Parkes observations for project P1185 semester 2023APRS_17

Ultra-long period neutron stars (ULPNSs) are an emerging class of objects that have sparked interest and curiosity in the fast transient community. Along with standard magnetars, they have been theorised to be potential progenitors of the enigmatic fast radio bursts (FRBs). The MeerTRAP project at the MeerKAT radio telescope is uncovering several magnetar and ultra-long period neutron star candidates, an example of which is PSR J0901-4046 with a period of 76s. Continued long-term monitoring of PSR J0901-4046 has shown it to be potentially transitioning into radio quiescence. The proposed observations will enable us to continue to monitor and characterise the decline in flux density. We have also discovered two new candidates MTP0027 and MTP0068 with periods of ~10 seconds and ~5 seconds respectively. Both sources exhibit magnetar-like pulse morphology and have only been detected in one epoch with MeerKAT. We propose to continue monitoring these sources to re-detect pulses and study their spectro-temporal-polarimetric properties.

超长周期中子星（ULPNSs）是一类新兴天体，在快速暂现源研究领域引发了广泛关注与好奇。与标准磁星一样，理论认为它们可能是神秘快速射电暴（FRBs）的前身天体。MeerKAT射电望远镜开展的MeerTRAP项目正发现多个磁星与超长周期中子星候选体，其中一例为周期76秒的PSR J0901-4046。对PSR J0901-4046的持续长期监测显示，它可能正过渡到射电宁静态。拟议的观测将使我们能够持续监测并表征其流量密度的下降过程。我们还发现了两个新候选体MTP0027和MTP0068，其周期分别约为10秒和5秒。这两个源均表现出类磁星脉冲形态，且仅在MeerKAT的一个观测历元中被探测到。我们拟继续监测这些源，以重新探测脉冲并研究其光谱-时间-偏振特性。