Photospheric layers of sunspots and pores

Details Photospheric layers of sunspots and pores Photospheric layers of sunspots and pores

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.506..381s&link_type=abstract

In: Solar variability: from core to outer frontiers. The 10th European Solar Physics Meeting, 9 - 14 September 2002, Prague, Cze

Physics

1

Sunspots: Solar Photosphere, Solar Pores

Scientific paper

Sunspots and pores appear as a consequence of interactions between strong magnetic fields and moving plasma. A wide variety of small-scale features, presumably of convective origin, are observed in photospheric layers of sunspots and pores: Umbral dots, light bridges, penumbral filaments, and penumbral grains. Each type of features has specific morphological, photometric, spectral, and kinematic characteristics due to a broad range of magnetic field strengths and inclinations in umbrae and penumbrae. Spots and pores modify velocity fields in adjacent photosphere and subphotospheric layers. Recent high-resolution spectral, broad-band, and helioseismic observations of the structrure, dynamics, and magnetic fields of sunspots and pores, together with theoretical interpretations, are discussed in this review.

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