Entropy | |
Inhomogeneous and Radiating Composite Fluids | |
Rituparno Goswami1  Sunil D. Maharaj1  Byron P. Brassel1  | |
[1] Astrophysics Research Centre, School of Mathematics, Statistics and Computer Science, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South Africa; | |
关键词: composite fluids; energy conditions; | |
DOI : 10.3390/e23111400 | |
来源: DOAJ |
【 摘 要 】
We consider the energy conditions for a dissipative matter distribution. The conditions can be expressed as a system of equations for the matter variables. The energy conditions are then generalised for a composite matter distribution; a combination of viscous barotropic fluid, null dust and a null string fluid is also found in a spherically symmetric spacetime. This new system of equations comprises the energy conditions that are satisfied by a Type I fluid. The energy conditions for a Type II fluid are also presented, which are reducible to the Type I fluid only for a particular function. This treatment will assist in studying the complexity of composite relativistic fluids in particular self-gravitating systems.
【 授权许可】
Unknown