TY - GEN
T1 - Effects of a new 3-alpha reaction rate on X-ray bursts of a helium accreting neutron star
AU - Matsuo, Y.
AU - Tsujimoto, H.
AU - Noda, T.
AU - Saruwatari, M.
AU - Ono, M.
AU - Hashimoto, Masa-Aki
AU - Fujimoto, M. Y.
PY - 2012/12/1
Y1 - 2012/12/1
N2 - 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 ≃3x10-8M⊙yr-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.
AB - 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 ≃3x10-8M⊙yr-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.
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U2 - 10.1063/1.4763427
DO - 10.1063/1.4763427
M3 - Conference contribution
AN - SCOPUS:84874524266
SN - 9780735410961
T3 - AIP Conference Proceedings
SP - 381
EP - 383
BT - Origin of Matter and Evolution of Galaxies 2011
T2 - International Symposium on Origin of Matter and Evolutions of Galaxies 2011, OMEG 2011
Y2 - 14 November 2011 through 17 November 2011
ER -