منابع مشابه
Aspects of the solar tachocline
The splitting of the frequencies of p-modemultiplets enables information to be gained about the internal rotation of the sun. Such data have revealed a transition at the base of the convection zone from differential rotation similar to that observed at the surface to almost solid-body rotation in the radiative interior. This transition region, known as the tachocline, has been found to be relat...
متن کاملInfluence of the Tachocline on Solar Evolution
Recently helioseismic observations have revealed the presence of a shear layer at the base of the convective zone related to the transition from differential rotation in the convection zone to almost uniform rotation in the radiative interior, the tachocline. At present, this layer extends only over a few percent of the solar radius and no definitive explanations have been given for this thines...
متن کاملSeismic Observation of Solar Tachocline
Helioseismology has established the existence of a layer of strong gradients of angular velocity at the base of the solar convection zone. This layer (`tachocline') separates the convection zone exhibiting a strong latitudinal differential rotation from the radiative interior that rotates almost rigidly. Turbulence generated in the tachocline is likely to mix material in the upper radiative zon...
متن کاملMagnetic confinement of the solar tachocline
Context. We study the physics of the solar tachocline (i.e. the thin transition layer between differential rotation in the convection zone and quasi uniform rotation in the radiative interior), and related MHD instabilities. Aims. We have performed 3-D MHD simulations of the solar radiative interior to check whether a fossil magnetic field is able to prevent the spread of the tachocline. Method...
متن کاملMagnetic confinement of the solar tachocline
Two distinct classes of magnetic confinement models exist for the solar tachocline. The “slow tachocline” models are associated with a large-scale primordial field embedded in the radiative zone. The “fast tachocline” models are associated with an overlying dynamo field. I describe the results obtained in each case, their pros and cons, and compare them with existing solar observations. I concl...
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ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 2001
ISSN: 0074-1809
DOI: 10.1017/s0074180900219098