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arXiv 1906.04592astro-ph.HEastro-ph.GAastro-ph.SR
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在SMC中有针对性地寻找年轻的射电望远镜:发现两个新的射电望远镜

Targeted search for young radio pulsars in the SMC: Discovery of two new pulsars

N. Titus, B. W. Stappers, V. Morello, M. Caleb, M. D. Filipovic, V. A. McBride, W. C. G. Ho, D. A. H. Buckley

摘要:

我们报告了十多年来在小麦哲伦星云(SMC)中发现的第一个旋转动力行星。PSR J 0043 -73和PSR J 0052 -72是在对MCSNR J 0127 -7332的帕克斯多波束(PMB)巡天中发现的,还有5个新的、光学选择的超新星遗迹(SNR)候选者是由XMM牛顿巡天发现的。除了候选者,我们调整了PMB旋转,包括额外的9个SNR和脉冲星风星云。我们使用PRESTO的傅立叶分析搜索年轻的恒星(1 - 200 ms),以及使用快速折叠算法搜索更长周期的恒星(200 ms - 360 s)。我们有针对性的调查有一个极限通量密度为0.039毫焦耳的周期大于50毫秒。虽然不是主要的目标,这次搜索它也是敏感的毫秒彗星。PSR J 0043 -73的周期和色散测量值分别为937.42937(26)ms和115.1(3.4)pc cm $^{-3}$,PSR J 0052 -72的周期为191.444328(46)ms,DM为158.6(1.6)pc cm $^{-3}$。

英文摘要:

We report the first rotation powered pulsars discovered in the Small Magellanic Cloud (SMC) in more than a decade. PSR J0043-73 and PSR J0052-72 were discovered during a Parkes Multi-Beam (PMB) survey of MCSNR J0127-7332, and five new, optically selected, supernova remnant (SNR) candidates identified by the XMM Newton survey. In addition to the candidates, we adjusted the PMB rotation to include an additional nine SNRs and pulsar wind nebulae. We searched for young pulsars (1 - 200 ms) employing a Fourier analysis with PRESTO, as well as a search for longer period pulsars (200 ms - 360 s) with a fast folding algorithm. Our targeted survey had a limiting flux density of 0.039 mJy for periods greater than 50 ms. Although not the main target of this search it was also sensitive to millisecond pulsars. PSR J0043-73 has a period and dispersion measure of 937.42937 (26) ms and 115.1 (3.4) pc cm$^{-3}$ respectively, and PSR J0052-72 has a period of 191.444328 (46) ms and a DM of 158.6 (1.6) pc cm$^{-3}$.

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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