Search by Bookstore
Holdings of Libraries in Japan
This page shows libraries in Japan other than the National Diet Library that hold the material.
Please contact your local library for information on how to use materials or whether it is possible to request materials from the holding libraries.
other
Chiba University Repository for Access to Outcomes from Research
DigitalYou can check the holdings of institutions and databases with which Institutional Repositories DataBase(IRDB)(Institutional Repository) is linked at the site of Institutional Repositories DataBase(IRDB)(Institutional Repository).
Search by Bookstore
Bibliographic Record
You can check the details of this material, its authority (keywords that refer to materials on the same subject, author's name, etc.), etc.
- Material Type
- 文書・図像類
- Author/Editor
- 松元, 亮治
- Author Heading
- Text Language Code
- eng
- Subject Heading
- NDC
- Target Audience
- 一般
- Note (General)
- type:textThe stability of nonaxisymmetric perturbations in dierentially rotating astrophysical accretion disksis analyzed by fully incorporating the properties of shear flows. We verify the presence of discrete unstableeigenmodes with complex and pure imaginary eigenvalues, without any artificial disk edge boundaries,unlike Ogilvie & Pringle(1996)'s claim. By developing the mathematical theory of a non-self-adjointsystem, we investigate the nonlocal behavior of eigenmodes in the vicinity of Alfv´en singularities at!D = ±!A, where !D is the Doppler-shifted wave frequency and !A = kkvA is the Alfv´en frequency.The structure of the spectrum of discrete eigenmodes is discussed and the magnetic field and wavenumberdependence of the growth rate are obtained. Exponentially growing modes are present even in a regionwhere the local dispersion relation theory claims to have stable eigenvalues. The velocity field created byan eigenmode is obtained, which explains the anomalous angular momentum transport in the nonlinearstage of this stability.
- Access Restrictions
- 限定公開