Splitting of the low ℓ solar p modes
نویسندگان
چکیده
منابع مشابه
Solar p-modes: possible source of excitation and frequency splitting
A new possible source of solar 5-minute oscillation is supposed. Weak periodic differential rotation (see Zaqarashvili 1997, hereafter paper I) generates exponentially growing slow magnetosonic waves with period of 22 yr in the radiative interior. The waves propagating with ±450 angles to the radial direction have maximal growth rates. The ideal MHD equations for slow and fast waves are linearl...
متن کاملObservation of solar low - l p - modes by the CORONAS – DIFOS experiment
TheCORONAS satellite, launched on 1994March 2, carried theDIFOS experiment to observe irradiance fluctuations due to global solar oscillations. The DIFOS experiment was working for almost 50 days near solar activity minimum. We present first results of the Fourier analysis of the full time series. The fine structure of the low-l p-modes is shown and fitted with Lorentzian line profiles. Results...
متن کاملSolar activity cycle frequency shifts of low-degree p-modes
We report on an extensive analysis of the low-degree p-mode frequency shifts over Solar Cycle n ̄ 22 (1984–1995) based on continuous data taken at the Observatorio del Teide (Tenerife). Aside from the known good correlation between frequency shifts and solar activity indices, we have also investigated on short and long time-scales correlations (from 2months to 1.5 years and from 1.5 to 11 years)...
متن کاملEXCITATION OF SOLAR p-MODES
We investigate the rates at which energy is supplied to individual p-modes as a function of their frequencies v and angular degrees t. The observationally determined rates are compared with those calculated on the hypothesis that the modes are stochastically excited by turbulent convection. The observationally determined excitation rate is assumed to be equal to the product of the mode's energy...
متن کاملSOLAR SEISMOLOGY. I. THE STABILITY OF THE SOLAR p-MODES*
We investi~ate the s~ability of the radialp-modes of the Sun by computing nonadiabatic eigenvalues and e1genfunc~ons for a solar envelope model which extends from an inner radius r ~ 0.3 J!..e out to an optical depth -r ~ 3 x I04 • Our calculations take into account in a crude fashion the re~ponse of.the convec?ve ~ux to the oscillation. The dynamical effect of turbulence m the convection zone ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 1988
ISSN: 0074-1809
DOI: 10.1017/s0074180900157651