Abstract
At the 1980 total solar eclipse, we searched for high-frequency (0.1–2 Hz) oscillations in the intensity of the 5303-Å coronal green line, as a test of predictions of theories of coronal heating via magnetohydrodynamic waves. Portions of the image 2.5- or 5-arc sec across were fed to cooled photomultipliers using fiber-optic probes. We detected excess power in Fourier transforms of the data for the region between 0.5 and 2 Hz at the level of 1% or 2% of the incident power. Such oscillations could be associated with Alfvén waves that are trapped on loops a few thousand kilometers long or with fast waves that are trapped on loops a few thousand kilometers in diameter. Additional observations at the 1983 eclipse are planned to resolve atmospheric and instrumental contributions.
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References
Edwin, P. M. and Roberts, B.: 1982, Solar Phys. 76, 239.
Gordon, B. E. and Hollweg, J.: 1983, Astrophys. J. 266, 373.
Hollweg, J.: 1979a, Bull. Am. Astron. Soc. 11, 409.
Hollweg, J.: 1979b, private communication.
Hollweg, J.: 1981, Solar Phys. 70, 25.
Hollweg, J.: 1982, Astrophys. J. 254, 806.
Ionson, J.: 1978, Astrophys. J. 226, 650.
Ionson, J.: 1979, private communication.
Ionson, J.: 1982, Astrophys. J. 254, 318.
Kuperus, M., Ionson, J., and Spicer, D. S.: 1981, Ann. Rev. Astron. Astrophys. 19, 7.
Pasachoff, J. M. and Landman, D. A.: 1981, Bull. Astron. Soc. India 8, 137.
Pasachoff, J. M., Landman, D. A., and Schierer, J. P.: 1981, Bull. Am. Astron. Soc. 12, 793.
Žugžda, Y. D. and Locāns, V.: 1982, Solar Phys. 76, 77.
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Pasachoff, J.M., Landman, D.A. High-frequency coronal oscillations and coronal heating. Sol Phys 90, 325–330 (1984). https://doi.org/10.1007/BF00173960
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DOI: https://doi.org/10.1007/BF00173960