标题： 脉冲星群体和未识别的伽马射线源 显示英文标题

标题： Pulsar Populations and Unidentified Gamma-Ray Sources

摘要： 康普顿伽马射线天文台上的EGRET望远镜探测到了超过200个源，其中大多数仍未被识别。 至少已将EGRET源的三个次群体与银河系联系起来：位于银河平面附近的明亮源、与古尔德带空间相关的较弱源以及高纬度、晕轮群体。 这些源中的许多可能是脉冲星，而在EGRET源误差框内或附近有二十多个射电脉冲星，其中大部分是在帕克斯多波束巡天中最近发现的。 我们介绍了几个关于银河系脉冲星的种群综合研究的结果，这些研究预测了在伽马射线和射电巡天中探测到的脉冲星数量，假设了高能辐射束及其与射电辐射束关系的模型。 AGILE和GLAST未来的伽马射线脉冲星探测，连同近期射电脉冲星种群的大幅增长，将大大改善统计结果。 在银河平面和古尔德带种群中检测到的射电和伽马射线脉冲星的相对数量，将为高能辐射模型提供重要的判据，并将严重影响银河系中脉冲星的数量和诞生率。 显示英文摘要

摘要： The EGRET telescope on the Compton Gamma-Ray Observatory detected over 200 sources and the majority of these are still unidentified. At least three subpopulations of EGRET sources have been associated with the Galaxy: bright sources lying along the Galactic plane, weaker sources spatially correlated with the Gould Belt and a high-latitude, halo population. Many of these sources may be pulsars and there are more than two-dozen radio pulsars in or near EGRET source error boxes, most of them recently discovered in the Parkes Multibeam Survey. We present results from several population synthesis studies of pulsars in the Galaxy, which predict the number of pulsars detected by gamma-ray and radio surveys assuming models for the high-energy emission beam and its relation to the radio beam. Future gamma-ray pulsar detections by AGILE and GLAST together with the recent large rise in the radio pulsar population will give greatly improved statistics. The relative numbers of radio and gamma-ray pulsars detected in the plane and in the Gould Belt populations will provide an important discriminator between models of high-energy emission and will profoundly affect the numbers and birth rate of pulsars in the Galaxy.