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LOFAR: Detecting Cosmic Rays with a Radio Telescope

机译:LOFAR:用射电望远镜探测宇宙射线

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LOFAR (the Low Frequency Array), a distributed digital radio telescope with stations in the Netherlands,Germany, France, Sweden, and the United Kingdom, is designed to enable full-sky monitoring of transient radio sources.These capabilities are ideal for the detection of broadband radio pulses generated in cosmic ray air showers. The coreof LOFAR consists of 24 stations within 4 square kilometers, and each station contains 96 low-band antennas and 48high-band antennas. This dense instrumentation will allow detailed studies of the lateral distribution of the radio signalin a frequency range of 10-250 MHz. Such studies are key to understanding the various radio emission mechanismswithin the air shower, as well as for determining the potential of the radio technique for primary particle identification.We present the status of the LOFAR cosmic ray program, including the station design and hardware, the triggering andfiltering schemes, and our initial observations of cosmic-ray-induced radio pulses.
机译:LOFAR(低频阵列)是一种分布式数字射电望远镜,在荷兰,德国,法国,瑞典和英国设有站,旨在对瞬态无线电源进行全天​​候监视,这些功能非常适合探测宇宙射线风淋中产生的宽带无线电脉冲的变化。 LOFAR的核心包括4平方公里内的24个站,每个站包含96个低频带天线和48个高频带天线。这种密集的仪器将允许对10-250 MHz频率范围内无线电信号的横向分布进行详细研究。此类研究对于了解空气淋浴内的各种无线电发射机制以及确定无线电技术在一次粒子识别中的潜力至关重要。我们介绍了LOFAR宇宙射线程序的状态,包括台站设计和硬件,触发和滤波方案,以及我们对宇宙射线感应无线电脉冲的初步观察。

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