Magnetar oscillations in the presence of a crust
Magnetar oscillations in the presence of a crust
复制标题
有地壳时的磁星振荡
DOI:
--
复制
发表时间:
2010
期刊:
影响因子:
--
通讯作者:
K. Kokkotas
中科院分区:
文献类型:
--
作者:
A. Colaiuda;K. Kokkotas
We study axisymmetric perturbations of neutron star endowed with a strong magnetic eld (magnetars), considering the coupled oscillations of the uid core with the solid crust. We recover discrete oscillations based mainly in the crust and a continuum in the core. We also conrm the presence of \discrete Alfv en modes" in the gap between two contiguous continua (see van Hoven & Levin (2010)) and, in addition, we can resolve some of them also inside the continua. Our results can explain both the lower and the higher observed quasi periodical oscillations (QPOs) in SGR 1806-20 and SGR 1900+14 and put constrains on the mass, radius and crust thickness of the two magnetars.
影响因子:
6.5
作者:
V. Hambaryan;R. Neuhäuser;K. Kokkotas
通讯作者:
V. Hambaryan;R. Neuhäuser;K. Kokkotas