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    Analyzing the Lack of X-ray Production in Wolf-Rayet Winds through Computational Modeling.

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    File(s)
    JohnsonSpr08.pdf (21.54Mb)
    Date
    2009-01-30
    Author
    Johnson, Andrew
    Advisor(s)
    Miller, Nathan A.
    Metadata
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    Abstract
    Typical hot massive stars (OB stars) produce X-ray emissions that are attributed to the shock production in their winds. Wolf-Rayet stars are unique in that despite similar characteristics to other OB stars, they produce extremely weak X-ray emission. Using the modeling program Spect3D (developed by Prism Corporation), we construct models of Wolf-Rayet winds. We can then analyze the effects of shock features in the wind, and what impact they have on the optical depth and populations of elemental ions. We then run comparison models of typical X-ray producing stars to see what features differ in the Wolf-Rayet models that could explain the lack of X-ray emissions.
    Subject
    Wolf-Rayet stars
    Stellar winds--Mathematical models
    X-ray astronomy--Mathematical models
    Posters
    Permanent Link
    http://digital.library.wisc.edu/1793/31973
    Description
    Color poster with text, charts, and graphs describing research conducted by Andrew Johnson, advised by Nathan A. Miller.
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    • Student Research Day

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