胥恒，中国科学院国家天文台副研究员。2022年获得北京大学博士学位，2022-2025年在中国科学院国家天文台从事博士后研究工作，随后加入国家天文台工作至今。主要研究方向和兴趣包括脉冲星计时、纳赫兹引力波探测、和包括快速射电暴及长周期射电在内的射电暂现源。Long period radio transients (LPTs) are a class of periodic radio sources with periods ranging from minutes to hours discovered in recent years. Since 2022, only about 20 LPTs have been discovered. While several of them are localized to be associated with optical white dwarf-M dwarf binaries, the central engine of most of them is not clear. In this talk, I will discuss the emission properties of LPTs and the similarities to pulsars and fast radio bursts (FRBs). I will also present our recent discovery of the extreme magnetoionic environment of a LPT, and discuss the implications of the results.