Search for dissertations about: "Origin of solar surface activity and sunspots"

Found 2 swedish dissertations containing the words Origin of solar surface activity and sunspots.

2. 1. Origin of solar surface activity and sunspots

   Author : SARAH JABBARI; AXEL BRANDENBURG; Vasilis Archontis; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Sun-Solar activity-Sunspots; teoretisk astrofysik; Theoretical Astrophysics;

   Abstract : In the last few years, there has been significant progress in the development of a new model for explaining magnetic flux concentrations, by invoking the negative effective magnetic pressure instability (NEMPI) in a highly stratified turbulent plasma. According to this model, the suppression of the turbulent pressure by a large-scale magnetic field leads to a negative contribution of turbulence to the effective magnetic pressure (the sum of non-turbulent and turbulent contributions). READ MORE

4. 2. Origin of solar surface activity and sunspots

   Author : Sarah Jabbari; Axel Brandenburg; Laurene Jouve; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Magneto-hydrodynamics; solar physics; dynamo theory; Astronomy; astronomi;

   Abstract : Sunspots and active regions are two of the many manifestations of the solar magnetic field. This field plays an important role in causing phenomena such as coronal mass ejections, flares, and coronal heating. Therefore, it is important to study the origin of sunspots and active regions and determine the underlying mechanism which creates them. READ MORE