Observations of quiet solar features with the SSRT and NoRH

Details Observations of quiet solar features with the SSRT and NoRH Observations of quiet solar features with the SSRT and NoRH

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006spnr.conf..101g&link_type=abstract

Solar Physics with the Nobeyama Radioheliograph, Proceedings of Nobeyama Symposium 2004, held in Kiyosato, Japan, October 26- 29

Physics

1

Scientific paper

We demonstrate observations of such well-known relatively quiet solar features as filaments & prominences, coronal holes, bright points, and arcades with two radioheliographs, SSRT at 5.7 GHz and NoRH at 17 GHz. Simultaneous microwave observations with the two radioheliographs are promising and fruitful due to overlapping observational daytimes and three times different frequencies. Last circumstance determines significantly different coronal contribution at those frequencies, which governs dissimilar appearance of coronal features in images produced by the NoRH and SSRT. The emphasis is made on SSRT observations, which are not yet well known. We overview some results obtained with the two radioheliographs and discuss new opportunities of radioheliographic observations. Microwave observations are also compared with magnetograms. Only observations at several radio frequencies assure correct estimates of the magnetic field.

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