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  • 1970-1974  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    The center-to-limb variation of the photospheric wave spectrum (1974)
    Springer
    Solar physics 37 (1974), S. 63-74 
    Details
    ISSN: 1573-093X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Using photoelectric observations in the Fe 5576 Å line we obtained line-of-sight velocities at nine different positions on the solar disk, as functions of one horizontal co-ordinate and time. With the help of the Fast Fourier Transform algorithm we calculated two-dimensional power spectra (horizontal wave number and frequency). Special attention was given to the possible existence of horizontal sound waves. We find only very little power in these waves; thus the excitation of the solar atmosphere to oscillations by locally overshooting granules, which should be accompanied by horizontal sound waves with large amplitudes, can play only a minor role.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00157844
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    On the solar magnetic ‘monopole’ (1974)
    Springer
    Solar physics 37 (1974), S. 493-495 
    Details
    ISSN: 1573-093X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A superposed epoch analysis shows that the Sun's spurious magnetic monopole varies like the solar declination. This indicates that the monopole is caused by instrumental effects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00152509
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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