A comprehensive search for Long and Short Periodic Features from an Extremely Active Cycle of FRB 20240114A
Abstrak
Possible periodic features in fast radio bursts (FRBs) may provide insights into their astrophysical origins. Using extensive observations from the Five-hundred-meter Aperture Spherical radio Telescope (FAST), we conduct a multi-timescale periodicity search for the exceptionally active repeater FRB~20240114A. Our analysis is based on different datasets for different timescales: for short-timescale periodicity in Time of Arrivals (TOAs), we use 57 observations from January to August 2024; for long-timescale periodicity, we employ an extended TOA dataset comprising 111 observations spanning from January 2024 to October 2025; and for burst time series analysis, we utilize individual burst data from the 57 FAST observations. We identify three candidate short-timescale periodic signals (0.673~s, 0.635~s, and 0.536~s) with significances of $3.2σ$--$6σ$, each detected in two independent observations. On longer timescales, we detect a significant $143.40\pm7.19$-day periodicity with $5.2σ$ significance, establishing FRB~20240114A as a periodic repeater. In burst time series, we find quasi-periodic oscillations in the few hundred Hz range ($3.4σ$ and $3.7σ$) and periodic burst trains with periods of several to tens of milliseconds ($3σ$--$3.9σ$), though these periodic features appear transient and short-lived. The detection of periodic signals at these different time scales indicates that FRB 20240114A exhibits intriguing periodic self-similar characteristics. Despite the comprehensive dataset, no definitive periodicity linked to the source's rotation is confirmed, placing stringent constraints on the intrinsic source properties and the modulation mechanisms. All data are available via the Science Data Bank.
Topik & Kata Kunci
Penulis (59)
Dengke Zhou
Pei Wang
Jianhua Fang
Weiwei Zhu
Bing Zhang
Di Li
Yi Feng
Yong-Feng Huang
Ke-Jia Lee
Jinlin Han
Yuan-Chuan Zou
Jun-Shuo Zhang
Shuo Xiao
Rui Luo
Long-Xuan Zhang
Tian-Cong Wang
Wanjin Lu
Jinhuang Cao
Wenfei Yu
Bing Li
Chen-Chen Miao
Jintao Xie
Yunchuan Chen
Han Wang
Yuanhong Qu
Huaxi Chen
Yuhao Zhu
Shuo Cao
Xiang-Lei Chen
Chen Du
He Gao
Yu-Xiang Huang
Ye Li
Jian Li
Dong-Zi Li
Lin Lin
Xiaohui Liu
Jia-Wei Luo
Jiarui Niu
Chen-Hui Niu
Qingyue Qu
Shiyan Tian
Chao-Wei Tsai
Fayin Wang
Yi-Dan Wang
Wei-Yang Wang
Bojun Wang
Suming Weng
Qin Wu
Zi-Wei Wu
Heng Xu
Aiyuan Yang
Yuan-Pei Yang
Shihan Yew
Yong-Kun Zhang
Lei Zhang
Chunfeng Zhang
Rushuang Zhao
Dejiang Zhou
Akses Cepat
- Tahun Terbit
- 2025
- Bahasa
- en
- Sumber Database
- arXiv
- Akses
- Open Access ✓