A realistic stellar model based on an ansatz of Duorah and Ray
Creators
- 1. Sussex Univ., Brighton (UK). School of Mathematical and Physical Sciences
- 2. Queen Mary Coll., London (UK). School of Mathematical Sciences
Description
It is shown that the analytical stellar model of Duorah and Ray [1987. Class. Quan. Grav. 4. 1691] does not satisfy Einstein's field equations. All possible solutions derivable from the generalised density distribution are exhibited; these include a solution due to Durgapal and Bannerji [1983. Phys. Rev. D.27 328]. The correct solution following from the ansatz of Duorah and Ray is given. The equation of state for the model is obtained in terms of elementary functions, and the solution is shown to be both regular and physically realistic for a range of masses and radii. A comparison between the model and numerical integrations of neutron stars described by a relativistic mean-field theory description of neutron matter shows good overall agreement. (author)
Additional details
Publishing Information
- Journal Title
- Classical and Quantum Gravity
- Journal Volume
- 6
- Journal Issue
- 4
- Series
- Class. Quantum Gravity.
- Journal Page Range
- 467-476
- ISSN
- 0264-9381
- CODEN
- CQGRD
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- United Kingdom
- INIS RN
- 20050607
- Subject category
- S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
- Descriptors DEI
- ANALYTICAL SOLUTION; COMPARATIVE EVALUATIONS; DENSITY; DISTRIBUTION; EINSTEIN FIELD EQUATIONS; EQUATIONS OF STATE; MEAN-FIELD THEORY; NEUTRON STARS; RELATIVISTIC RANGE; SCHWARZSCHILD RADIUS; SPACE-TIME; STAR MODELS
- Descriptors DEC
- ENERGY RANGE; EQUATIONS; EVALUATION; FIELD EQUATIONS; MATHEMATICAL MODELS; PHYSICAL PROPERTIES; STARS
Optional Information
- Contract/Grant/Project number
- Grant GR-D-55580