The spatial distribution of old neutron stars in the Galaxy 被引量：1

The spatial distribution of old neutron stars in the Galaxy

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摘要 The spatial distributions of old neutron stars (NSs) with ages 109 to 1010 yr in our Galaxy are investigated by Monte Carlo simulation under two different initial random velocity models.It is found that the scale heights of the distribution increase with the Galactic radial distance.The location of the peak of the NS distribution is closer to the Galactic center than that of their progenitors.The results from our detailed numerical analysis reveal that there is resemblance between the simulated old NS distribution and the structure of the observed HI disk. The spatial distributions of old neutron stars (NSs) with ages 109 to 1010 yr in our Galaxy are investigated by Monte Carlo simulation under two different initial random velocity models.It is found that the scale heights of the distribution increase with the Galactic radial distance.The location of the peak of the NS distribution is closer to the Galactic center than that of their progenitors.The results from our detailed numerical analysis reveal that there is resemblance between the simulated old NS distribution and the structure of the observed HI disk.

作者 WEI YingChun ZHANG ChengMin WU XinJi ZHAO YongHeng CHOU ChiKang LUO ALi

机构地区 National Astronomical Observatories Department of Astronomy National Astronomical Observatories/Urumqi Observatory

出处《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS 2010年第10期1939-1946,共8页 中国科学:物理学、力学、天文学(英文版)

基金 supported by the National Natural Science Foundation of China (Grant Nos. 10903010,10778611,10773017,10973021 and10573026) the National Basic Research Program of China (Grant No.2009CB824800)

关键词 neutron stars Galaxy structure Galaxy disk star evolution neutron stars Galaxy structure Galaxy disk star evolution

分类号 P145.6 [天文地球—天体物理]

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