论文标题
我们可以从FRB 200428中学到什么？
What can we learn from FRB 200428?
论文作者
论文摘要
SGR 1935+2154的两个无线电脉冲（TRP）由\ cite {bkrmhb}检测到，\ cite {2020arxiv200510324t}具有与宇宙学快速无线电爆发（FRB）的特征相似的特征。许多作者直接将TRP称为FRB 200428，而无需仔细考虑两个问题。 （1）TRP是否只有两个正常无线电脉冲的更明亮的子泵，喜欢在爆发过程中其他磁铁中看到的正常无线电脉冲？ （2）如果TRP是FRB的两个爆发，这是否使其他FRB难以理解？在本文中，我们试图澄清这两个问题。首先，我们将这些TRP与以前观察到脉冲星和磁铁的正常无线电脉冲的观察结果，发现TRP应通过与正常无线电脉冲的不同机制产生。然后，我们通过假设TRP具有与定期重复FRB相同的来源，并发现定期重复FRB的周期性的起源不应由进动引起。否则，我们应该期望TRP不是FRB，至少TRP的起源与定期重复FRB的起源不同。
The two radio pulses (TRPs) from SGR 1935+2154 detected by \cite{BKRMHB} and \cite{2020arXiv200510324T} have similar features to that of cosmological fast radio bursts (FRBs). Many authors directly call the TRPs as FRB 200428 without consider two questions carefully. (1) Are the TRPs just two brighter subpulses of a normal radio pulse liking the normal radio pulses seen in other magnetars during their outburst? (2) If the TRPs are two bursts of an FRB, does this make other FRBs difficult to understand? In this paper, we try to clarify these two questions. First, we compare these TRPs with previous observations of normal radio pulses from pulsars and magnetars, and find that the TRPs should be produced by different mechanism from that of normal radio pulses. We then investigate the second question by assuming the TRPs have the same origin as that of periodically repeating FRBs and find that the origin of the periodicity of periodically repeating FRBs should not be induced by precession. Otherwise, we should expect that the TRPs are not an FRB, at least the TRPs don't have the same origin as that of periodically repeating FRBs.
