Together with the main 11-year cycle, solar activity also displays intracycle pe- riodicities. A simple nonlinear model that describes the 11-year solar cycle with subperi- odicities can be derived from the usual α – ω dynamo theory in the form of a Van der Pol equation with a forcing term. In this paper the results obtained from the Van der Pol oscilla- tor describing the amplitude modulations and periodicities observed from the data set of the global daily coronal emission of the Fe XIV line at 530.3 nm are presented.

A simple model to describe the solar cycle periodicities below 11 years

CARBONE, Vincenzo
2008-01-01

Abstract

Together with the main 11-year cycle, solar activity also displays intracycle pe- riodicities. A simple nonlinear model that describes the 11-year solar cycle with subperi- odicities can be derived from the usual α – ω dynamo theory in the form of a Van der Pol equation with a forcing term. In this paper the results obtained from the Van der Pol oscilla- tor describing the amplitude modulations and periodicities observed from the data set of the global daily coronal emission of the Fe XIV line at 530.3 nm are presented.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11770/122570
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 2
  • ???jsp.display-item.citation.isi??? 2
social impact