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Relation between solar narrow-band decimetre-wave bursts and associated X-ray bursts

Nature volume 321, pages 421–423 (1986)Cite this article

Abstract

Theoretical models have been proposed, stimulated by a successful account of the jovian decametric radiation1, for a maser mechanism, or a normal relativistic cyclotron resonance mechanism, operating in solar flares, and for transport of energy across magnetic fields to the electron gas by maser-amplified radio waves2. Much effort has been directed towards observations of solar-flare radio spike bursts3–8. Here we compare solar narrow-band decimetre-wave spike bursts with corresponding X-ray events for 25 solar flares. We find that decimetre spike bursts are 102–103 times stronger than normal impulsive microwave bursts for the same observed amount of hard X-ray emission. This feature, along with the observation of 100% circular polarization, strongly supports a maser origin for the decimetre spike bursts.

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Authors and Affiliations

  1. Toyokawa Observatory, Nagoya University, Toyokawa, 442, Japan

    Shinzo Enome

  2. Code 682, NASA Goddard Space Flight Center, Greenbelt, Maryland, 20771, USA

    Larry E. Orwig

Authors
  1. Shinzo Enome
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  2. Larry E. Orwig
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Enome, S., Orwig, L. Relation between solar narrow-band decimetre-wave bursts and associated X-ray bursts. Nature 321, 421–423 (1986). https://doi.org/10.1038/321421a0

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