Young isolated neutron stars from the Gould Belt
Young isolated neutron stars from the Gould Belt
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来自古尔德带的年轻孤立中子星
DOI：
10.1051/0004-6361:20030680
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发表时间：
2003
影响因子：
6.5
通讯作者：
U. Padova
中科院分区：
文献类型：
--
作者：
S. Popov;M. Colpi;M. Prokhorov;A. Treves;R. W. A. Institute;U. Milano;Universita' dell'Insubria;U. Padova
年轻的，冷却的中子星的本地人口的起源调查人口合成模型考虑到在古尔德带出生的中子星的贡献，除了那些起源于银河系盘。我们估计它们在软X射线波段的发射作为距离和年龄的函数，并构建对数N -对数S分布。结果表明，古尔德带中子星的包含提供了一个很好的拟合所观察到的LogN-LogS分布。由于太阳位于古尔德带内，人们可以自然地解释相对过剩的大质量祖星，并且可以消除以前从模型中报告的相对明亮（0.1 ROSAT PSPC cts s-1）冷却中子星的不足的困难，其中只有来自银河系的中子星被占。
The origin of the local population of young, cooling neutron stars is investigated with a population synthesis model taking into account the contribution of neutron stars born in the Gould Belt, in addition to those originating in the Galactic disk. We estimate their emission in the soft X-ray band as a function of distance and age and construct the Log N –Log S distribution. It is shown that the inclusion of neutron stars from the Gould Belt provides a good fit to the observed Log N –Log S distribution. As the Sun is situated inside the Gould Belt, one can naturally explain the comparative local overabundance of massive progenitors and can remove the difficulty of the deficit of relatively bright ($\ga$0.1 ROSAT PSPC cts s -1 ) cooling neutron stars previously reported from models where only neutron stars from the Galactic disk were accounted for.