Instabilities of Stellar Disks

Details Instabilities of Stellar Disks Instabilities of Stellar Disks

Aug 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003dda....34.1106j&link_type=abstract

American Astronomical Society, DDA meeting #34, #11.06; Bulletin of the American Astronomical Society, Vol. 35, p.1046

Astronomy and Astrophysics

Astronomy

Scientific paper

We investigate the instabilities of the flat isochrone and Kuzmin-Toomre disks using Kalnajs's matrix method. For the unperturbed disks in equilibrium, we introduce a new class of anisotropic distribution functions (DF) in the form f(E,Lz)=f_0(E)+f_1(E,L_z). At first, we prescribe f1(E,L_z), determine its corresponding surface density and subtract it from the model density. We then reproduce the remainder density by the isotropic part of the DF, f0(E). The DFs that we generate, enable us to control the population of circular, radial and rosette orbits. We investigate how the populations of these orbits influence the instability of our axisymmetric disks. To compute the matrix elements of Kalnajs's method, we choose orbital frequencies as the integration variables and regularize resonance singularities using the Legendre functions of the second kind. The response of the disk, and its unstable modes are then computed through an iterative scheme.

Affiliated with

Also associated with

No associations

Rating

Instabilities of Stellar Disks 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 Instabilities of Stellar Disks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Instabilities of Stellar Disks will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1667829