Journal Article

Peak asymmetry of solar p modes: a framework to explain the effects of the correlated noise from the acoustic source

T. Toutain, Y. Elsworth and W. J. Chaplin

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 371, issue 4, pages 1731-1736
Published in print October 2006 | ISSN: 0035-8711
Published online August 2006 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2006.10798.x
Peak asymmetry of solar p modes: a framework to explain the effects of the correlated noise from the acoustic source

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It is well known that in the power spectrum solar p modes have asymmetric profiles, which depart from a Lorentzian shape. We present a framework to explain the contribution of correlated background noise, from the acoustic source, to this asymmetry. An important prediction is that observed peak asymmetry may differ depending on the way the p-mode observations are made, and on how the data are prepared. Furthermore, if valid, the proposed framework may provide the basis for separating the contribution of the correlated noise from that of the source location and properties.

Keywords: methods: data analysis; methods: statistical; Sun: helioseismology

Journal Article.  3718 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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