Sonic points and shocks in isothermal accretion and winds in Kerr geometry
| Autor: | Ju-Fu Lu, Feng Yuan, Shawfeng Dong |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
Physics
Angular momentum Astrophysics::High Energy Astrophysical Phenomena Astronomy and Astrophysics Mechanics Accretion (astrophysics) Isothermal process Physics::Fluid Dynamics Classical mechanics Rotating black hole Space and Planetary Science Speed of sound Jump Adiabatic process Axial symmetry Astrophysics::Galaxy Astrophysics |
| Zdroj: | Astrophysics and Space Science. 246:197-210 |
| ISSN: | 1572-946X 0004-640X |
| DOI: | 10.1007/bf00645640 |
| Popis: | This paper is devoted to the study of sonic points and shocks in stationary, axially symmetric, isothermal flows around a Kerr black hole. We first show the dependence of the location of the sonic point with the flow's angular momentum for different isothermal sound speeds. With our selected shock jump conditions, we then discuss the properties of the shock, including the location and the strength. The ambiguity regarding the shock locations is removed by stability analysis. We also find some differences between the shock in isothermal flows and that in adiabatic flows. Subject headings: accretion, accretion disks-black hole physics-hydrodynamics-relativity-shock waves. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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