Browsing Articles by Subject "Helioseismology"

Browsing Articles by Subject "Helioseismology"

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  • Guenther, David B.; Li, L. H.; Basu, S.; Sofia, S.; Robinson, F. J.; Demarque, P. (American Astronomical Society and IOP Publishing, 2003-07-10)
    We construct models of the structure and evolution of the Sun which include variable magnetic fields and turbulence. The magnetic effects are (1) magnetic pressure, (2) magnetic energy, and (3) magnetic modulation to ...

  • Guenther, David B.; Li, L. H.; Robinson, F. J.; Demarque, P.; Sofia, S. (American Astronomical SocietyIOP Publishing, 2002-03-10)
    The general consensus is that in order to reproduce the observed solar p-mode oscillation frequencies, turbulence should be included in solar models. However, until now there has not been any well-tested efficient method ...

  • Guenther, David B.; Brown, Kevin I. T. (American Astronomical Society, 2004-01)
    We describe a method to match stellar models to a set of low-l p-mode oscillation frequencies. The method provides a quality of fit measure similar to that obtained from a [subscript X][superscript 2] fit. With a sufficiently ...

  • Guenther, David B.; Kim, Y.-C.; Demarque, P. (American Astronomical Society, 1996-05-20)
    The OPAL equation-of-state tables and the MHD equation-of-state tables are utilized in the calculation of new standard solar models that also include helium diffusion. The structure of the models and their l = 0-100 p-mode ...

  • Gruberbauer, Michael; Guenther, David B.; Kallinger, T. (American Astronomical Society, 2012-04-20)
    Recent developments in instrumentation (e.g., in particular the Kepler and CoRoT satellites) provide a new opportunity to improve the models of stellar pulsations. Surface layers, rotation, and magnetic fields imprint ...

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