快速无线电爆发来源的周期性活动

论文标题

快速无线电爆发来源的周期性活动

Periodic activity from a fast radio burst source

论文作者

FRB Collaboration, Amiri, M., Andersen, B. C., Bandura, K. M., Bhardwaj, M., Boyle, P. J., Brar, C., Chawla, P., Chen, T., Cliche, J. F., Cubranic, D., Deng, M., Denman, N. T., Dobbs, M., Dong, F. Q., Fandino, M., Fonseca, E., Gaensler, B. M., Giri, U., Good, D. C., Halpern, M., Hessels, J. W. T., Hill, A. S., Höfer, C., Josephy, A., Kania, J. W., Karuppusamy, R., Kaspi, V. M., Keimpema, A., Kirsten, F., Landecker, T. L., Lang, D. A., Leung, C., Li, D. Z., Lin, H. -H., Marcote, B., Masui, K. W., Mckinven, R., Mena-Parra, J., Merryfield, M., Michilli, D., Milutinovic, N., Mirhosseini, A., Naidu, A., Newburgh, L. B., Ng, C., Nimmo, K., Paragi, Z., Patel, C., Pen, U. -L., Pinsonneault-Marotte, T., Pleunis, Z., Rafiei-Ravandi, M., Rahman, M., Ransom, S. M., Renard, A., Sanghavi, P., Scholz, P., Shaw, J. R., Shin, K., Siegel, S. R., Singh, S., Smegal, R. J., Smith, K. M., Stairs, I. H., Tendulkar, S. P., Tretyakov, I., Vanderlinde, K., Wang, H., Wang, X., Wulf, D., Yadav, P., Zwaniga, A. V.

论文摘要

快速无线电爆发（FRB）是明亮的，毫秒的无线电瞬变，起源于外层次距离。他们的起源未知。一些FRB消息来源发出重复爆发，排除这些事件的灾难性起源。尽管在重复爆发时间以从毫秒到许多天的时间尺度上寻找周期性，但迄今已观察到这些爆发是偶尔出现的，虽然聚集，但没有正常的模式。在这里，我们报告了从重复的FRB 180916.J0158+65检测到的$ 16.35 \ pm0.15 $ PM0.15美元的周期性（或可能是该周期性的更高频率别名）。加拿大氢强度映射实验快速无线电/FRB检测到的J0158+65。在从2018年9月16日到2020年2月4日记录的38次爆发中，我们发现所有爆发都以5天的阶段窗口到达，而50％的爆发则到达0.6天的阶段窗口。我们的结果提出了一种周期性调节本身或通过外部放大或吸收的机制，以及纯粹散发零星过程的模型。

Fast radio bursts (FRBs) are bright, millisecond-duration radio transients originating from extragalactic distances. Their origin is unknown. Some FRB sources emit repeat bursts, ruling out cataclysmic origins for those events. Despite searches for periodicity in repeat burst arrival times on time scales from milliseconds to many days, these bursts have hitherto been observed to appear sporadically, and though clustered, without a regular pattern. Here we report the detection of a $16.35\pm0.15$ day periodicity (or possibly a higher-frequency alias of that periodicity) from a repeating FRB 180916.J0158+65 detected by the Canadian Hydrogen Intensity Mapping Experiment Fast Radio Burst Project (CHIME/FRB). In 38 bursts recorded from September 16th, 2018 through February 4th, 2020, we find that all bursts arrive in a 5-day phase window, and 50% of the bursts arrive in a 0.6-day phase window. Our results suggest a mechanism for periodic modulation either of the burst emission itself, or through external amplification or absorption, and disfavour models invoking purely sporadic processes.

下载PDF全文

下载文献需遵守相关版权规定

论文标题