We calculate quasi-normal f- and g-modes of a neutron star with density discontinuity, which may appear in a phase transition at extreme high density. We find that discontinuity will reflect largely on the f-mode, and that the g-mode could also be important for a less massive star.
@article{arxiv.gr-qc/0108060,
title = {Density Discontinuity of a Neutron Star and Gravitational Waves},
author = {Hajime Sotani and Kazuhiro Tominaga and Kei-ichi Maeda},
journal= {arXiv preprint arXiv:gr-qc/0108060},
year = {2009}
}