ヤナセ　コウタ   Kota Yanase   柳瀬　宏太    所属   千葉工業大学  工学部 教育センター（工学部）    職種   助教
発行・発表の年月	2020/10/09
形態種別	学術雑誌
査読	査読あり
標題	Searching optimum equations of state of neutron star matter in strong magnetic fields with rotation
執筆形態	共著
掲載誌名	Progress of Theoretical and Experimental Physics
掲載区分	国内
出版社・発行元	Oxford University Press (OUP)
巻・号・頁	2020(10)
著者・共著者	C Watanabe,K Yanase,N Yoshinaga
概要	<title>Abstract</title> Masses and radii of neutron stars are obtained in the presence of strong magnetic fields together with rotation. Mass-radius relations are calculated using 11 equations of state (EoSs: GM1, TM1-a, TM1-b, TM2$\omega\rho$-a, TM2$\omega\rho$-b, NL3-a, NL3-b, NL3$\omega\rho$-a, NL3$\omega\rho$-b, DDME2-a and DDME2-b) in relativistic mean field (RMF) theory. Obtained masses are over and around twice the solar mass ($M_\odot$) for all EoSs in the presence of strong magnetic fields of $3 \times 10^{18}$ G at the center. For NL3$\omega\rho$-a and NL3$\omega\rho$-b EoSs, masses are more than $M=2.17\,M_\odot$(observed maximum mass: $2.14\,M_\odot$) even without magnetic fields. Rotational effects are found to be insignificant in any case, at least up to the Kepler frequency. Suitable EoSs are also selected concerning the constraint on the radius of a neutron star.
DOI	10.1093/ptep/ptaa134
ISSN	/2050-3911
PermalinkURL	http://academic.oup.com/ptep/advance-article-pdf/doi/10.1093/ptep/ptaa134/33708620/ptaa134.pdf
researchmap用URL	http://academic.oup.com/ptep/article-pdf/2020/10/103E04/34013559/ptaa134.pdf