Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003a%26a...398..305c&link_type=abstract
Astronomy and Astrophysics, v.398, p.305-314 (2003)
Astronomy and Astrophysics
Astrophysics
20
Methods: Data Analysis, Sun: Oscillations
Scientific paper
We present a study of the impact of a ground-based, multi-station window function on estimates of the power and damping of low-l solar p modes extracted from fits to resonant structure in the frequency domain. The window functions come from six-site observations made by the Birmingham Solar-Oscillations Network (BiSON) over the 10-yr period beginning 1991 January. Two strategies were adopted. In the first, we used an 800-d time series of continuous observations made by the GOLF instrument on board the ESA/NASA SOHO satellite. These data were modulated by a variety of BiSON window functions, with fractional duty cycles ranging from ~ 0.4 to ~ 0.8, and the resulting series analyzed. In the second we generated artificial 10-yr time series and studied the effect on these of the complete BiSON window.
Chaplin William J.
Elsworth Yvonne
Isaak George R.
Miller Brek A.
New Roger
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