TY - JOUR
T1 - Peak asymmetry of solar p modes: a framework to explain the effects of the correlator noise from the acoustic source
AU - Chaplin, William
AU - Elsworth, Yvonne
AU - Toutain, Thierry
PY - 2006/10/1
Y1 - 2006/10/1
N2 - 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.
AB - 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.
KW - Sun : helioseismology
KW - methods : data analysis
KW - methods : statistical
UR - http://www.scopus.com/inward/record.url?scp=33748709653&partnerID=8YFLogxK
U2 - 10.1111/j.1365-2966.2006.10798.x
DO - 10.1111/j.1365-2966.2006.10798.x
M3 - Article
SN - 1365-2966
VL - 371
SP - 1731
EP - 1736
JO - Royal Astronomical Society. Monthly Notices
JF - Royal Astronomical Society. Monthly Notices
ER -