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https://doi.org/10.21256/zhaw-25623| Publikationstyp: | Beitrag in wissenschaftlicher Zeitschrift |
| Art der Begutachtung: | Peer review (Publikation) |
| Titel: | Can stochastic resonance explain recurrence of Grand Minima? |
| Autor/-in: | Albert, Carlo Ferriz-Mas, Antonio Gaia, Filippo Ulzega, Simone |
| et. al: | No |
| DOI: | 10.3847/2041-8213/ac0fd6 10.21256/zhaw-25623 |
| Erschienen in: | The Astrophysical Journal Letters |
| Band(Heft): | 916 |
| Heft: | 2 |
| Seite(n): | L9 |
| Erscheinungsdatum: | 2021 |
| Verlag / Hrsg. Institution: | IOP Publishing |
| ISSN: | 2041-8205 2041-8213 |
| Sprache: | Englisch |
| Schlagwörter: | Solar physics; Stochastic resonance; Stochastic model; Stochastic delayed ODE |
| Fachgebiet (DDC): | 500: Naturwissenschaften 510: Mathematik |
| Zusammenfassung: | The amplitude of the 11 yr solar cycle is well known to be subject to long-term modulation, including sustained periods of very low activity known as Grand Minima. Stable long-period cycles found in proxies of solar activity have given new momentum to the debate about a possible influence of the tiny planetary tidal forcing. Here, we study the solar cycle by means of a simple zero-dimensional dynamo model, which includes a delay caused by meridional circulation as well as a quenching of the α-effect at toroidal magnetic fields exceeding an upper threshold. Fitting this model to the sunspot record, we find a set of parameters close to the bifurcation point at which two stable oscillatory modes emerge. One mode is a limit cycle resembling normal solar activity including a characteristic kink in the decaying limb of the cycle. The other mode is a weak sub-threshold cycle that could be interpreted as Grand Minimum activity. Adding noise to the model, we show that it exhibits Stochastic Resonance, which means that a weak external modulation can toss the dynamo back and forth between these two modes, whereby the periodicities of the modulation get strongly amplified. |
| URI: | https://digitalcollection.zhaw.ch/handle/11475/25623 |
| Volltext Version: | Publizierte Version |
| Lizenz (gemäss Verlagsvertrag): | CC BY 4.0: Namensnennung 4.0 International |
| Departement: | Life Sciences und Facility Management |
| Organisationseinheit: | Institut für Computational Life Sciences (ICLS) |
| Publiziert im Rahmen des ZHAW-Projekts: | BISTOM - Bayesian Inference with Stochastic Models |
| Enthalten in den Sammlungen: | Publikationen Life Sciences und Facility Management |
Dateien zu dieser Ressource:
| Datei | Beschreibung | Größe | Format | |
|---|---|---|---|---|
| 2021_Albert-etal_Stochastic-resonance-recurrence-grand-minima.pdf | 1.16 MB | Adobe PDF |  Öffnen/Anzeigen |
Zur Langanzeige
Albert, C., Ferriz-Mas, A., Gaia, F., & Ulzega, S. (2021). Can stochastic resonance explain recurrence of Grand Minima? The Astrophysical Journal Letters, 916(2), L9. https://doi.org/10.3847/2041-8213/ac0fd6
Albert, C. et al. (2021) ‘Can stochastic resonance explain recurrence of Grand Minima?’, The Astrophysical Journal Letters, 916(2), p. L9. Available at: https://doi.org/10.3847/2041-8213/ac0fd6.
C. Albert, A. Ferriz-Mas, F. Gaia, and S. Ulzega, “Can stochastic resonance explain recurrence of Grand Minima?,” The Astrophysical Journal Letters, vol. 916, no. 2, p. L9, 2021, doi: 10.3847/2041-8213/ac0fd6.
ALBERT, Carlo, Antonio FERRIZ-MAS, Filippo GAIA und Simone ULZEGA, 2021. Can stochastic resonance explain recurrence of Grand Minima? The Astrophysical Journal Letters. 2021. Bd. 916, Nr. 2, S. L9. DOI 10.3847/2041-8213/ac0fd6
Albert, Carlo, Antonio Ferriz-Mas, Filippo Gaia, and Simone Ulzega. 2021. “Can Stochastic Resonance Explain Recurrence of Grand Minima?” The Astrophysical Journal Letters 916 (2): L9. https://doi.org/10.3847/2041-8213/ac0fd6.
Albert, Carlo, et al. “Can Stochastic Resonance Explain Recurrence of Grand Minima?” The Astrophysical Journal Letters, vol. 916, no. 2, 2021, p. L9, https://doi.org/10.3847/2041-8213/ac0fd6.
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