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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/3973

Title: THE CONTRIBUTION OF DEGENERATE ELECTRON PRESSURE TO THE STABILITY OF THIN KEPLERIAN ACCRETION DISKS AROUND A NEUTRON STAR WITH AXISYMMETRIC MAGNETIC DIPOLE
Authors: ABBI, SEYOUM
Advisors: Dr. Legesse Wotro
Keywords: geometrically thin
thermal modes
Copyright: Jun-2011
Date Added: 24-Nov-2012
Publisher: AAU
Abstract: The stability analysis of a geometrically thin, gas-pressure dominated accretion disk around a neutron star is presented. In purely radial perturbation case, thin disk is stable to thermal modes. The stability is analyzed at a small temperature, that is temperature approaching zero and at nite temperature. The contribution of both fully and partially degenerate electrons for the stability of the disk in its middle and outer regions are investigated. We nd that the disk is stable in these regions, where the gas pressure is more dominant than radiation pressure.
Description: A Thesis SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF SCIENCE IN PHYSICS (ASTRONOMY)
URI: http://hdl.handle.net/123456789/3973
Appears in:Thesis - Physics

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