Hints of a universal width–energy relation for classified fast radio bursts
Hints of a universal width–energy relation for classified fast radio bursts
复制标题
分类快速无线电爆发的通用宽度与能量关系的提示
DOI：
10.1051/0004-6361/202243042
复制
发表时间：
2022
影响因子：
6.5
通讯作者：
Dai Zi-Gao
中科院分区：
文献类型：
--
作者：
Xiao Di;Dai Zi-Gao
近年来，快速射电暴（FRB）的总可用样本量一直在稳步增长，这为从统计角度研究FRB提供了便利。与此同时，FRB的分类是目前迫切需要解决的问题。我们建议爆发的亮度温度可以作为一个理想的分类标准。在这项工作中，我们收集了所有本地化FRB的可用数据，并且我们发现三个重复FRB的固有脉冲宽度和突发能量之间的正相关关系，Ti Eν0.25，这与我们之前单独使用FRB 20121102A数据的工作类似。临界线TB，cri被发现不同的FRB，这可能反映了源属性的差异。这种关系可以对主流辐射机制施加强有力的约束。很明显，相干曲率辐射和同步脉塞辐射都没有达到再现这种关系所需的高亮度温度的能力。
The total available sample of fast radio bursts (FRBs) has been growing steadily in recent years, facilitating the study of FRBs from a statistical point of view. At the same time, the classification of FRBs is currently an imperative issue. We propose that the brightness temperature of bursts can serve as an ideal criterion for classification. In this work, we gather the available data for all localized FRBs and we find a positive relation between the intrinsic pulse width and burst energy, Ti ∝ Eν0.25, for three repeating FRBs that is similar to that of our previous work using FRB 20121102A data alone. The critical line TB, cri is found to vary for different FRBs, which may reflect the differences in source properties. This relation can put strong constraints on mainstream radiation mechanisms. It is evident that neither the coherent curvature radiation or synchrotron maser radiation have the capability to reach the high brightness temperature required to reproduce this relation.