• Rotation and luminosity variations in post-main sequence stars

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      https://www.ias.ac.in/article/fulltext/joaa/002/04/0387-0403

    • Keywords

       

      rotating stars; post-main sequence evolution; neutrino emission; gravitational radiation

    • Abstract

       

      Previous first-order analytic treatments of rotation acting upon stellar equilibria are extended to include later, post-Helium burning, stages of stellar evolution. Strong differential rotation is capable of substantially increasing the photon luminosities of post-main sequence stars, and thus accelerating their evolution. On the other hand, uniform rotation reduces the photon flux for a wide range of stellar interior types and conditions. Similar conclusions are drawn regarding the effects of rotation on the emission of neutrinos in pre-collapse phases of evolution. A brief discussion of the gravitational radiation emitted during these phases is also given.

    • Author Affiliations

       

      Paul J. Wiita1 2

      1. Theoretical Astrophysics Group, Tata Institute of Fundamental Research, Bombay - 400005
      2. Department of Astronomy and Astrophysics, University of Pennsylvania, Philadelphia - 19104, USA
    • Dates

       
  • Journal of Astrophysics and Astronomy | News

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