2016/01/25 by Z. Kolláth, Kolláth, Zoltán
Biochemistry, Genetics and Molecular Biology · Earth and Planetary Sciences · #FOS: Physical sciences #Geomagnetism and Paleomagnetism Studies #Ocean Waves and Remote Sensing #Oceanographic and Atmospheric Processes #Solar and Stellar Astrophysics (astro-ph.SR)
paper · doi:10.48550/arxiv.1601.06625
openalex publication_date 2016/01/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Hydrodynamic models of RR Lyrae pulsation display a very rich behaviour. Contrary to earlier expectations, high order resonances play a crucial role in the nonlinear dynamics representing the interacting modes. Chaotic attractors can be found at different time scales: both in the pulsation itself and in the amplitude equations shaping the possible modulation of the oscillations. Although there is no one-to-one connection between the nonlinear features found in the numerical models and the observed behaviour, the richness of the found phenomena suggests that the interaction of modes should be taken seriously in the study of the still unsolved puzzle of Blazhko effect. One of the main lessons of this complex system is that we should rethink the simple interpretation of the observed effect of resonances.