Parkes observations for project P871 semester 2017APRS

Fast Radio Bursts (FRBs) are bright, millisecond-duration radio pulses hypothesized to originate at cosmological distances. To date, one FRB has been seen to repeat but their origins remain a puzzling mystery. Some have proposed FRBs come from Crab-like pulsar giant pulses or periods of high activity of distant magnetars. Both mechanisms would generate observable subsequent FRB-like events. In this proposal we directly test this hypothesis by monitoring the fields of two known FRBs to search for repeating pulses that may explain their progenitors. We target two sources with existing multi-wavelength archival images of the field and small DM-derived distances.

快速射电暴（Fast Radio Bursts, FRBs）是一类明亮且持续时长仅毫秒级的射电脉冲，学界普遍推测其起源于宇宙学距离之外。截至目前，仅观测到一例重复快速射电暴，但此类暴的起源仍是一项未解之谜。部分学者提出，FRBs可能源自蟹状星云型脉冲星的巨脉冲，或是遥远磁星的高活跃周期。这两种机制均可产生可被观测到的后续类FRB事件。在本项目申请中，我们将通过监测两例已知FRB的天区，搜寻可解释其前身天体的重复脉冲信号，以此直接检验上述假说。本次研究选定两个源，其天区已留存有多波段存档观测图像，且具备通过弥散量（Dispersion Measure, DM）推导得到的距离参数。