2011/09/22 by W. J. Chaplin, Chaplin, W. J.
Physics and Astronomy · #Astronomy and Astrophysical Research #Solar and Space Plasma Dynamics #Stellar, planetary, and galactic studies #astro-ph.SR
paper · pdf · doi:10.48550/arxiv.1109.4842
31 pages, 15 figures; to appear as a chapter in "Asteroseismology", Canary Islands Winter School of Astrophysics, Volume XXII, edited by Pere L. Palle, published by Cambridge University Press
arxiv created 2011/09/22 · arxiv updated 2011/09/23
My brief for the IAC Winter School was to cover observational results on helioseismology, flagging where possible implications of those results for the asteroseismic study of solar-type stars. My desire to make such links meant that I concentrated largely upon results for low angular-degree (low-l) solar p modes, in particular results derived from "Sun-as-a-star" observations (which are of course most instructive for the transfer of experience from helioseismology to asteroseismology). The lectures covered many aspects of helioseismology - modern helioseismology is a diverse field. In these notes, rather than discuss each aspect to a moderate level of detail, I have instead made the decision to concentrate upon one theme, that of "sounding" the solar activity cycle with helioseismology. I cover the topics from the lectures and I also include some new material, relating both to the lecture topics and other aspects I did not have time to cover. Implications for asteroseismology are developed and discussed throughout.