THE OBSERVATION AND SIMULATION OF STOCHASTICALLY EXCITED SOLAR P-MODE

We use low-degree p-mode data, collected in integrated sunlight by the Birmingham Solar-Oscillations Network (BiSON), to derive the distribu tion of the observed strengths of the solar oscillations. We demonstra te 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 pre sented, 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 ap plied - both in the time and in the frequency domains - to artificiall y 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.