Rotational energy conversion and thermal evolution of neutron stars

Cui Zhu; Xia Zhou; Na Wang

doi:10.1088/1674-1137/41/12/125104

Chinese Physics C> 2017, Vol. 41> Issue(12) : 125104 DOI: 10.1088/1674-1137/41/12/125104

Rotational energy conversion and thermal evolution of neutron stars

Cui Zhu ^1,2,3 ,
Xia Zhou ^1,2,, ,
Na Wang ^1,2

1.
Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Urumqi 830011, China
2.
Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, Urumqi 830011, China
3.
University of Chinese Academy of Sciences, 19 A Yuquan Road, Beijing 100049, China

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Abstract：
Pulsars are rapidly spinning, strongly magnetized neutron stars. Their electromagnetic dipole radiation is usually assumed to be at the expense of the rotational energy. In this work, we consider a new channel through which rotational energy could be radiated away directly via neutrinos. With this new energy conversion channel, we can improve the chemical heating mechanism that originates in the deviation from β equilibrium due to spin-down compression. The improved chemical and thermal evolution equations with different magnetic field strengths are solved numerically. The results show that the new energy conversion channel could raise the surface temperature of neutron stars, especially for weak field stars at later stages of their evolution. Moreover, our results indicate that the new energy conversion channel induced by the non-equilibrium reaction processes should be taken into account in the study of thermal evolution.
- neutron star ,
- rotation ,
- thermal evolution ,
- energy conversion

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Cui Zhu, Xia Zhou and Na Wang. Rotational energy conversion and thermal evolution of neutron stars[J]. Chinese Physics C, 2017, 41(12): 125104. doi: 10.1088/1674-1137/41/12/125104

Cui Zhu, Xia Zhou and Na Wang. Rotational energy conversion and thermal evolution of neutron stars[J]. Chinese Physics C, 2017, 41(12): 125104. doi: 10.1088/1674-1137/41/12/125104 shu

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Received: 2017-04-07
Revised: 2017-09-11

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Supported by National Natural Science Foundation of China (11373006) and the West Light Foundation of Chinese Academy of Sciences (ZD201302)

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Rotational energy conversion and thermal evolution of neutron stars

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Rotational energy conversion and thermal evolution of neutron stars

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