• Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/joaa/014/03-04/0167-0179

    • Keywords

       

      Accretion disks; hydromagnetics; instability

    • Abstract

       

      A two-dimensional instability analysis for a magneto-keplerian disk flow around a compact object is presented here. Using the eigenvalue technique, linearly coupled perturbed equations have been numerically solved within the local approximation. It is concluded that Kelvin-Helmholtz, magnetosonic (fast and slow) and resistive electromagnetic modes exist. However, only the magnetosonic mode can destabilise the disk structure. Further, we discuss the properties of different modes as a function of disk parameters and plot the eigenmode structures for different physical quantities.

    • Author Affiliations

       

      S. C. Tripathy1 C. B. Dwivedi2 A. C. Das3 A. R. Prasanna3

      1. Udaipur Solar Observatory, Physical Research Laboratory, 11, Vidya Marg, Udaipur - 313001
      2. Institute of Advanced Study in Science and Technology, Khanapara, Guwahati - 781022
      3. Physical Research Laboratory, Navrangpura, Ahmedabad - 380 009
    • Dates

       
  • Journal of Astrophysics and Astronomy | News

    • Continuous Article Publication

      Posted on January 27, 2016

      Since January 2016, the Journal of Astrophysics and Astronomy has moved to Continuous Article Publishing (CAP) mode. This means that each accepted article is being published immediately online with DOI and article citation ID with starting page number 1. Articles are also visible in Web of Science immediately. All these have helped shorten the publication time and have improved the visibility of the articles.

© 2017-2019 Indian Academy of Sciences, Bengaluru.