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arXiv 0705.2999nucl-thastro-phnucl-ex
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地球实验室中重离子反应中子星的约束性质

Constraining properties of neutron stars with heavy-ion reactions in terrestrial laboratories

Bao-An Li, Lie-Wen Chen, Che Ming Ko, Plamen G. Krastev, Andrew W. Steiner, Gao-Chan Yong

摘要:

重离子反应为研究丰中子核物质的物态方程,特别是核对称能$E_{sym}(ρ)$的密度依赖性提供了一种独特的手段。后者在理解核物理和天体物理中的许多关键问题方面起着重要作用。最近的重离子反应分析已经对饱和密度附近的$E_{sym}(ρ)$提出了严格的限制。这使我们能够有效地限制中子星的半径和冷却机制,以及引力常量G的可能变化率。

英文摘要:

Heavy-ion reactions provide a unique means to investigate the equation of state (EOS) of neutron-rich nuclear matter, especially the density dependence of the nuclear symmetry energy $E_{sym}(ρ)$. The latter plays an important role in understanding many key issues in both nuclear physics and astrophysics. Recent analyses of heavy-ion reactions have already put a stringent constraint on the $E_{sym}(ρ)$ around the saturation density. This subsequently allowed us to constrain significantly the radii and cooling mechanisms of neutron stars as well as the possible changing rate of the gravitational constant G.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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