arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0811.3605astro-ph
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中子星出生时的旋转速度有多快?

How rapidly do neutron stars spin at birth?

Roberto Soria, Rosalba Perna, David Pooley, Luigi Stella

摘要:

我们研究了附近星系中老化的历史核心坍缩超新星的X射线特性,使用钱德拉,XMM-牛顿和斯威夫特的档案数据。我们在SN 1968 D和其他一些来源中发现了年轻X射线脉冲星的可能证据,但没有一个比~几个10^{37}尔格/秒更亮。我们比较了X射线脉冲星光度分布的观测极限与一系列出生参数的蒙特卡罗模拟结果。我们的结论是,一个脉冲星人口占主导地位的周期<~ 40毫秒在出生时被排除的数据。

英文摘要:

We have studied the X-ray properties of ageing historical core-collapse supernovae in nearby galaxies, using archival data from Chandra, XMM-Newton and Swift. We found possible evidence of a young X-ray pulsar in SN 1968D and in few other sources, but none more luminous than ~ a few 10^{37} erg/s. We compared the observational limits to the X-ray pulsar luminosity distribution with the results of Monte Carlo simulations for a range of birth parameters. We conclude that a pulsar population dominated by periods <~ 40 ms at birth is ruled out by the data.

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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