Magnetohydrodynamic turbulence in the solar convective zone as a source of oscillations and sunspots formation. Academic Article uri icon

abstract

  • Astron. Astrophys. 307, 293-309 (1996) ASTRONOIIVIY AND ASTROPHYSICS Magnetohydrodynamic turbulence in the solar convective zone as a source of oscillations and sunspots formation N. Kleeorin1 , M. Mond' , and I. Rogachevskii2 1 Department of Mechanical Engineering, Ben-Gurion University of Negev, POB 653, 84105 Beer-Sheva, Israel 2 The Racah Institute of Physics, The Hebrew University of Jerusalem, 91904 Jerusalem, Israel Received 1 8 July 1994 I Accepted 28 June 1995 Abstract. As was previously shown (Kleeorin et al. 1990; Kleeorin & Rogachevskii 1994a), small-scale magnetohydrodynamic (MHD) turbulence results in modification of the Ampere law, by significantly reducing the elasticity of the magnetic field lines. As a result, the `effective' magnetic pressure is reduced and may even reverse its sign. We show here that this modification can be related to a variety of phenomena observed in the Sun and in …

publication date

  • March 1, 1996