Astronomy and Astrophysics – Astronomy
Scientific paper
May 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997mnras.287...51c&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Volume 287, Issue 1, pp. 51-56.
Astronomy and Astrophysics
Astronomy
64
Convection, Methods: Data Analysis, Sun: Atmosphere, Sun: Oscillations
Scientific paper
We use low-degree p-mode data, collected in integrated sunlight by the Birmingham Solar-Oscillations Network (BiSON), to derive the distribution of the observed strengths of the solar oscillations. We demonstrate that certain features of the observations cannot be explained by a model of the oscillations that is based upon a stochastically forced, damped harmonic oscillator. The solution of the equation of motion of the oscillator, as derived by the use of the Laplace transform, is presented, and its application to the simulation of real p-mode data, in the form of a coded algorithm, is discussed. A variety of tests are applied - both in the time and in the frequency domains - to artificially generated time series. These confirm that the model serves both as a useful diagnostic tool and for providing additional insight into the p-mode excitation and damping problem.
Chaplin William J.
Elsworth Yvonne
Howe Rachel
Isaak George R.
McLeod Clive P.
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