Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.sao.ru/cats/~satr/RFSymp/abs/28_Riehokainen.ps Дата изменения: Mon Oct 9 11:14:24 2006 Дата индексирования: Tue Oct 2 10:27:18 2012 Кодировка: Поисковые слова: внешние планеты

MULTI­FREQUENCY OBSERVATIONS OF THE POLAR
RADIO STRUCTURES
A. Riehokainen 1 , A.G. Tlatov 2
1 Tuorla Observatory 21500, Piikkio, Finland;
2 Pulkovo Astronomical Observatory, St. Petersburg, Russia
alerie@utu.fi
In this work we present a comparison of the enhanced temperature regions (ETRs) in the
radio emission of the Sun with other manifestations of solar polar structures over some
days in 2003­2005. The radio observations at 37 GHz were made with the Metsahovi
Radio Telescope (Finland). We compared our radio data with di#erent SOHO/EIT and
SOHO/MDI images for the same periods. We also superposed the intensity contours of
the full­radio maps obtained in Metsahovi on the Meudon Spectroheliograph CaII(k3) and
H(alpha) images. We tried to find di#erence between ETRs inside and outside of coronal
holes. We find that the ETRs are clearly connected to brightness structures seen in the
CaII(k3)/H# and magnetic field sources seen in SOHO/MDI. Thus we can conclude that
ETRs have chromospheric origin.