The detection of life beyond Earth is an ongoing scientific pursuit, with profound implications. One approach, known as the search for extraterrestrial intelligence (SETI), seeks to find engineered signals (‘technosignatures’) that indicate the existence of technologically capable life beyond Earth. Here, we report on the detection of a narrowband signal of interest at ~982 MHz, recorded during observations towards Proxima Centauri with the Parkes Murriyang radio telescope. This signal, BLC1, has characteristics broadly consistent with hypothesized technosignatures and is one of the most compelling candidates to date. Analysis of BLC1—which we ultimately attribute to being an unusual but locally generated form of interference—is provided in a companion paper. Nevertheless, our observations of Proxima Centauri are a particularly sensitive search for radio technosignatures towards a stellar target.

探测地球以外的生命是一项持续的科学追求，具有深远的意义。一种方法，称为寻找外星智能（SETI），旨在寻找表明地球以外存在技术能力生命的工程信号（“技术签名”）。在这里，我们报告了在大约 982 MHz 处检测到感兴趣的窄带信号，该信号是在使用 Parkes Murriyang 射电望远镜对 Proxima Centauri 进行观测期间记录的。这个信号，BLC1，具有与假设的技术签名大体一致的特征，是迄今为止最引人注目的候选者之一。BLC1 的分析——我们最终将其归因于一种不寻常但本地产生的干扰形式——在一篇配套论文中提供。尽管如此，