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    • On the Use of Roche Equipotentials in Analysing the Problems of Binary and Rotating Stars

      A. Pathania A. K. Lal C. Mohan

      Research Articles Volume 34 Issue 1 March 2013 pp 69-73

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/joaa/034/01/0069-0073

    • Keywords

       

      Methods: analytic; binary: close; stars: rotation.

    • Abstract

       

      Kopal (Adv. Astron. Astrophys., 9, 1, 1972) introduced the concept of Roche equipotentials to analyse the effects of rotational and tidal distortions in case of stars in binary systems. In this approach a mathematical expression for the potential of a star in a binary system is obtained by approximating its inner structure with Roche model. This expression for the potential has been used in subsequent analysis by various authors to analyse the problems of structures and oscillations of synchronous and nonsynchronus binary stars as well as single rotating stars. Occasionally, doubts have been expressed regarding the validity of the use of this approach for analysing nonsynchronous binaries and rotationally and tidally distorted single stars. In this paper we have tried to clarify these doubts.

    • Author Affiliations

       

      A. Pathania1 A. K. Lal1 C. Mohan2

      1. School of Mathematics and Computer Applications, Thapar University, Patiala 147 004, India
      2. Ambala College of Engineering and Applied Research, Ambala Cantt 133 101, India

    • Dates

       
      Published
      March 2013
      Manuscript received
      30 May 2011
      Accepted
      9 April 2013

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