Constraints on the nuclear symmetry energy via asteroseismology

Hajime Sotani, Ken'ichiro Nakazato, Kei Iida, Kazuhiro Oyamatsu

研究成果: Contribution to journalConference article


We examine the fundamental torsional oscillations of the crust in the neutron star. Especially, we focus on the crystalline properties obtained from macroscopic nuclear models. As a result, we find that the frequencies of fundamental torsional oscillations are sensitive to the density dependence of the symmetry energy, but almost independent of the incompressibility of symmetric nuclear matter. Identifying the lowest frequency among the quasi-periodic oscillations observed in the giant flares as the fundamental ℓ = 2 torsional oscillations, we put constraints on the density derivative of the symmetry energy as L ≃ 50 MeV.

ジャーナルJournal of Physics: Conference Series
出版物ステータス出版済み - 2013
イベント15th Conference on Recent Developments in Gravity, NEB 2012 - Chania, Crete, ギリシャ
継続期間: 6 20 20126 23 2012

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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