|
Speaker |
Cerda-Duran, Pablo |
|
Co-autors |
N. Stergiolas, J.A. Font |
|
Talk Title |
Alfven QPOs in Magnetars in the anelastic approximation |
|
Abstract |
Alfven oscillations of magnetars are a possible explanation for, at least some, of the observed quasi-periodic oscillations (QPOs) in soft gamma repeaters. I present results of two-dimensional simulations of Alfven torsional oscillations in magnetars, modeled as relativistic stars with a dipolar magnetic field. We use a general relativistic magnetohydrodynamics code in the anelastic approximation, which allows for an effective suppression of fluid modes and an accurate description of the Alfven waves. We present also a new method to compute the QPOs frequencies and compare it to the numerical results. |
|
Talk view |
|
|
|
|