6533b856fe1ef96bd12b26cd
RESEARCH PRODUCT
Magnetised Polish doughnuts revisited
José A. FontSergio Gimeno-solersubject
High Energy Astrophysical Phenomena (astro-ph.HE)PhysicsAngular momentumAccretion (meteorology)010308 nuclear & particles physicsGeneral relativityEquipotential surfaceFOS: Physical sciencesAstronomy and AstrophysicsTorus83C55 83C57 83C55General Relativity and Quantum Cosmology (gr-qc)Astrophysics01 natural sciencesGeneral Relativity and Quantum CosmologyClassical mechanicsSpace and Planetary Science0103 physical sciencesConstant (mathematics)Astrophysics - High Energy Astrophysical Phenomena010303 astronomy & astrophysicsDistribution (differential geometry)Ansatzdescription
We discuss a procedure to build new sequences of magnetised, equilibrium tori around Kerr black holes which combines two approaches previously considered in the literature. For simplicity we assume that the test-fluid approximation holds, and hence we neglect the self-gravity of the fluid. The models are built assuming a particular form of the angular momentum distribution from which the location and morphology of equipotential surfaces can be computed. This ansatz includes, in particular, the constant angular momentum case originally employed in the construction of thick tori - or Polish doughnuts - and it has already been used to build equilibrium sequences of purely hydrodynamical models. We discuss the properties of the new models and their dependence on the initial parameters. These new sequences can be used as initial data for magnetohydrodynamical evolutions in general relativity.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-11-01 |