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Oscillatory behaviour in sunspot umbrae

Bibcode
1990Ap&SS.170..121A
DOI
10.1007/BF00652657
Aballe Villero, M. A.; Garcia de La Rosa, J. I.; Vazquez, M.; Marco, E.
Referencia bibliográfica

(IAU, European Regional Astronomy Meeting, 11th, La Laguna, Spain, July 3-8, 1989) Astrophysics and Space Science (ISSN 0004-640X), vol. 170, no. 1-2, Aug. 1990, p. 121-126. Research supported by CICYT.

Fecha de publicación:
8
1990
Número de autores
4
Número de autores del IAC
0
Número de citas
4
Número de citas referidas
4
Descripción
A set of series of spectra of high spectral resolution corresponding to the same umbra on several days, is used to study the oscillations related to evolution of the two main dark cores of it. Differences in the behavior of each core and an evolution in the power spectra not related with the external appearance of the spot are detected. A quite constant value of the ratio of power at five minutes over three minutes has been found.
Tipo
Sin árbitro
Oscilaciones solares
Manchas solares

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