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Can I read Rotational Modes in a Uniformly Rotating Star on EtoBox?
Rotational Modes in a Uniformly Rotating Star by P. Smeyers is a Physics and Astronomy article available to read on EtoBox.
What is Rotational Modes in a Uniformly Rotating Star about?
The linear adiabatic oscillations of a uniformly rotating star are examined with respect to a co-rotating frame of reference. It is shown that time-independent displacement fields are allowed and can be represented as toroidal fields. The time-dependent oscillation modes are governed by a system of differential equations of the fourth order in time for axisymmetr~c perturbations, and of the fifth order for nonaxisymmetric perturbations. Therefore, in comparison to a non-rotating spherical star, a rotating star allows a new class of non-axisymmetric oscillation modes with non-zero frequencies. These modes correspond to the r-modes, which originate from purely toroidal displacement fields in a non-rotating spherical star. For the r-modes of a slowly and uniformly rotating star, a perturbation method has been developed, with inclusion of the perturbation of the gravitational potential. It is seen that both dynamically stable and unstable r-modes do exist.
Who reads Rotational Modes in a Uniformly Rotating Star?
It is typically read by researchers, students, and practitioners in Physics and Astronomy.
- Author
- P. Smeyers
- Publisher
- Springer Netherlands; Springer-Verlag; Kluwer Academic Publishers; Springer Science and Business Media LLC (ISSN 0038-6308)
- Published
- 1980
- Language
- EN
- Field
- Physics and Astronomy (Physical Sciences)