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Spectral Characteristics of a Coronal Oscillation with a Period of the Order of 10 MS

Published online by Cambridge University Press:  12 April 2016

Xia Zhiguo ,
Chen Jingying ,
Zheng Xiangmin  and
Ma Yuan
Xia Zhiguo
Affiliation:
Yunnan Observatory, Chinese Academy of Sciences, China
Chen Jingying
Affiliation:
Yunnan Observatory, Chinese Academy of Sciences, China
Zheng Xiangmin
Affiliation:
Yunnan Observatory, Chinese Academy of Sciences, China
Ma Yuan
Affiliation:
Yunnan Observatory, Chinese Academy of Sciences, China

Abstract

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A coronal oscillation with a changing period was observed with the acousto-optic radio spectrometer of Yunnan Observatory. The bandwidth of the oscillation was about 10 MHz. It accompanied radiation which lasted for about 500 ms. A corresponding burst was found on a radio spectrogram obtained at Weissenau, Germany. A 245 MHz burst was reported at the same time and we found a bright spot on the Hα film records of Yunnan Observatory. In this paper, we present a series of spectra of the oscillation at 10 ms intervals. In the spectra the oscillation appears in the form of a 3.5 MHz drift of radio flux with frequency.

Type
Session 5. Fields in the Chromosphere and Corona
Information
International Astronomical Union Colloquium , Volume 141: The Magnetic and Velocity Fields of Solar Active Regions , 1993 , pp. 283 - 286
Copyright
Copyright © Astronomical Society of the Pacific 1993

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