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arXiv 0901.3570astro-ph.SR
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用新技术发现28颗脉冲星

Discovery of 28 pulsars using new techniques for sorting pulsar candidates

M. J. Keith, R. P. Eatough, A. G. Lyne, M. Kramer, A. Possenti, F. Camilo, R. N. Manchester

摘要:

现代脉冲星巡天产生了数百万个候选脉冲星,远远超过了单个脉冲星的观测能力。基于检测的信噪比来过滤这些候选的传统方法不能容易地区分干扰信号和干扰信号。我们开发了一种使用一系列启发式方法对候选项进行评分的新方法,这些方法测试信号的脉冲星类属性。这显著地增加了对弱的相干信号和周期接近于干扰信号的相干信号的灵敏度。通过应用这种技术和其他技术对帕克斯多波束脉冲星巡天先前处理的候选者进行排名,已经发现了28个以前未知的脉冲星。其中包括一个偏心双星系统和一个年轻的脉冲星,它在空间上与一个已知的超新星遗迹重合。

英文摘要:

Modern pulsar surveys produce many millions of candidate pulsars, far more than can be individually inspected. Traditional methods for filtering these candidates, based upon the signal-to-noise ratio of the detection, cannot easily distinguish between interference signals and pulsars. We have developed a new method of scoring candidates using a series of heuristics which test for pulsar-like properties of the signal. This significantly increases the sensitivity to weak pulsars and pulsars with periods close to interference signals. By applying this and other techniques for ranking candidates from a previous processing of the Parkes Multi-beam Pulsar Survey, 28 previously unknown pulsars have been discovered. These include an eccentric binary system and a young pulsar which is spatially coincident with a known supernova remnant.

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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