GRAVITATIONAL COLLAPSE OF A MAGNETIZED VORTEX - APPLICATION TO THE GALACTIC-CENTER

Citation
Z. Meglicki et al., GRAVITATIONAL COLLAPSE OF A MAGNETIZED VORTEX - APPLICATION TO THE GALACTIC-CENTER, Monthly Notices of the Royal Astronomical Society, 272(4), 1995, pp. 717-729
Citations number
36
Categorie Soggetti
Astronomy & Astrophysics
ISSN journal
00358711
Volume
272
Issue
4
Year of publication
1995
Pages
717 - 729
Database
ISI
SICI code
0035-8711(1995)272:4<717:GCOAMV>2.0.ZU;2-5
Abstract
A numerical experiment based on smoothed particle magnetohydrodynamics is used to gain insights into the evolution of magnetic fields, curre nts and gas flows during the collapse of a magnetized vortex on to a c ompact massive object. We observe the formation of an expanding ring i n the symmetry plane of the system and the presence of spiralling inwa rd motion towards the centre of attraction. The final state of the sys tem compares favourably with the observed qualitative and quantitative characteristics of the circumnuclear disc in the Galactic Centre.