A LOCAL STABILITY ANALYSIS OF AN ISOTHERMAL DISC WITH 3-DIMENSIONAL MAGNETIC-FIELDS

Authors
YANG LT HENNING T LU Y WU SP
Citation
Lt. Yang et al., A LOCAL STABILITY ANALYSIS OF AN ISOTHERMAL DISC WITH 3-DIMENSIONAL MAGNETIC-FIELDS, Monthly Notices of the Royal Astronomical Society, 288(4), 1997, pp. 965-972
Citations number
25
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Monthly Notices of the Royal Astronomical Society → ACNP
ISSN journal
00358711
Volume
288
Issue
4
Year of publication
1997
Pages
965 - 972
Database
ISI
SICI code
0035-8711(1997)288:4<965:ALSAOA>2.0.ZU;2-F
Abstract
The instability of an isothermal magnetized accretion disc is examined . It is shown that the radial and the azimuthal magnetic fields B-r, B -phi are dominant in enhancing the instability of the magneto-acoustic modes, and that the radial pulsational oscillations are larger than t hose in the z direction. Finally, we use our model to explain the vari ability of FU Orionis and T Tauri stars.