Effects of a new 3-alpha reaction rate on X-ray bursts of a helium accreting neutron star

Y. Matsuo, H. Tsujimoto, T. Noda, M. Saruwatari, M. Ono, Masa-Aki Hashimoto, M. Y. Fujimoto

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

抄録

We investigate the effects of a new 3-α reaction rate (OKK rate) on a He flash of a He accreting neutron star in a binary system. Since ignition points determine the properties of a thermonuclear flash of type I X-ray bursts, we examine the cases of different accretion rates, dM/dt (Ṁ). We find that, at low accretion rates, nuclear burning occurs at the He layers of rather low densities. As a consequence, He ignition would occur at accretion rate lower than M&dot ≃3x10-8Myr-1 Furthermore we find that the OKK rate is consistent with the available observations of X-ray bursts on a He accreting neutron star. We advocate that the OKK rate is better than the previous rate for the astrophysical phenomena of X-ray burst due to He accretion.

本文言語英語
ホスト出版物のタイトルOrigin of Matter and Evolution of Galaxies 2011
ページ381-383
ページ数3
DOI
出版ステータス出版済み - 12 1 2012
イベントInternational Symposium on Origin of Matter and Evolutions of Galaxies 2011, OMEG 2011 - Wako, 日本
継続期間: 11 14 201111 17 2011

出版物シリーズ

名前AIP Conference Proceedings
1484
ISSN(印刷版)0094-243X
ISSN(電子版)1551-7616

その他

その他International Symposium on Origin of Matter and Evolutions of Galaxies 2011, OMEG 2011
国/地域日本
CityWako
Period11/14/1111/17/11

All Science Journal Classification (ASJC) codes

  • 物理学および天文学(全般)

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