AI 中文总结
该研究利用MeerKAT射电望远镜的共生访问，通过BLUSE系统进行自主技术特征调查，处理所有天线带宽，将数据信道化、合成波束并搜索特征，已处理超120万个指向数据，展示了快速经济高效的调查方式及相关成果。
AI 中文摘要
寻找外星智慧（SETI）是一项持续的工作，旨在检测技术特征，即地球以外有技术能力生命的证据。开展全面的SETI计划需要大量望远镜观测时间，这必须与特定天文台的科学目标相平衡。幸运的是，许多现代射电望远镜提供对其产生数据的共生访问，允许多个科学计划并行运行。南非的MeerKAT射电望远镜通过多播以太网组提供从每个天线数字化仪到主信道化器（F引擎）等一系列组件的共生访问。本文描述了MeerKAT的突破聆听用户提供设备（BLUSE）系统，该系统利用多播以太网进行自主共生技术特征调查，处理来自所有天线的全部可用带宽。其主要操作模式是将传入的F引擎数据向上信道化到约1Hz分辨率，在感兴趣的物体上合成相干波束，并在所得数据中搜索技术特征。自2022年以来，BLUSE已自主处理了来自在超过120万个单独指向（包括重复访问）上合成的相干波束的数据。BLUSE展示了射电望远镜阵列上的共生技术特征调查如何提供一种快速且经济高效的方式来提高技术特征调查的速率。本文描述了BLUSE的架构，提供了验证其特征和性能的实验证据，并量化了其过去几年的观测进展。我们还讨论了BLUSE的技术演变，审视了面临和解决的挑战，并考虑了未来研发的途径。
英文摘要
The search for extraterrestrial intelligence (SETI) is an ongoing effort to detect technosignatures, evidence of technologically capable life beyond Earth. Conducting a comprehensive SETI programme requires a large amount of telescope time, which must be balanced with the science goals of a given observatory. Fortunately, many modern radio telescopes offer commensal access to the data they produce, allowing multiple scientific programmes to operate in parallel. The MeerKAT radio telescope in South Africa provides commensal access to a range of components, from each antenna's digitiser to the main channeliser (F-engine), via multicast Ethernet groups. Here, we describe the Breakthrough Listen user-supplied equipment (BLUSE) system at MeerKAT, which leverages multicast Ethernet to conduct an autonomous commensal technosignature survey, processing the full available bandwidth from all antennas. Its primary mode of operation is to upchannelise the incoming F-engine data to ~1Hz resolution, synthesize coherent beams on objects of interest, and search the resultant data for technosignatures. Since 2022, BLUSE has autonomously processed data from coherent beams synthesized on more than 1.2 million individual pointings, including repeat visits. BLUSE demonstrates how commensal technosignature surveys on radio telescope arrays offer a rapid and cost-effective way to increase the rate at which technosignature surveys can be conducted. This article describes the architecture of BLUSE, provides experimental evidence validating its features and performance, and quantifies its observing progress over the past few years. We also discuss the technical evolution of BLUSE, examine challenges faced and addressed, and consider avenues for future research and development.
Comments11 pages, 11 figures
