The evolution of discontinuities in radiating spheres in the diffusion approximation

Journal Article · Mon Jul 01 04:00:00 EDT 1991 · Astrophysical Journal; (United States)

DOI:https://doi.org/10.1086/170229· OSTI ID:5261928

Barreto, W; Herrera, L; Nunez, L ^[1]

---

1. Universidad de Oriente, Cumana (Venezuela) Universidad Central de Venezuela, Caracas (Venezuela) Universidad de los Andes, Merida (Venezuela)

The evolution of discontinuities in a general relativistic sphere free of singularities is studied. The energy transport mechanism through fluid is diffusive. The distribution of matter is divided by a shock wave front in two regions. The equations of state at both sides of the shock are different, and the solutions are matched on it via the Rankine-Hugoniot conditions. The outer metric joins the Vaidya solution at the boundary surface of the sphere. Exploding models are obtained, and their dynamics are studied using a generalized compressibility coefficient for nonadiabatic systems. 17 refs.

• OSTI ID: 5261928
• Journal Information: Astrophysical Journal; (United States), Journal Name: Astrophysical Journal; (United States) Vol. 375; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DIFFUSION
DISTRIBUTION
DYNAMICS
ENERGY TRANSPORT
EQUATIONS
EQUATIONS OF STATE
FIELD THEORIES
GENERAL RELATIVITY THEORY
MASS DISTRIBUTION
MATHEMATICAL MODELS
MECHANICS
RANKINE-HUGONIOT EQUATIONS
SHOCK WAVES
SINGULARITY
SPATIAL DISTRIBUTION
SPHERES
STAR MODELS