Beltrami state in black-hole accretion disk: A Magnetofluid approach

POSTER

Abstract

We examine electron-ion Beltrami states in a black hole accretion disk (both Schwarzchild and Kerr) using magnetofluid unification in order to delineate the types of plasma behavior accessible in these geometries. Following the same assumptions as Hall MHD, we find both that the curvature in the spacetime radically alters the magnetic/velocity decay rate and that the predicted geodesic velocity profiles for particles solely constrained by gravity also deviate substantially from our solutions. These departures suggest that these systems are governed by the rich interplay of plasma dynamics and general relativity. Furthermore, the relationship between the helicities of each species introduces a new oscillatory length scale into the system that is strongly influenced by relativistic and thermal effects.

Authors

  • Chinmoy Bhattacharjee

    Institute for Fusion Studies, The University of Texas at Austin, Austin, Texas 78712, USA

  • Rupam Das

    Department of Physical and Applied Sciences, Madonna University, Livonia, Michigan 48150, USA

  • David Stark

    Institute for Fusion Studies, The University of Texas at Austin, Austin, TX, USA, Institute for Fusion Studies, The University of Texas at Austin, Austin, Texas 78712, USA, Institute for Fusion Studies, Univ of Texas, Austin

  • Swadesh Mahajan

    Univ of Texas, Austin, University of Texas at Austin, Institute for Fusion Studies, The University of Texas at Austin, Austin, Texas 78712, USA, IFS, UT Austin