Formation of small-scale magnetic elements: surface mechanism

Details Formation of small-scale magnetic elements: surface mechanism Formation of small-scale magnetic elements: surface mechanism

May 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999kfnt...15e.387g&link_type=abstract

Kinematika i Fizika Nebesnykh Tel, vol.15, no.5, p. 387-397.

Computer Science

8

Magnetohydrodynamics (Mhd), Sun: Magnetic Fields, Sun: Granulation

Scientific paper

The first results of a two-dimensional MHD simulation of solar magnetogranulation are given. The medium was treated as compressible, gravitationally stratified, radiatively coupled, partially ionized, and turbulent. The evolution of magnetogranulation was simulated in course of 2 hours of hydrodynamic (solar) time. A surface (magnetic plume-like) mechanism which forms thin magnetic elements was found to exist. This sort of field formation occurs due to fragmentation of large-scale granules. Active role of such mechanism shows that the magnetogranulation not only concentrates and intensifies the global magnetic flux at the boundaries of convective cells but also forms nearly vertical compact magnetic tubes by involving the weak horizontal field of the photosphere, which in general may be of local nature.

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