发表机构
Pierre Auger Collaboration（皮埃尔·奥热合作组）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
该研究介绍2025年部署于奥格天文台的ARISE仪器，其以50-350 MHz宽频带、433米密间距天线设计，旨在实现100 PeV以上近垂直空气簇射的高效探测，为宇宙线研究提供低系统不确定性的观测数据。
AI 中文摘要
位于阿根廷皮埃尔·奥格天文台的增强型射电阵列SKALA扩展（ARISE）于2025年部署，用于测量银道面到河外过渡能量区的宇宙线空气簇射。ARISE由18台SKALA-2天线组成，每台天线配备两个极化通道，部署在皮埃尔·奥格天文台增强区的一个表面探测器站100米范围内。该表面阵列区域的表面站间距更密，为433米，每个表面站均配备地下缪子探测器，其中一个表面探测器站为ARISE所有天线通道的同步读出提供触发。ARISE的宽频率范围为50至350 MHz，包含了空气簇射射电发射相对于银河射电背景的最佳信噪比子带，结合密集的天线间距，使其探测阈值相对较低，ARISE的目标是证明对100 PeV以上近垂直空气簇射的完全探测效率。作为奥格天文台现有射电探测器的优势，现有探测器对倾斜空气簇射更高效，而ARISE结合同一区域地下缪子探测器的符合测量，将为物理分析提供低系统不确定性。本报告将概述在皮埃尔·奥格天文台运行的ARISE仪器设备，并阐述其科学目标。
英文摘要
The Auger Radio Infill SKALA Extension (ARISE) at the Pierre Auger Observatory in Argentina was deployed in 2025 and measures cosmic-ray air showers in the energy region of the Galactic-to-extragalactic transition. ARISE is comprised of 18 SKALA-2 antennas featuring two polarization channels each, deployed within $100\,$m of a surface detector station in the enhancement area of the Pierre Auger Observatory. This area of the surface array features a denser spacing of $433\,$m between surface stations, each equipped with underground muon detectors. One of these surface detector stations provides a trigger for simultaneous readout of all ARISE antenna channels. The wide frequency range of ARISE, from $50$ to $350\,$MHz, includes the sub-band of optimum signal-to-noise ratio for air-shower radio emission against the Galactic radio background. In combination with the dense antenna spacing, this enables a relatively low detection threshold, and ARISE aims at demonstrating full detection efficiency for near-vertical air showers above $100\,$ PeV. As an advantage over the current radio detectors at Auger, which are more efficient for inclined air showers, this would enable low systematic uncertainties for physics analysis combining ARISE radio measurements with coincident measurements of the underground muon detectors in the same area. In this presentation, we will provide an overview over the ARISE instrumentation operating at the Pierre Auger Observatory and will outline the science goals.
CommentsProceedings of ARENA 2026
Journal refPoS(ARENA2026)002
