Effects of cyclic fluctuations in meridional circulation using a low order dynamo model

Details Effects of cyclic fluctuations in meridional circulation using a low order dynamo model Effects of cyclic fluctuations in meridional circulation using a low order dynamo model

2012-02-14

arxiv.org/abs/1202.3014v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

5 pages, 4 figures. Accepted for publication in MNRAS, February 2012

Scientific paper

We develop and subsequently explore the solution space of a simple flux transport dynamo model that incorporates a time dependent large scale meridional circulation. Based on recent observations we prescribed an analytical form for the amplitude of this circulation and study its impact in the evolution of the magnetic field. We find that cyclic variations in the amplitude and frequency of the meridional flow affect the strength of the solar cycle. Variations in the amplitude of the fluctuations influence the shape of the solar cycle but are only relevant to the cycle's strength variations when they occur at a frequency different from or out of phase of the solar cycle's.

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