论文标题
通过更新的Macquart关系，从chime/FRB目录1发出快速无线电爆发的光度分布
Luminosity distribution of fast radio bursts from CHIME/FRB Catalog 1 by means of the updated Macquart relation
论文作者
论文摘要
快速无线电爆发（FRB）是持续几个微秒至毫秒的极强无线电耀斑，并来自宇宙学距离的身份不明的物体，其中大多数只能看到一次。基于最近在频带400-800 MHz的频带/FRB目录1中发表的数据，我们分析了125个显然具有较低分散度度量（DM）的奇异FRB，并发现其发光度的分布遵循统计测试的对数正态形式。在我们的亮度测量中，通过使用Macquart关系估计FRB距离，该关系是为8个局部FRB获得的，并且在添加了最新10个新的局部FRB后，我们发现它仍然适用于18个来源。此外，我们测试了亮度分布到Macquart关系的有效性，并发现随着不确定性的增加，对数正态特征会降低。此外，我们将这些明显的非重复者的发光度与先前观察到的10个重复的FRB的发光度在低DM处的亮度，并指出它们属于不同的对数正态分布，而非重复者的平均发光度比Repeaters的平均亮度大两倍。因此，从两个不同的对数正态分布中，可以暗示FRB的不同机制。
Fast radio bursts (FRBs) are extremely strong radio flares lasting several micro- to milliseconds and come from unidentified objects at cosmological distances, most of which are only seen once. Based on recently published data in the CHIME/FRB Catalog 1 in the frequency bands 400-800 MHz, we analyze 125 apparently singular FRBs with low dispersion measure (DM) and find that the distribution of their luminosity follows a lognormal form according to statistical tests. In our luminosity measurement, the FRB distance is estimated by using the Macquart relation which was obtained for 8 localized FRBs, and we find it still applicable for 18 sources after adding the latest 10 new localized FRBs. In addition, we test the validity of the luminosity distribution up to the Macquart relation and find that the lognormal form feature decreases as the uncertainty increases. Moreover, we compare the luminosity of these apparent non-repeaters with that of the previously observed 10 repeating FRBs also at low DM, noting that they belong to different lognormal distributions with the mean luminosity of non-repeaters being two times greater than that of repeaters. Therefore, from the two different lognormal distributions, different mechanisms for FRBs can be implied.
