ダウンロード数: 218
このアイテムのファイル:
ファイル | 記述 | サイズ | フォーマット | |
---|---|---|---|---|
PhysRevD.89.124037.pdf | 305.62 kB | Adobe PDF | 見る/開く |
タイトル: | Stellar oscillations in Eddington-inspired Born-Infeld gravity |
著者: | Sotani, Hajime |
著者名の別形: | 祖谷, 元 |
発行日: | 30-Jun-2014 |
出版者: | American Physical Society |
誌名: | Physical Review D |
巻: | 89 |
号: | 12 |
論文番号: | 124037 |
抄録: | We consider the stellar oscillations of relativistic stars in the Eddington-inspired Born-Infeld gravity (EiBI). In order to examine the specific frequencies, we derive the perturbation equations governing the stellar oscillations in EiBI by linearizing the field equations and numerically determine the oscillation frequencies by changing the coupling parameter in EiBI, κ, and stellar models. As a result, we find that the frequencies depend strongly on the value of κ, where the frequencies in EiBI with negative κ become higher and those with positive κ become lower than the expectations in general relativity. We also find that, via the observation of the fundamental frequency, one could distinguish EiBI with 8πε0|κ|≳0.03 from general relativity, independently of the equation of state for neutron star matter, where ε0 denotes the nuclear saturation density and ε0κ becomes a dimensionless parameter. With the further constraints on equation of state, one might distinguish EiBI even with 8πε0|κ|≲0.03 from general relativity. |
著作権等: | © 2014 American Physical Society |
URI: | http://hdl.handle.net/2433/189081 |
DOI(出版社版): | 10.1103/PhysRevD.89.124037 |
出現コレクション: | 学術雑誌掲載論文等 |
このリポジトリに保管されているアイテムはすべて著作権により保護されています。