Acoustic power absorption and enhancement generated by slow and fast MHD waves

Details Acoustic power absorption and enhancement generated by slow and fast MHD waves Acoustic power absorption and enhancement generated by slow and fast MHD waves

2010-04-19

arxiv.org/abs/1004.3151v2

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

Accepted for publication in A&A. 10 pages, 9 figures.

Scientific paper

We used long duration, high quality, unresolved (Sun-as-a star) observations collected by the ground based network BiSON and by the instruments GOLF and VIRGO on board the ESA/NASA SOHO satellite to search for solar-cycle-related changes in mode characteristics in velocity and continuum intensity for the frequency range between 2.5mHz < nu < 6.8mHz. Over the ascending phase of solar cycle 23 we found a suppression in the p-mode amplitudes both in the velocity and intensity data between 2.5mHz

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