English
Related papers

Related papers: Unidentified FRBs in archival data

200 papers

Fast radio bursts (FRBs) are pulsed radio signals with a duration of milliseconds and a large dispersion measure (DM). Recent observations indicate that FRB 180916 and FRB 121102 show periodic activities. Some theoretical models have been…

High Energy Astrophysical Phenomena · Physics 2022-03-11 Y. J. Wei , Z. Y. Zhao , F. Y. Wang

We present a 400-800 MHz polarimetric analysis of 128 non-repeating fast radio bursts (FRBs) from the first CHIME/FRB baseband catalog, increasing the total number of FRB sources with polarization properties by a factor of ~3. 89 FRBs have…

Fast radio bursts (FRBs) are millisecond-duration transients of unknown origin, likely associated with compact astrophysical objects. We report evidence for a damped millisecond quasi-periodic structure in a non-repeat FRB~20190122C. The…

High Energy Astrophysical Phenomena · Physics 2026-01-08 Shuo Xiao , Zheng-Huo Jiang , Di Li

The detection of fast radio bursts (FRBs) in radio astronomy is a complex task due to the challenges posed by radio frequency interference (RFI) and signal dispersion in the interstellar medium. Traditional search algorithms are often…

Instrumentation and Methods for Astrophysics · Physics 2024-10-07 Yong-Kun Zhang , Di Li , Yi Feng , Chao-Wei Tsai , Pei Wang , Chen-Hui Niu , Hua-Xi Chen , Yu-Hao Zhu

Fast radio bursts (FRBs) are bright radio bursts originating at cosmological distances. Only three repeating FRBs FRB 20121102A, FRB 20190520B and FRB 20201124A among $\sim$ 60 known repeating FRBs have circular polarization. We observed…

We analyze the statistics of pulse arrival times in fast radio burst (FRB) 121102 and demonstrate that they are remarkably similar to statistics of magnetar high-energy short bursts. Motivated by this correspondence, we propose that…

High Energy Astrophysical Phenomena · Physics 2019-07-02 Zorawar Wadiasingh , Andrey Timokhin

Fast radio bursts (FRBs) are intense pulses with unknown origins. A subclass of repeating FRBs show some common features, such as associated compact persistent radio sources (PRSs), high burst rates, and large host-galaxy dispersion…

High Energy Astrophysical Phenomena · Physics 2025-12-09 F. Y. Wang , H. T. Lan , Z. Y. Zhao , Q. Wu , Y. Feng , S. X. Yi , Z. G. Dai , K. S. Cheng

The origin of fast radio bursts (FRBs) still remains a mystery, even with the increased number of discoveries in the last three years. Growing evidence suggests that some FRBs may originate from magnetars. Large, single-dish telescopes such…

Fast radio bursts (FRBs), millisecond-duration bursts prevailing in the radio sky, are the latest big puzzle in the universe and have been a subject of intense observational and theoretical investigations in recent years. The rapid…

High Energy Astrophysical Phenomena · Physics 2024-01-05 Bing Zhang

Some repeating FRBs exhibit occasional extreme repetition rates, but very few show a sustained high activity level. One such hyperactive repeater is FRB 20220912A, which was discovered by CHIME/FRB Collaboration on 2022 September 12. Here,…

High Energy Astrophysical Phenomena · Physics 2026-01-01 Ajay Kumar , Yogesh Maan , Banshi Lal , Yash Bhusare , Shriharsh P. Tendulkar , Visweshwar Ram Marthi , Puja Majee

Fast radio bursts (FRBs) are highly energetic radio pulses from cosmological origins. Despite an abundance of detections, their nature remains elusive. At least a subset of FRBs is expected to repeat, as the daily FRB rate surpasses that of…

High Energy Astrophysical Phenomena · Physics 2020-03-04 Julian B. Muñoz , Vikram Ravi , Abraham Loeb

We present a synthesis of fast radio burst (FRB) morphology (the change in flux as a function of time and frequency) as detected in the 400-800 MHz octave by the FRB project on the Canadian Hydrogen Intensity Mapping Experiment (CHIME/FRB),…

FRB 121102, the first-known repeating fast radio burst (FRB) source, is associated with a dwarf host galaxy and compact, persistent radio source. In an effort to find other repeating FRBs, FIRST J141918.9+394036 (hereafter FIRST J1419+3940)…

High Energy Astrophysical Phenomena · Physics 2020-04-10 Kenzie Nimmo , Vishal Gajjar , Jason W. T. Hessels , Casey J. Law , Ryan S. Lynch , Andrew D. Seymour , Laura G. Spitler

The newly discovered 16.35 days period for repeating FRB 180916.J0158+65 provides an essential clue for understanding the sources and emission mechanism of repeating FRBs. Many models propose that the periodically repeating FRBs might be…

High Energy Astrophysical Phenomena · Physics 2020-06-30 Xianfei Zhang , He Gao

In addition to fast radio burst (FRB) searches carried out using dedicated surveys, a number of radio observatories take advantage of commensal opportunities with large facilities in which observations for other projects can be searched for…

Fast Radio Bursts (FRBs) are energetic phenomena that have significant implications for understanding fundamental physics and the universe. Recent observations of FRB 121102, FRB 20220912A, and FRB 20201124A by the Five-hundred-meter…

High Energy Astrophysical Phenomena · Physics 2024-11-07 Yan-Qi Du , Ping Wang , Li-Ming Song , Shao-Lin Xiong

Fast radio bursts (FRBs) are short pulses observed in radio frequencies usually originating from cosmological distances. The discovery of FRB 200428 and its X-ray counterpart from the Galactic magnetar SGR J1935+2154 suggests that at least…

High Energy Astrophysical Phenomena · Physics 2022-11-08 Mingyu Ge , Yuan-Pei Yang , Fangjun Lu , Shiqi Zhou , Long Ji , Shuangnan Zhang , Bing Zhang , Liang Zhang , Pei Wang , Kejia Lee , Weiwei Zhu , Jian Li , Xian Hou , Qiao-Chu Li

We present 41 bursts from the first repeating fast radio burst discovered (FRB 121102). A deep search has allowed us to probe unprecedentedly low burst energies during two consecutive observations (separated by one day) using the Arecibo…

High Energy Astrophysical Phenomena · Physics 2019-06-05 K. Gourdji , D. Michilli , L. G. Spitler , J. W. T. Hessels , A. Seymour , J. M. Cordes , S. Chatterjee

Fast radio bursts are astronomical radio flashes of unknown physical nature with durations of milliseconds. Their dispersive arrival times suggest an extragalactic origin and imply radio luminosities orders of magnitude larger than any…