Publication
Title
Time series analysis with the VSAA method
Author
Abstract
Time series analysis is a common task in many scientific fields, and so it is in astronomy, too. Fourier Transform and Wavelet Analysis are usually applied to handle the majority of the cases. Even so, problems arise when the time series signal presents modulation in the frequency under inspection. The Variable Sine Algorithmic Analysis (VSAA) is a new method focused exactly on this type of signals. It is based on a single sine function with variable coefficients and it is powered by the simplex algorithm. In cases of phenomena triggered by a single mechanism − that Fourier Transform and Wavelet Analysis fail to describe practically and efficiently − VSAA provides a straightforward solution. The method has already been applied to orbital period changes and magnetic field variations of binary stars, as well as to the Blazhko effect of the pulsating RR Lyrae stars and to sunspot activity.
Language
English
Source (journal)
Communications in asteroseismology
Source (book)
JENAM 2008 Symposium N. 4: Asteroseismology and Stellar Evolution; 8 - 12 September, 2008, Vienna
Publication
2009
ISBN
978-3-7001-6625-2 [print]
978-3-7001-6695-5 [online]
Volume/pages
159 (2009) , p. 125-126
Full text (Publisher's DOI)
Full text (open access)
UAntwerpen
Publication type
Subject
External links
Record
Identification
Creation 14.05.2018
Last edited 12.10.2020