论文标题

关于Meerkat I的千幽默阵列计划:科学目标和第一个结果

The Thousand-Pulsar-Array programme on MeerKAT I: Science objectives and first results

论文作者

Johnston, Simon, Karastergiou, A., Keith, M. J., Song, X., Weltevrede, P., Abbate, F., Bailes, M., Buchner, S., Camilo, F., Geyer, M., Hugo, B., Kramer, A. Jameson. M., Parthasarathy, A., Reardon, D. J., Ridolfi, A., Serylak, M., Shannon, R. M., Spiewak, R., van Straten, W., Krishnan, V. Venkatraman, Jankowski, F., Meyers, B. W., Oswald, L., Posselt, B., Sobey, C., Szary, A., van Leeuwen, J.

论文摘要

我们在这里报告了千脉冲阵列(TPA)计划的初步结果,这是Meerkat望远镜上大型调查项目“ Meertime”的一部分。干涉仪以856至1712〜MHz的频段中的绑定阵列模式使用,宽带与较大的收集区和低接收器温度相结合,使其成为无线电脉冲星研究的出色望远镜。 TPA是一个5年的项目,旨在观察(a)1000多个脉冲星以获得高保真脉冲曲线,(b)在多个时期内约有500个这些脉冲星,(c)来自数百个脉冲星的单脉冲序列的长序列。该程序的科学结果将包括测定脉冲星的几何形状,脉冲星磁层内无线电发射的位置,磁层和恒星的地壳之间的连接,对无线电发射本身的性质以及星际培养基的性质的严格约束。此处介绍的第一个结果包括更新的色散度量,首次得出的26种具有法拉第旋转措施的脉冲星以及迄今为止观察到的有趣发射现象的描述。

We report here on initial results from the Thousand Pulsar Array (TPA) programme, part of the Large Survey Project "MeerTime" on the MeerKAT telescope. The interferometer is used in tied-array mode in the band from 856 to 1712~MHz, and the wide band coupled with the large collecting area and low receiver temperature make it an excellent telescope for the study of radio pulsars. The TPA is a 5 year project which aims to observe (a) more than 1000 pulsars to obtain high-fidelity pulse profiles, (b) some 500 of these pulsars over multiple epochs, (c) long sequences of single-pulse trains from several hundred pulsars. The scientific outcomes from the programme will include determination of pulsar geometries, the location of the radio emission within the pulsar magnetosphere, the connection between the magnetosphere and the crust and core of the star, tighter constraints on the nature of the radio emission itself as well as interstellar medium studies. First results presented here include updated dispersion measures, 26 pulsars with Faraday rotation measures derived for the first time and a description of interesting emission phenomena observed thus far.

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