YAOPBM—II: extension to higher degrees and to shorter time series

Details YAOPBM—II: extension to higher degrees and to shorter time series YAOPBM—II: extension to higher degrees and to shorter time series

Oct 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008jphcs.118a2082k&link_type=abstract

Journal of Physics: Conference Series, Volume 118, Issue 1, pp. 012082 (2008).

Physics

3

Scientific paper

In 2005, I presented a new fitting methodology (Yet AnOther Peak Bagging Method -YAOPBM), derived for very-long time series (2088-day-long) and applied it to low degree modes, ι <= 25. That very-long time series was also sub-divided into shorter segments (728-day-long) that were each fitted over the same range of degrees, to estimate changes with solar activity levels.
I present here the extension of this method in several 'directions': a) to substantially higher degrees (ι <= 125); b) to shorter time series (364- and 182-day-long); and c) to additional 728-day-long segments, covering now some 10 years of observations.
I discuss issues with the fitting, namely the leakage matrix, and the f- and p1 mode at very low frequencies, and I present some of the characteristics of the observed temporal changes.

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