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Recently, a precise (sub-arcsecond) localization of the repeating fast radio burst (FRB) 121102 has led to the discovery of persistent radio and optical counterparts, the identification of a host dwarf galaxy at a redshift of $z=0.193$, and…

High Energy Astrophysical Phenomena · Physics 2017-09-20 D. Xiao , Z. G. Dai

We further explored the radius-to-frequency mapping in cases of FRBs. An analytical treatment of Lyutikov (2020) is presented. The frequency dependence of the drifting rate and the drifting timescale are obtained. The aberration effect and…

High Energy Astrophysical Phenomena · Physics 2021-12-08 H. Tong , J. Liu , H. G. Wang , Z. Yan

The origin and phenomenology of the Fast Radio Burst (FRB) remains unknown despite more than a decade of efforts. Though several models have been proposed to explain the observed data, none is able to explain alone the variety of events so…

High Energy Astrophysical Phenomena · Physics 2021-03-26 Luciano Nicastro , Cristiano Guidorzi , Eliana Palazzi , Luca Zampieri , Massimo Turatto , Angela Gardini

Synchrotron radiation of relativistic electrons is an important radiation mechanism in many astrophysical sources. In the sources where the synchrotron cooling time scale $t_c$ is shorter than the dynamical time scale $t_{dyn}$, electrons…

High Energy Astrophysical Phenomena · Physics 2015-06-15 Z. Lucas Uhm , Bing Zhang

We discuss possible electromagnetic signals accompanying Fast Radio Bursts (FRBs) that are expected in the scenario where FRBs originate in neutron star magnetospheres. For models involving Crab-like giant pulses, no appreciable…

High Energy Astrophysical Phenomena · Physics 2016-06-22 Maxim Lyutikov , Duncan R. Lorimer

It is proposed that sources of repeating fast radio bursts with detected periodicity are magnetars with extremely short initial spin periods at the protoneutron star stage, formed in binaries after tidal synchronization of their progenitor…

High Energy Astrophysical Phenomena · Physics 2020-06-24 S. B. Popov

Fast radio bursts (FRBs) are short, intense extragalactic radio bursts of unknown origin. Recent polarimetric studies have shown that a noticeable fraction of the repeating FRBs display irregular, short-time variations of the Faraday…

High Energy Astrophysical Phenomena · Physics 2023-07-05 Dongzi Li , Anna Bilous , Scott Ransom , Robert Main , Yuan-Pei Yang

Fast radio bursts (FRBs) are bright radio transients with short durations and extremely high brightness temperatures, and their physical origins are still unknown. Recently, a repeating source, FRB 20200120E, was found in a globular cluster…

High Energy Astrophysical Phenomena · Physics 2021-10-20 Yuan-Pei Yang

Fast Radio Bursts (FRBs) are intense, millisecond-duration broadband radio transients, the emission mechanisms of which are not understood. Masui et al. recently presented Green Bank Telescope observations of FRB 110523, which displayed…

High Energy Astrophysical Phenomena · Physics 2016-01-25 Vikram Ravi , Paul D. Lasky

The circumgalactic medium (CGM) is poorly constrained at the sub-parsec scales relevant to turbulent energy dissipation and regulation of multi-phase structure. Fast radio bursts (FRBs) are sensitive to small-scale plasma density…

Astrophysics of Galaxies · Physics 2025-07-25 S. K. Ocker , M. Chen , S. P. Oh , P. Sharma

Fast radio bursts (FRBs) are cosmic sources emitting millisecond-duration radio bursts. Although several hundreds FRBs have been discovered, their physical nature and central engine remain unclear. The variations of Faraday rotation measure…

High Energy Astrophysical Phenomena · Physics 2022-09-23 F. Y. Wang , G. Q. Zhang , Z. G. Dai , K. S. Cheng

Observational data imply the presence of superluminal electric currents in pulsar magnetospheres. Such sources are not inconsistent with special relativity; they have already been created in the laboratory. Here we describe the distinctive…

Solar and Stellar Astrophysics · Physics 2009-03-04 Houshang Ardavan , Arzhang Ardavan , Joseph Fasel , John Middleditch , Mario Perez , Andrea Schmidt , John Singleton

The precise origins of fast radio bursts (FRBs) remain unknown. Multiwavelength observations of nearby FRB sources can provide important insights into the enigmatic FRB phenomenon. Here, we present results from a sensitive, broadband X-ray…

We present a model for the gamma-ray emission of pulsars in terms of curvature radiation by highly relativistic particles. It is shown that the injection of power-law primary particles from an outer gap and subsequent cooling by curvature…

Astrophysics · Physics 2007-05-23 A. R. Crusius-Waetzel , H. Lesch

Since its initial discovery, the Fast radio burst (FRB) FRB 121102 has been found to be repeating with millisecond-duration pulses. Very recently, 15 new bursts were detected by the Green Bank Telescope (GBT) during its continous monitoring…

High Energy Astrophysical Phenomena · Physics 2018-01-31 Weiyang Wang , Rui Luo , Han Yue , Kejia Lee , Xuelei Chen , Renxin Xu

In this paper we develop a model for fast radio bursts (FRBs) based on triggered superradiance (SR) and apply it to previously published data of FRB 110220 and FRB 121102. We show how a young pulsar located at ~100 pc or more from an SR/FRB…

High Energy Astrophysical Phenomena · Physics 2018-11-28 Martin Houde , Fereshteh Rajabi , B. M. Gaensler , A. Mathews , Victor Tranchant

Presently, it is broadly assumed that fast radio bursts (FRBs) are sources of coherent emission powered by the magnetic energy release in magnetars. However, the exact emission mechanism is not known, yet. Two main frameworks exist:…

High Energy Astrophysical Phenomena · Physics 2022-10-27 Popov S. B.

The detection of a fast radio burst (FRB), FRB 200428, coincident with an X-ray burst (XRB) from the Galactic magnetar soft gamma repeater (SGR) SGR J1935+2154 suggests that magnetars can produce FRBs. Many XRBs have been detected from the…

High Energy Astrophysical Phenomena · Physics 2022-12-23 Connery J. Chen , Bing Zhang

Nonlinear effects are crucial for the propagation of Fast Radio Bursts (FRBs) near the source. We study the filamentation of FRBs in the relativistic winds of magnetars, which are commonly invoked as the most natural FRB progenitors. As a…

High Energy Astrophysical Phenomena · Physics 2023-02-08 Emanuele Sobacchi , Yuri Lyubarsky , Andrei M. Beloborodov , Lorenzo Sironi , Masanori Iwamoto