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Millisecond structures in solar radio emission close to 264 MHz

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Abstract

High-time resolution spectral measurements of solar radio emission close to 264 MHz are reported. Instrumental resolutions of the order of a few kHz in frequency and tenths of milliseconds in time were used to resolve the burst fine structure in the time-frequency plane. Fine structures, having narrow bandwidths and durations of some 5 to 30 ms, have been observed mostly in association with type I and type III bursts. These very short duration bursts have negative frequency drifts of about - 50 to- 60 MHz s-1. They can occur individually or in small groups where they sometimes display a quasi-periodicity of a few milliseconds.

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Author notes

  1. C. H. Barrow

    Present address: Code 601, NASA Goddard Space Flight Center, 20771, Greenbelt, MD, U.S.A.

  2. R. S. Flagg

    Present address: Pan American World Airways, MU 840, Bldg 989, 32925, Patrick AFB, FL, U.S.A.

Authors and Affiliations

  1. Institute for Astronomy, ETH., 8092, Zürich, Switzerland

    C. H. Barrow, R. S. Flagg & M. Perrenoud

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  1. C. H. Barrow
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  2. R. S. Flagg
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  3. M. Perrenoud
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Barrow, C.H., Flagg, R.S. & Perrenoud, M. Millisecond structures in solar radio emission close to 264 MHz. Sol Phys 90, 111–115 (1984). https://doi.org/10.1007/BF00153788

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