Quiescent luminosities of accreting neutron stars-possibility of neutrino losses due to strong pion condensations

Yasuhide Matsuo; Helei Liu; Masa Aki Hashimoto; Tsuneo Noda

doi:10.1142/S0218301318500672

Quiescent luminosities of accreting neutron stars-possibility of neutrino losses due to strong pion condensations

Yasuhide Matsuo, Helei Liu, Masa Aki Hashimoto, Tsuneo Noda

Experimental Particle Physics

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

We construct the quiescent neutron star models in the evolutionary calculations. The X-ray luminosities have been derived in terms of the time-Averaged mass accretion rate for various neutron star masses and surface compositions. We compare the quiescent luminosities observed from X-ray transients in low mass X-ray binaries, where the stellar evolutionary calculations of accreting neutron stars include neutrino cooling due to strong pion condensations. Our results based on the evolutionary calculations suggest that stronger cooling process would be necessary to be consistent with observations.

Original language	English
Article number	1850067
Journal	International Journal of Modern Physics E
Volume	27
Issue number	8
DOIs	https://doi.org/10.1142/S0218301318500672
Publication status	Published - Aug 1 2018

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Physics and Astronomy(all)

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10.1142/S0218301318500672

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title = "Quiescent luminosities of accreting neutron stars-possibility of neutrino losses due to strong pion condensations",

abstract = "We construct the quiescent neutron star models in the evolutionary calculations. The X-ray luminosities have been derived in terms of the time-Averaged mass accretion rate for various neutron star masses and surface compositions. We compare the quiescent luminosities observed from X-ray transients in low mass X-ray binaries, where the stellar evolutionary calculations of accreting neutron stars include neutrino cooling due to strong pion condensations. Our results based on the evolutionary calculations suggest that stronger cooling process would be necessary to be consistent with observations.",

author = "Yasuhide Matsuo and Helei Liu and Hashimoto, {Masa Aki} and Tsuneo Noda",

note = "Funding Information: We thank K. Hayashida and K. Arai for helpful discussions. This work has been supported in part by a Grant-in-Aid for Scientific Research (24540278, 15K05083) of the Ministry of Education, Culture, Sports, Science and Technology of Japan. Publisher Copyright: {\textcopyright} 2018 World Scientific Publishing Company.",

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doi = "10.1142/S0218301318500672",

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T1 - Quiescent luminosities of accreting neutron stars-possibility of neutrino losses due to strong pion condensations

AU - Matsuo, Yasuhide

AU - Liu, Helei

AU - Hashimoto, Masa Aki

AU - Noda, Tsuneo

N1 - Funding Information: We thank K. Hayashida and K. Arai for helpful discussions. This work has been supported in part by a Grant-in-Aid for Scientific Research (24540278, 15K05083) of the Ministry of Education, Culture, Sports, Science and Technology of Japan. Publisher Copyright: © 2018 World Scientific Publishing Company.

PY - 2018/8/1

Y1 - 2018/8/1

N2 - We construct the quiescent neutron star models in the evolutionary calculations. The X-ray luminosities have been derived in terms of the time-Averaged mass accretion rate for various neutron star masses and surface compositions. We compare the quiescent luminosities observed from X-ray transients in low mass X-ray binaries, where the stellar evolutionary calculations of accreting neutron stars include neutrino cooling due to strong pion condensations. Our results based on the evolutionary calculations suggest that stronger cooling process would be necessary to be consistent with observations.

AB - We construct the quiescent neutron star models in the evolutionary calculations. The X-ray luminosities have been derived in terms of the time-Averaged mass accretion rate for various neutron star masses and surface compositions. We compare the quiescent luminosities observed from X-ray transients in low mass X-ray binaries, where the stellar evolutionary calculations of accreting neutron stars include neutrino cooling due to strong pion condensations. Our results based on the evolutionary calculations suggest that stronger cooling process would be necessary to be consistent with observations.

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Quiescent luminosities of accreting neutron stars-possibility of neutrino losses due to strong pion condensations

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