A devil in the detail: parameter cross-talk from the solar cycle and estimation of solar p-mode frequencies

CHAPLIN, W. J., JIMENEZ-REYES, S. J., EFF-DARWICH, A., ELSWORTH, Y. and NEW, R. (2008). A devil in the detail: parameter cross-talk from the solar cycle and estimation of solar p-mode frequencies. Monthly notices of the Royal Astronomical Society, 385 (3), 1605-1612.

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Link to published version:: https://doi.org/10.1111/j.1365-2966.2008.12942.x

Abstract

Frequencies, powers and damping rates of the solar p modes are all observed to vary over the 11-yr solar activity cycle. Here, we show that simultaneous variations in these parameters give rise to a subtle cross-talk effect, which we call the 'devil in the detail', that biases p-mode frequencies estimated from analysis of long power frequency spectra. We also show that the resonant peaks observed in the power frequency spectra show small distortions due to the effect. Most of our paper is devoted to a study of the effect for Sun-as-a-star observations of the low-l p modes. We show that for these data the significance of the effect is marginal. We also touch briefly on the likely l dependence of the effect, and discuss the implications of these results for solar structure inversions.

Item Type: Article
Research Institute, Centre or Group - Does NOT include content added after October 2018: Materials and Engineering Research Institute > Advanced Coatings and Composites Research Centre > Nanotechnology Centre for PVD Research
Identification Number: https://doi.org/10.1111/j.1365-2966.2008.12942.x
Page Range: 1605-1612
Depositing User: Ann Betterton
Date Deposited: 24 May 2010 13:01
Last Modified: 19 Mar 2021 01:00
URI: https://shura.shu.ac.uk/id/eprint/2064

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