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arXiv 1304.0976astro-ph.HEastro-ph.IM
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用LOFAR探测空气簇射辐射

Detecting Radio Emission from Air Showers with LOFAR

Anna Nelles, Stijn Buitink, Arthur Corstanje, Emilio Enriquez, Heino Falcke, Wilfred Frieswijk, Jörg Hörandel, Maaijke Mevius, Satyendra Thoudam, Pim Schellart,… 展开作者

Anna Nelles, Stijn Buitink, Arthur Corstanje, Emilio Enriquez, Heino Falcke, Wilfred Frieswijk, Jörg Hörandel, Maaijke Mevius, Satyendra Thoudam, Pim Schellart, Olaf Scholten, Sander ter Veen, Martin van den Akker, The LOFAR Collaboration

摘要:

LOFAR(低频阵列)是世界上最大的射电望远镜,用于观测10至240 MHz的低频无线电发射。LOFAR除了用作干涉仪阵列外,现在还经常用于通过无线电发射探测宇宙射线引起的空气簇射。位于荷兰的LOFAR核心的天线密度高于任何专门的宇宙射线无线电实验。在$12 \mathrm{km}^2$的一个区域内安装了2300多个天线。它们以前所未有的精度测量空气簇射的无线电发射,因此,为解开导致空气簇射中无线电发射的物理过程提供了绝佳的机会。在进行天文观测的同时,LOFAR由一组粒子探测器触发,记录包含宇宙射线脉冲的时间序列。自2011年6月以来,LOFAR一直在测量宇宙射线。我们提供了第一年数据的结果。

英文摘要:

LOFAR (the Low Frequency Array) is the largest radio telescope in the world for observing low frequency radio emission from 10 to 240 MHz. In addition to its use as an interferometric array, LOFAR is now routinely used to detect cosmic ray induced air showers by their radio emission. The LOFAR core in the Netherlands has a higher density of antennas than any dedicated cosmic ray experiment in radio. On an area of $12 \mathrm{km}^2$ more than 2300 antennas are installed. They measure the radio emission from air showers with unprecedented precision and, therefore, give the perfect opportunity to disentangle the physical processes which cause the radio emission in air showers. In parallel to ongoing astronomical observations LOFAR is triggered by an array of particle detectors to record time-series containing cosmic-ray pulses. Cosmic rays have been measured with LOFAR since June 2011. We present the results of the first year of 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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