The detection of the S-component sunspot source in the initial stage of active-region development

Details The detection of the S-component sunspot source in the initial stage of active-region development The detection of the S-component sunspot source in the initial stage of active-region development

Jul 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993angeo..11..614n&link_type=abstract

Annales Geophysicae (ISSN 0992-7689), vol. 11, no. 7, p. 614-618.

Physics

2

Photosphere, Polarized Radiation, Solar Activity, Sunspots, Circular Polarization, Spatial Distribution

Scientific paper

It is shown that the polarized emission of sunspot sources of the S-component is produced when pores reach 4-5 arcsec in diameter. The appearance of pores and their development to 4-5 arcsec is accompanied by an increase in radio flux from -0.1 sfu to -0.5-0.7 solar flux units (sfu). The increase in radio flux proceeds in 'steps' which last for 10-20 minutes. During this interval the flux increases by 0.2-0.3 sfu. The radio flux remains virtually unchanged during several hours between the 'step-like' increases in radio flux.

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