Abstract
RELATIVE positions of type I sources and the associated continuum have been measured from observations of several noise storms at 169 MHz. During a given storm the positions of the type I events in the corona are all very nearly the same, and therefore the source of excitation of these events is very localized. For a given storm, more than one source of excitation may exist. The measurements also suggest certain systematic motions of the source of excitation. This letter is based on a study of ten noise storms. The observing period for each storm varied between 20 min and 1 h 30 min, and the continuum flux of the noise storms was between 1 and 5 × 10−22 W m−2 Hz−1. The examples considered correspond in general to only one centre of continuum emission visible on the interferometer during the entire observation.
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References
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Iscovici, I., Martres, M. J., and Michard, R., Solar Physics, 4 (1968).
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DAIGNE, G. Structure and Movement of Solar Noise Storms. Nature 220, 567–568 (1968). https://doi.org/10.1038/220567a0
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DOI: https://doi.org/10.1038/220567a0
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