependent behavior of the magnetic energy flux for different magnetic filling factors corresponding to different flux tube spreadings. Finally, we comment on possible directions of future research.

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Data Availability

The data that support the findings of this study are available from D.E.F. upon reasonable request.

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Acknowledgements

This work has been supported in part by the Faculty of Engineering, Izmir University of Economics as well as the Department of Physics, University of Texas at Arlington. Furthermore, we are grateful to M. Sosebee (UTA, Dep. of Physics) for his assistance with computer graphics.

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Authors and Affiliations

  1. Faculty of Engineering, Izmir University of Economics, 35330, Izmir, Turkey

    Diaa E. Fawzy

  2. Department of Physics, University of Texas at Arlington, Box 19059, Arlington, TX, 76019, USA

    Manfred Cuntz

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  1. Diaa E. Fawzy
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  2. Manfred Cuntz
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D.E.F. pursued the calculations and prepared the figures. M.C. has been the main contributor to the text.

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Correspondence to Manfred Cuntz.

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Fawzy, D.E., Cuntz, M. Evolution of solar-type activity: acoustic and magnetic energy generation and propagation in \(\beta \) Hydri (G2 IV). Astrophys Space Sci 368, 1 (2023). https://doi.org/10.1007/s10509-022-04158-y

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