Published October 2008 | Version v1
Journal article

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

  • 1. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)

Description

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.

Availability note (English)

Available from http://dx.doi.org/10.1088/1742-6596/118/1/012082

Additional details

Publishing Information

Journal Title
Journal of Physics. Conference Series (Online)
Journal Volume
118
Journal Issue
1
Journal Page Range
[13 p.]
ISSN
1742-6596

Conference

Title
2. HELAS international conference on helioseismology, asteroseismology and MHD connections
Dates
20-24 Aug 2007
Place
Goettingen (Germany)

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
41036378
Subject category
S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ASTROPHYSICS; DATA ANALYSIS; OSCILLATION MODES; OSCILLATIONS; SOLAR ACTIVITY; TIME DEPENDENCE
Descriptors DEC
PHYSICS; STELLAR ACTIVITY