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Fast radio bursts (FRBs) are bright, short-duration radio transients with very high brightness temperatures implying highly coherent emission. We suggest that the FRBs are caused by the self-focusing of an electron beam interacting with an…

High Energy Astrophysical Phenomena · Physics 2020-03-18 Mustafa Doğan , Kazım Yavuz Ekşi

Fast radio bursts (FRBs) are mysterious millisecond pulses in radio, most of which originate from distant galaxies. Revealing the origin of FRBs is becoming central in astronomy. The redshift evolution of the FRB energy function, i.e., the…

Context: Fast Radio Bursts are transient radio pulses from presumably compact stellar sources of extragalactic origin. With new telescopes detecting multiple events per day, statistical methods are required in order to interpret…

Cosmology and Nongalactic Astrophysics · Physics 2021-01-20 Stefan Hackstein , Marcus Brüggen , Franco Vazza , Luiz F. S. Rodrigues

We summarize our understanding of millisecond radio bursts from an extragalactic population of sources. FRBs occur at an extraordinary rate, thousands per day over the entire sky with radiation energy densities at the source about ten…

High Energy Astrophysical Phenomena · Physics 2019-09-11 James M. Cordes , Shami Chatterjee

When moduli roll in the early universe, all physical scales - including string tensions - simultaneously evolve. The dynamics of cosmic string loops with time-varying tension can produce cosmic string loop trackers in which most of the…

High Energy Physics - Phenomenology · Physics 2025-11-21 Joseph P. Conlon , Edmund J. Copeland , Edward Hardy , Noelia Sánchez González

Fast radio bursts (FRBs) are mysterious millisecond-duration radio transients of extragalactic origin. Some of them repeat, while others apparently do not. Investigations of periodic activity in repeating FRB have been conducted to probe…

Fast Radio Bursts (FRBs) are millisecond-duration transient events that are typically observed at radio wavelengths and cosmological distances but their origin remains unclear. Furthermore, most FRB origin models are related to the…

High Energy Astrophysical Phenomena · Physics 2025-07-24 Yu-Hao Zhu , Chen-Hui Niu , Xiang-Han Cui , Di Li , Yi-Feng , Chao-Wei Tsai , Pei Wang , Yong-Kun Zhang , Fanyi Meng , Zheng Zheng

Mysterious Fast Radio Bursts (FRB), still eluding a rational explanation, are astronomical radio flashes with durations of milliseconds. They are thought to be of an extragalactic origin, with luminosities orders of magnitude larger than…

High Energy Astrophysical Phenomena · Physics 2019-10-09 George Machabeli , Andria Rogava , Beka Tevdorashvili

A network of observable, macroscopic cosmic (super-)strings may have formed in the early universe. If so, the cusps that generically develop on cosmic-string loops emit bursts of gravitational radiation that could be detectable by both…

General Relativity and Quantum Cosmology · Physics 2014-11-20 Michael I. Cohen , Curt Cutler , Michele Vallisneri

In 2007 we were part of a team that discovered the so-called ``Lorimer Burst'', the first example of a new class of objects now known as fast radio bursts (FRBs). These enigmatic events are only a few ms in duration and occur at random…

High Energy Astrophysical Phenomena · Physics 2024-06-12 Duncan R. Lorimer , Maura A. McLaughlin , Matthew Bailes

We propose a novel idea for the coherent intense millisecond radio emission of cosmic fast radio bursts (FRBs), which have recently been identified with flares from a magnetar. Motivated by the conventional paradigm of Type III solar radio…

High Energy Astrophysical Phenomena · Physics 2023-11-16 Edison Liang

There are several phenomenological similarities between Soft Gamma Repeaters and Fast Radio Bursts, including duty factors, time scales and probable repetition. The sudden release of magnetic energy in a neutron star magnetosphere, as in…

High Energy Astrophysical Phenomena · Physics 2016-09-23 J. I. Katz

Fast radio bursts (FRBs) are bright, energetic, radio pulses of extragalactic origin. A dichotomy has emerged in the population: some produce repeat bursts, while the majority do not. Most repeating sources only show rare repetitions, and…

We investigate the cosmological evolution of the luminosity and redshift of FRBs. As is the case for all extragalactic sources, we are dealing with data that are truncated by observational selection effects, the most important being the…

Cosmology and Nongalactic Astrophysics · Physics 2025-08-05 Sujay Champati , Vahé Petrosian

Fast radio bursts (FRBs) are intense, short-duration radio transients of mysterious origin. They have been detected across a wide range of frequencies from 110 MHz to 8 GHz. Their spectral properties, remaining poorly understood, are…

High Energy Astrophysical Phenomena · Physics 2026-05-13 Rui-Nan Li , Hao-Tian Lan , Zhen-Yin Zhao , Qin Wu , Fa-Yin Wang , Zi-Gao Dai

Fast radio bursts (FRBs) are transient intense radio pulses with duration of milliseconds. Although the first FRB was detected more than a decade ago, the progenitors of these energetic events are not yet known. The currently preferred…

High Energy Astrophysical Phenomena · Physics 2020-01-08 Esha Kundu , Lilia Ferrario

The field of Fast Radio Burst (FRB) science is currently thriving and growing rapidly. The lines of active investigation include theoretical and observational aspects of these enigmatic millisecond radio signals. These pursuits are for the…

High Energy Astrophysical Phenomena · Physics 2018-11-05 E. F. Keane

Fast radio bursts (FRBs) are among the most energetic and enigmatic transients in the radio sky, with mounting evidence suggesting newborn, highly magnetized neutron stars formed in core-collapse supernovae (CCSNe) as their sources. A…

High Energy Astrophysical Phenomena · Physics 2025-06-03 Wanqing Liu , Mohit Bhardwaj , Ben Margalit

Fast radio bursts (FRBs) are millisecond-duration signals that are highly dispersed at distant galaxies. However, the physical origin of FRBs is still unknown. Coherent curvature emission by bunches, e.g., powered by starquakes, has already…

High Energy Astrophysical Phenomena · Physics 2022-04-21 Wei-Yang Wang , Jin-Chen Jiang , Jiguang Lu , Heng Xu , Jiangwei Xu , Kejia Lee , Jifeng Liu , Renxin Xu

Fast radio bursts (FRBs) are micro-to-millisecond duration radio transients that originate mostly from extragalactic distances. The emission mechanism responsible for these high luminosity, short duration transients remains debated. The…