arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2103.13838astro-ph.HEastro-ph.GAastro-ph.IM
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用Parkes radio telescope上的超宽带接收机对亮星进行偏振普查

A polarization census of bright pulsars using the Ultra-Wideband Receiver on the Parkes radio telescope

C. Sobey, S. Johnston, S. Dai, M. Kerr, R. N. Manchester, L. S. Oswald, A. Parthasarathy, R. M. Shannon, P. Weltevrede

摘要:

我们提出了高信噪比,全偏振脉冲轮廓40明亮,“慢”旋转(非回收)的卫星使用新的超宽带低频(UWL; 704-4032 MHz)接收器的帕克斯射电望远镜。我们获得了最新的和准确的星际介质参数对这些恒星(色散措施和法拉第旋转措施),并揭示了法拉第色散对PSR J 1721 -3532星际散射造成的。我们发现脉冲轮廓的一般趋势,包括降低分数线偏振和圆偏振度随频率的增加,与以前的研究一致,同时也揭示了新的功能和频率演变。这表明,可以得到的结果,使用UWL监测观测慢脉冲星,这是有价值的,以提高我们的理解脉冲星发射和干预星际介质。经校准的数据产品是公开的。

英文摘要:

We present high signal-to-noise, full polarization pulse profiles for 40 bright, 'slowly'-rotating (non-recycled) pulsars using the new Ultra-Wideband Low-frequency (UWL; 704-4032 MHz) receiver on the Parkes radio telescope. We obtain updated and accurate interstellar medium parameters towards these pulsars (dispersion measures and Faraday rotation measures), and reveal Faraday dispersion towards PSR J1721-3532 caused by interstellar scattering. We find general trends in the pulse profiles including decreasing fractional linear polarization and increasing degree of circular polarization with increasing frequency, consistent with previous studies, while also revealing new features and frequency evolution. This demonstrates results that can be obtained using UWL monitoring observations of slow pulsars, which are valuable for improving our understanding of pulsar emission and the intervening interstellar medium. The calibrated data products are publicly available.

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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