Structure of a Fluid Disk around a Magnetized Compact Object in the Presence of a Self-consistent Toroidal Magnetic Field

Abstract

view Abstract Citations (14) References (21) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Structure of a Fluid Disk around a Magnetized Compact Object in the Presence of a Self-consistent Toroidal Magnetic Field Banerjee, D. ; Bhatt, J. R. ; Das, A. C. ; Prasanna, A. R. Abstract We examine a rotating thick-disk equilibrium in the presence of external gravity and intrinsic dipolar magnetic field due to a nonrotating central object. The solutions we have found show that the pressure and density equilibrium profiles are strongly modified by a self-consistently generated toroidal magnetic field. By drawing an analogy with the Couette flow, a stability criterion for the derived solutions is obtained. It is found that such an equilibrium cannot support a toroidal magnetic field of arbitrary strength. The magnetic field line topology is such that kinks develop in the field line structure. Such kinks will probably give rise to instabilities for a strong toroidal component of the magnetic field. Publication: The Astrophysical Journal Pub Date: August 1995 DOI: 10.1086/176098 Bibcode: 1995ApJ...449..789B Keywords: ACCRETION; ACCRETION DISKS; HYDRODYNAMICS; MAGNETOHYDRODYNAMICS: MHD full text sources ADS |