2-DIMENSIONAL MODELS FOR SOLAR AND STELLAR WINDS - HYDRODYNAMIC EFFECTS

• Type: Article in International Scientific Journal
• Date: 1993

Authors

LIMA, JJG (Author) FCUP; PRIEST, ER (Author) Other

Journal

Title: Astronomy and Astrophysics

Vol. 268

ISSN: 0004-6361

Publisher: EDP Sciences

Indexing

ISI Web of Knowledge - 25 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Authenticus ID: P-001-NCR

Abstract (EN): A new family of solutions of the system of steady hydrodynamic equations describing the axisymmetric outflow originating from a rotating central object, surrounded by a compressible, non-polytropic and inviscid fluid, is deduced. The system is solved self-consistently without any explicit assumption on the form of the velocity field and density; the solutions result purely from the assumed set of equations, the boundary conditions and the assumption of separation of variables. The analysis gives three dimensionless parameters that control the degree of collimation of the outflow as well as the anisotropy of the density distribution. The solution reproduces in a natural way the presence of jets around the polar axis and of disks around the equator that are observed in many astrophysical objects.

Language: English

Type (Professor's evaluation): Scientific