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The origin of fast radio bursts (FRBs), the brightest cosmic radio explosions, is still unknown. Bearing critical clues to FRBs' origin, the long-term evolution of FRBs has yet to be confirmed, since the field is still young and most FRBs…

Recently, one fast radio burst, FRB 200428, was detected from the Galactic magnetar SGR J1935+2154 during one X-ray burst. This suggests that magnetars can make FRBs. On the other hand, the majority of X-ray bursts from SGR J1935+2154 are…

High Energy Astrophysical Phenomena · Physics 2021-01-27 Bing Zhang

Since their discovery in 2007, much effort has been devoted to uncovering the sources of the extragalactic, millisecond-duration fast radio bursts (FRBs). A class of neutron star known as magnetars is a leading candidate source of FRBs.…

High Energy Astrophysical Phenomena · Physics 2020-11-11 Christopher D. Bochenek , Vikram Ravi , Konstantin V. Belov , Gregg Hallinan , Jonathon Kocz , Shri R. Kulkarni , Dan L. McKenna

Fast radio bursts (FRBs) are a newly discovered class of radio transients that emerge from cosmological sources and last for $\sim$ a few milliseconds. However, their origin remains a highly debated topic in astronomy. Among the plethora of…

High Energy Astrophysical Phenomena · Physics 2023-10-31 Mohit Bhardwaj , Antonella Palmese , Ignacio Magaña Hernandez , Virginia D'Emilio , Soichiro Morisaki

Fast radio bursts (FRBs) are radio transients of extragalactic origin lasting for about a few to several milli-seconds. We have analyzed both non-CHIME and CHIME FRB data. To circumvent the absence of measured fluence and flux density of…

High Energy Astrophysical Phenomena · Physics 2024-12-24 Nidhi Saini , Patrick Das Gupta

The physical origin of fast radio bursts (FRBs) is still unknown. Multiwavelength and polarization observations of an FRB source would be helpful to diagnose its progenitor and environment. So far only the first repeating source FRB 121102…

High Energy Astrophysical Phenomena · Physics 2020-05-27 Yuan-Pei Yang , Qiao-Chu Li , Bing Zhang

Nearly 700 fast radio burst (FRB) sources have been detected till now, among which 29 FRBs are found to burst out repeatedly. Although a firm connection between at least some FRBs and magnetars has been established, the trigger mechanism…

High Energy Astrophysical Phenomena · Physics 2023-10-31 Chen-Ran Hu , Yong-Feng Huang

The total event number of fast radio bursts (FRBs) is accumulating rapidly with the improvement of existing radio telescopes and the completion of new facilities. Especially, the Five-hundred-meter Aperture Spherical radio Telescope (FAST)…

High Energy Astrophysical Phenomena · Physics 2022-01-12 Di Xiao , Zi-Gao Dai

Fast Radio Bursts (FRBs) are energetic millisecond radio bursts at cosmological distances, whose underlying engine is not identified. Among a sub-population that emit repeated radio bursts, a handful were associated with a persistent radio…

High Energy Astrophysical Phenomena · Physics 2025-01-27 Xian Zhang , Wenfei Yu , Zhen Yan , Yi Xing , Bing Zhang

The megajansky radio burst, FRB 20200428, and other bright radio bursts detected from the Galactic source SGR J1935+2154 suggest that magnetars can make fast radio bursts (FRBs), but the emission site and mechanism of FRB-like bursts are…

Fast radio bursts (FRBs) are bright, coherent, short-duration radio transients of as-yet unknown extragalactic origin. FRBs exhibit a wide variety of spectral, temporal and polarimetric properties, which can unveil clues into their emission…

High Energy Astrophysical Phenomena · Physics 2021-01-06 K. Nimmo , J. W. T. Hessels , A. Keimpema , A. M. Archibald , J. M. Cordes , R. Karuppusamy , F. Kirsten , D. Z. Li , B. Marcote , Z. Paragi

Fast Radio Bursts (FRBs) are highly energetic radio transients with millisecond duration, whose physical origin is still unknown. Many models consider magnetars as possible FRB sources, supported by the observational association of FRBs…

High Energy Astrophysical Phenomena · Physics 2024-09-25 Barbara Patricelli , Maria Grazia Bernardini , Matteo Ferro

Fast Radio Burst (FRB) 20250316A, detected by CHIME on 2025 March 16 with a fluence of $1.7\pm0.1~\mathrm{Jy\,ms}$ and a dispersion measure of $161.3\pm0.4~\mathrm{pc\,cm^{-3}}$, ranks among the brightest extragalactic FRBs at $\sim 40$…

High Energy Astrophysical Phenomena · Physics 2025-09-04 Tao An , Ailing Wang , Yu-Chen Huang , Jia-Pei Feng , Yuanqi Liu , Zhongli Zhang , Zi-Gao Dai

Fast Radio Bursts (FRBs) are short-duration radio transients with mysterious origins. Since its uncertainty, there are very few FRBs that are observed by different instruments, simultaneously. This study presents a detailed analysis of a…

High Energy Astrophysical Phenomena · Physics 2025-07-24 Yuhao Zhu , Chenhui Niu , Shi Dai , Di Li , Pei Wang , Yi Feng , Jingwen Wu , Yongkun Zhang , Xianghan Cui , Junshuo Zhang , Jinhuang Cao

The spectra of repeating fast radio bursts (FRBs) are complex and time-variable, sometimes peaking within the observing band and showing a fractional emission bandwidth of about 10-30%. These spectral features may provide insight into the…

Fast Radio Bursts are millisecond-duration astronomical radio pulses of unknown physical origin that appear to come from extragalactic distances. Previous follow-up observations have failed to find additional bursts at the same dispersion…

Fast radio bursts (FRBs) are energetic millisecond phenomena in radio band. Polarimetric studies of repeating FRBs indicate that many of these sources occupy extreme and complex magneto-ionized environments. Recently, a frequency-dependent…

High Energy Astrophysical Phenomena · Physics 2023-09-14 Wan-Jin Lu , Zhen-Yin Zhao , F. Y. Wang , Z. G. Dai

Fast radio bursts (FRBs) are millisecond-duration, extragalactic radio flashes of unknown physical origin. FRB 121102, the only known repeating FRB source, has been localized to a star-forming region in a dwarf galaxy at redshift z = 0.193,…