The development and structure of bright active regions at 2.8 CM

Details The development and structure of bright active regions at 2.8 CM The development and structure of bright active regions at 2.8 CM

Feb 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978soph...56..335f&link_type=abstract

Solar Physics, vol. 56, Feb. 1978, p. 335-350.

Physics

8

Brightness Temperature, Radio Observation, Solar Activity, Solar Flux Density, Solar Radio Emission, Centimeter Waves, Solar Rotation, Sunspots

Scientific paper

The development of the bright components of three intense active centers during transit across the solar disk is studied on different time scales by means of high-resolution observations at 2.8 cm. Each center, observed for a period of 8-9 days, contains at least one bright core with a brightness temperature exceeding 1,000,000 K and a size smaller than 20 sec. While no short-period variation of the bright components was detected, flux density variation of about 30-40% per day with a maximum variation of 50% per day was found. The height and rotation velocity of the bright components are discussed.

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