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arXiv 0803.0677astro-ph
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新的脉冲星自转测量和银河系磁场

New pulsar rotation measures and the Galactic magnetic field

Aristeidis Noutsos, Simon Johnston, Michael Kramer, Aris Karastergiou

摘要:

我们使用Parkes 64-m射电望远镜的20-cm接收器测量了150个脉冲星旋转测度(RM)样本。在我们的样本中,有46颗脉冲星的RM值以前没有公布过,而104颗脉冲星的RM值已经过修订。我们使用了一种新的二次拟合算法,以获得一个准确的RM从校准的偏振分布记录在256 MHz的接收器带宽。新的数据与以前已知的色散测量(DM)和NE 2001电子密度模型结合使用,以研究银河系磁场的方向和大小的模型。

英文摘要:

We measured a sample of 150 pulsar Rotation Measures (RMs) using the 20-cm receiver of the Parkes 64-m radio telescope. 46 of the pulsars in our sample have not had their RM values previously published, whereas 104 pulsar RMs have been revised. We used a novel quadratic fitting algorithm to obtain an accurate RM from the calibrated polarisation profiles recorded across 256 MHz of receiver bandwidth. The new data are used in conjunction with previously known Dispersion Measures (DMs) and the NE2001 electron-density model to study models of the direction and magnitude of the Galactic magnetic field.

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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