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Fast radio bursts (FRBs) are extragalactic radio transients of extraordinary luminosity. Studying the diverse temporal and spectral behaviour recently observed in a number of FRBs may help determine the nature of the entire class. For…

Scenario of formation of fast radio bursts (FRBs) is proposed. Just like radio pulsars, sources of FRBs are magnetized neutron stars. Appearance of strong electric field in a magnetosphere of a neutron star is associated with close passage…

High Energy Astrophysical Phenomena · Physics 2017-12-14 Istomin Ya. N

Fast radio bursts (FRBs) are, as the name implies, short and intense pulses of radiation at wavelengths of roughly one metre. FRBs have extremely high brightness temperatures, which points to a coherent source of radiation. The energy of a…

High Energy Astrophysical Phenomena · Physics 2019-04-01 Almog Yalinewich , Mubdi Rahman , Alysa Obertas , Patrick C. Breysse

The V-FASTR experiment on the Very Long Baseline Array was designed to detect dispersed pulses of milliseconds duration, such as fast radio bursts (FRBs). We use all V-FASTR data through February 2015 to report V-FASTR's upper limits on the…

Fast Radio Bursts (FRBs) are short astrophysical transients of extragalactic origin. Their burst signal is dispersed by the free electrons in the large-scale-structure (LSS), leading to delayed arrival times at different frequencies.…

Cosmology and Nongalactic Astrophysics · Physics 2023-06-28 Robert Reischke , Steffen Hagstotz

We present microsecond-resolution, coherently-dedispersed, polarimetric measurements of 35 fast radio bursts (FRBs) detected during the Commensal Real-time ASKAP Fast Transients (CRAFT) incoherent sum (ICS) survey with the Australian Square…

We use the observed properties of fast radio bursts (FRBs) and a number of general physical considerations to provide a broad-brush model for the physical properties of FRB sources and the radiation mechanism. We show that the magnetic…

High Energy Astrophysical Phenomena · Physics 2017-05-03 Pawan Kumar , Wenbin Lu , Mukul Bhattacharya

Fast radio bursts (FRB) can arise from synchrotron maser emission at ultra-relativistic magnetized shocks, such as produced by flare ejecta from young magnetars. We combine PIC simulation results for the synchrotron maser with the dynamics…

High Energy Astrophysical Phenomena · Physics 2019-04-10 Brian D. Metzger , Ben Margalit , Lorenzo Sironi

Fast radio bursts (FRBs) are extragalactic, bright pulses of emission at radio frequency with milliseconds duration. Observationally, FRBs can be divided into two classes, repeating FRBs and non-repeating FRBs. At present, twenty repeating…

High Energy Astrophysical Phenomena · Physics 2020-04-22 G. Q. Zhang , S. X. Yi , F. Y. Wang

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

The energy and waiting time distributions are important properties for understanding the physical mechanism of repeating fast radio bursts (FRBs). Recently, the Five-hundred-meter Aperture Spherical radio Telescope (FAST) detected the…

High Energy Astrophysical Phenomena · Physics 2021-10-20 G. Q. Zhang , P. Wang , Q. Wu , F. Y. Wang , D. Li , Z. G. Dai , B. Zhang

We present a spectro-temporal analysis of 137 fast radio bursts (FRBs) from the first CHIME/FRB baseband catalog, including 125 one-off bursts and 12 repeat bursts, down to microsecond resolution using the least-squares optimization fitting…

There is now strong evidence that Long-duration Gamma-Ray Bursts (LGRBs) are preferentially formed in low-metallicity environments. However, the magnitude of this effect, and its functional dependence on metallicity have not been well…

High Energy Astrophysical Phenomena · Physics 2017-01-25 J. F. Graham , A. S. Fruchter

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

Fast radio burst (FRB) is a type of extragalactic radio signal characterized by millisecond duration, extremely high brightness temperature, and large dispersion measure. It remains a mystery in the universe. Advancements in instrumentation…

High Energy Astrophysical Phenomena · Physics 2024-09-23 Qin Wu , Fa-Yin Wang

According to the number of detected bursts, fast radio bursts (FRBs) can be classified into two categories, i.e., one-off FRBs and repeating ones. We make a statistical comparison of these two categories based on the first FRB catalog of…

High Energy Astrophysical Phenomena · Physics 2022-11-09 Hao-Yan Chen , Wei-Min Gu , Mouyuan Sun , Tuan Yi

We present GeMS/GSAOI observations of five fast radio burst (FRB) host galaxies with sub-arcsecond localizations. We examine and quantify their spatial distributions and locations with respect to their host galaxy light distributions,…

Fast radio bursts (FRBs) are luminous, millisecond-duration transients that offer great potential for probing the universe, yet their physical origins remain unclear. The dispersion measure (DM) and scattering time ($\tau$) distributions…

High Energy Astrophysical Phenomena · Physics 2025-06-24 Jian-Feng Mo , Weishan Zhu , Long-Long Feng

Fast radio bursts (FRBs) are extragalactic transients with typical durations of milliseconds. FRBs have been shown, however, to fluctuate on a wide range of timescales: some show sub-microsecond sub-bursts while others last up to a few…

High Energy Astrophysical Phenomena · Physics 2023-11-08 M. P. Snelders , K. Nimmo , J. W. T. Hessels , Z. Bensellam , L. P. Zwaan , P. Chawla , O. S. Ould-Boukattine , F. Kirsten , J. T. Faber , V. Gajjar

Fast radio bursts (FRBs) are radio bursts characterized by millisecond durations, high Galactic latitude positions, and high dispersion measures. Very recently, the cosmological origin of FRB 150418 has been confirmed by \cite{kea16}, and…

High Energy Astrophysical Phenomena · Physics 2016-05-04 Xue-Feng Wu , Song-Bo Zhang , He Gao , Jun-Jie Wei , Yuan-Chuan Zou , Wei-Hua Lei , Bing Zhang , Zi-Gao Dai , Peter Mészáros