期刊
ASTROPHYSICAL JOURNAL LETTERS
卷 700, 期 2, 页码 L137-L140出版社
IOP PUBLISHING LTD
DOI: 10.1088/0004-637X/700/2/L137
关键词
instrumentation: interferometers; Sun: chromosphere; Sun: corona; Sun: radio radiation; techniques: image processing
We present radio images of the quiet Sun obtained with the Nancay Radioheliograph between 150 and 450 MHz, using the latest improvements in the instrument and in the data processing techniques. We emphasize new aspects of the corona observable in this frequency range, particularly the prominence of coronal holes, and discuss implications for future studies.
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