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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish
Title of host publicationOrigin of Matter and Evolution of Galaxies 2011
Pages381-383
Number of pages3
DOIs
Publication statusPublished - Dec 1 2012
EventInternational Symposium on Origin of Matter and Evolutions of Galaxies 2011, OMEG 2011 - Wako, Japan
Duration: Nov 14 2011Nov 17 2011

Publication series

NameAIP Conference Proceedings
Volume1484
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherInternational Symposium on Origin of Matter and Evolutions of Galaxies 2011, OMEG 2011
CountryJapan
CityWako
Period11/14/1111/17/11

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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