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Short-period pulsations observed simultaneously by X-ray and radio waves

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Abstract

From simultaneous high-time-resolution observations of solar X-rays from Hinotori and the millimeter waves at Itapetinga Radio Observatory in Brazil during a solar flare on November 4, 1981 at 1827 UT, short period (∼ 300 ms) pulsations have been detected in five time intervals of 2 s each. Both a cross-correlation analysis between X-rays and microwaves and a Fourier analysis were made to verify the significance of the quasi-periodic pulsations. The cross-correlation is significant but the pulsations could not be periodic oscillation.

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Authors and Affiliations

  1. Department of Astronomy, University of Tokyo, 113, Tokyo, Japan

    S. S. Degaonkar, T. Takakura & N. Nitta

  2. Instituto de Pesquisas Espaciais, C.P.515, 12200, Saõ José dos campos, SP, Brazil

    P. Kaufmann & J. E. R. Costa

  3. Tokyo Astronomical Observatory, University of Tokyo, Mitaka, 181, Tokyo, Japan

    K. Ohki

Authors
  1. S. S. Degaonkar
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  2. T. Takakura
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  3. P. Kaufmann
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  4. J. E. R. Costa
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  5. K. Ohki
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  6. N. Nitta
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on leave of absence from Physical Res. Lab., Ahmedabad, India

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Degaonkar, S.S., Takakura, T., Kaufmann, P. et al. Short-period pulsations observed simultaneously by X-ray and radio waves. Sol Phys 86, 237–238 (1983). https://doi.org/10.1007/BF00157194

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  • DOI: https://doi.org/10.1007/BF00157194

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