Berhane, Berzaf (2013) The Contribution of Degenerate Electron Pressure to the Stability of Thin Keplerian Accretion Disks Around a Neutron Star with Axisymmetric Magnetic Dipole. Masters thesis, Addis Ababa University.
![[img]](http://thesisbank.jhia.ac.ke/style/images/fileicons/application_pdf.png) |
PDF (The Contribution of Degenerate Electron Pressure to the Stability of Thin Keplerian Accretion Disks Around a Neutron Star with Axisymmetric Magnetic Dipole)
Berzaf, Berhane.pdf - Accepted Version Restricted to Repository staff only Download (847kB) | Request a copy |
Abstract
The stability analysis of a geometrically thin, gas-pressure dominated accretion disk around a neutron star is presented.We have also derived the electron degenerate pressures and gas pressure in the middle and outer regions of the disk as a function of r using radial dependence of the central temperature and the density. The latter was obtained using the basic equations for thin accretion in non-relativistic case. The stability is analyzed at a small temperature, that is temperature approaching zero and at finite 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 find that the disk is stable in these regions, where the gas pressure is more dominant than radiation pressure.
| Item Type: | Thesis (Masters) |
|---|---|
| Subjects: | Q Science > Q Science (General) Q Science > QC Physics |
| Divisions: | Africana |
| Depositing User: | Selom Ghislain |
| Date Deposited: | 20 Sep 2018 12:43 |
| Last Modified: | 20 Sep 2018 12:43 |
| URI: | http://thesisbank.jhia.ac.ke/id/eprint/5325 |
Actions (login required)
 |
View Item |