Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992ap%26ss.195..373h&link_type=abstract
Astrophysics and Space Science, Volume 195, Issue 2, pp.373-387
Astronomy and Astrophysics
Astrophysics
1
Scientific paper
In a slab jet model the influence of strong magnetic fields and density contrasts on the development of instabilities caused by velocity contrasts is studied and applied to disc accretion onto magnetized compact object. The perturbations propagating transverse to a magnetic field in external regions are shown not to be stabilized. A strong density contrast at the jet boundary (R=ρex/ρin ≪ 1) does not stabilize the instability of acoustic resonance type (ARTI), the fundamental symmetric and antisymmetric modes being still unstable for any finite value ofR. At the same time a criticalR-value exists (R˜1/M 2,M is the Mach number) at which the higher reflection harmonics are stabilized. A comparative analysis is made of ARTI and Kelvin-Helmholtz instability that is developed by surface modes of the interfaces between the disc material and magnetic field (magnetosphere) is performed. ARTI may be responsible for the accreting material penetration into the magnetosphere as well as other mechanisms.
Hoperskov A. V.
Mustsevaya Yu. V.
Mustsevoy V. V.
No associations
LandOfFree
Shear Layer Instabilities in Accretion Discs around Magnetized Compact Objects does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Shear Layer Instabilities in Accretion Discs around Magnetized Compact Objects, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shear Layer Instabilities in Accretion Discs around Magnetized Compact Objects will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1765759