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.
Bibliographical reference

(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.

Advertised on:
8
1990
Number of authors
4
IAC number of authors
0
Citations
4
Refereed citations
4
Description
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.
Type
Non-refereed
Solar oscillations
Sunspots

It may interest you

  • Non-refereed
    The molecular gas perspective on the growth and death of H emitters in the Spiderweb protocluster at Alpha z=2.16
    Galaxy clusters at low redshift are dominated by massive quiescent galaxies hosting stellar populations 10 Gyrs old, indicating that they were formed in the early universe when clusters were still in the process of being assembled (i.e., protoclusters). The rapid growth of galaxies within protoclusters is driven by the efficient transformation of
    Martinez, J. M. P.

    Advertised on:

    3
    2024
    Bibcode
    2024aecc.conf...12M
    Citations
    0
  • Non-refereed
    Deep HST Imaging Favors the Bulgeless Edge-on Galaxy Explanation for the Hypothetical Stellar Wake Created by a Runaway Supermassive Black Hole
    A long linear structure recently discovered could be the stellar wake produced by the passage of a runaway supermassive black hole (SMBH) or, alternatively, a bulgeless edge-on galaxy. We report on new very deep Hubble Space Telescope imaging that seems to be in tension with the SMBH runaway scenario but is consistent with the bulgeless edge-on
    Montes, Mireia et al.

    Advertised on:

    6
    2024
    Bibcode
    2024RNAAS...8..150M
    Citations
    0
  • Non-refereed
    Magnetohydrodynamic Processes in Solar Plasmas
    Magnetohydrodynamic Processes in Solar Plasmas provides a comprehensive theory and practice of basic plasma processes in the Sun and heliosphere. It deals with the basic dynamics of the Sun from its interior up to its outer atmosphere in the framework of Magnetohydrodynamics. Topics covered include essential phenomena in the solar interior such as
    Srivastava, Abhishek Kumar et al.

    Advertised on:

    5
    2024
    Bibcode
    2024mpsp.book.....S
    Citations
    0