A Helioseismic Comparison of the Solar Minima Preceding Cycles 23 and 24

Details A Helioseismic Comparison of the Solar Minima Preceding Cycles 23 and 24 A Helioseismic Comparison of the Solar Minima Preceding Cycles 23 and 24

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009spd....40.2401h&link_type=abstract

American Astronomical Society, SPD meeting #40, #24.01; Bulletin of the American Astronomical Society, Vol. 41, p.860

Astronomy and Astrophysics

Astronomy

Scientific paper

The current solar minimum is clearly unusual in a variety of ways, including length, solar wind pressure, cosmic ray flux, and marked absence of sunspots. This talk will compare the current minimum with the previous one in terms of its helioseismic and subsurface flow characteristics. The helioseismic characteristics are primarily activity-related changes in the frequencies, amplitudes and lifetimes. The relevant flows are the torsional oscillation, meridional flow, subsurface vorticity, and the subsurface rotation rate.

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