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The persistent radio source (PRS) associated with FRB 20121102A, the first precisely localized repeating fast radio burst (FRB), provides key constraints on both its local environment and the nature of the underlying FRB engine. We present…

High Energy Astrophysical Phenomena · Physics 2025-07-01 Mohit Bhardwaj , Arvind Balasubramanian , Yasha Kaushal , Shriharsh P. Tendulkar

The origin of fast radio bursts (FRBs) is still a mystery. One model proposed to interpret the only known repeating object, FRB 121102, is that the radio emission is generated from asteroids colliding with a highly magnetized neutron star…

High Energy Astrophysical Phenomena · Physics 2019-02-27 Jeremy L. Smallwood , Rebecca G. Martin , Bing Zhang

Some repeating fast radio burst (FRB) sources show high burst rates, and the physical origin is still unknown. Outstandingly, the first repeater FRB 121102 appears extremely high burst rate with the maximum value reaching…

High Energy Astrophysical Phenomena · Physics 2022-09-21 Qiao-Chu Li , Yuan-Pei Yang , F. Y. Wang , Kun Xu , Zi-Gao Dai

The polarization of fast radio bursts (FRBs), bright astronomical transients, contains crucial information about their environments. We report polarization measurements of five repeating FRBs, the abundant signals of which enable wide-band…

Context: Fast radio bursts (FRBs) are bright millisecond radio events of unknown extragalactic origin. Magnetars are among the main contenders. Some sources, the repeaters, produce multiple events but so far generally without the…

High Energy Astrophysical Phenomena · Physics 2025-10-08 Guillaume Voisin , Théo Francez

Paper I in this series introduced a model in which seed radio bursts produced by a hotspot anchored in the magnetosphere of a highly-magnetic neutron star (NS) are greatly amplified by strong gravitational self-lensing and thus give rise to…

High Energy Astrophysical Phenomena · Physics 2026-03-16 Riccardo La Placa , Simone Dall'Osso , Luigi Stella , Andrea Possenti

Most of fast radio bursts (FRB) do not show evidence for repetition, and such non-repeating FRBs may be produced at the time of a merger of binary neutron stars (BNS), provided that the BNS merger rate is close to the high end of the…

High Energy Astrophysical Phenomena · Physics 2018-04-18 Shotaro Yamasaki , Tomonori Totani , Kenta Kiuchi

The discovery of a persistent radio source coincident with the first repeating fast radio burst, FRB 121102, and offset from the center of its dwarf host galaxy has been used as evidence for a link with young millisecond magnetars born in…

High Energy Astrophysical Phenomena · Physics 2020-06-10 T. Eftekhari , E. Berger , B. Margalit , B. D. Metzger , P. K. G. Williams

FRB 190520B is a repeating fast radio burst source whose large dispersion measure (DM) and temporal broadening suggest a dense and evolving local environment. In this work, we test the possibility that FRB 190520B originates from the…

High Energy Astrophysical Phenomena · Physics 2026-05-27 Jia-Peng Wei , Chen Deng , Gwenael Giacinti , Ze-Cheng Zou , Chen-Ran Hu , Yong-Feng Huang , Jin-Jun Geng

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

The persistent radio counterpart of FRB 121102 is estimated to have $N\sim 10^{52}$ particles, energy $E_N\sim 10^{48}$ erg, and size $R\sim 10^{17}$ cm. The source can be a nebula inflated and heated by an intermittent outflow from a…

High Energy Astrophysical Phenomena · Physics 2017-07-26 Andrei M. Beloborodov

It is generally assumed that the sources of Fast Radio Bursts radiate roughly isotropically, so that the observed low duty cycle of any individual source indicates a similar low duty cycle of its radio-frequency emission. An alternative…

High Energy Astrophysical Phenomena · Physics 2017-08-03 J. I. Katz

Recent polarization measurements of fast radio bursts (FRBs) provide new insights on these enigmatic sources. We show that the nearly 100% linear polarization and small variation of the polarization position angles (PAs) of multiple bursts…

High Energy Astrophysical Phenomena · Physics 2018-12-04 Wenbin Lu , Pawan Kumar , Ramesh Narayan

The extreme, time-variable Faraday rotation observed in the repeating fast radio burst (FRB) 121102 and its associated persistent synchrotron source demonstrates that some FRBs originate in dense, dynamic and possibly relativistic…

High Energy Astrophysical Phenomena · Physics 2019-03-27 H. K. Vedantham , V. Ravi

We present Monte-Carlo simulations of a cosmological population of repeating fast radio burst (FRB) sources whose comoving density follows the cosmic star formation rate history. We assume a power-law model for the intrinsic energy…

High Energy Astrophysical Phenomena · Physics 2019-02-20 M. Caleb , B. Stappers , K. Rajwade , C. Flynn

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…

The first repeating fast radio burst source, FRB 121102, is observed to emit bursts periodically. We show that FRB 121102 can be interpreted as an interacting neutron star binary system with an orbital period of 159 days. We develop a…

High Energy Astrophysical Phenomena · Physics 2022-09-16 Tomoki Wada , Kunihito Ioka , Bing Zhang

We analyze the slow periodicities identified in burst sequences from FRB 121102 and FRB 180916 with periods of about 16 and 160 d, respectively, while also addressing the absence of any fast periodicity that might be associated with the…

High Energy Astrophysical Phenomena · Physics 2022-04-21 J. M. Cordes , I. Wasserman , Shami Chatterjee , Gauri Batra

The analogy of the host galaxy of the repeating fast radio burst (FRB) source FRB 121102 and those of long gamma-ray bursts (GRBs) and super-luminous supernovae (SLSNe) has led to the suggestion that young magnetars born in GRBs and SLSNe…

While repeating fast radio bursts (FRBs) remain scarce in number, they provide a unique opportunity for follow-up observations that enhance our knowledge of their sources and potentially of the FRB population as a whole. Attaining more…

High Energy Astrophysical Phenomena · Physics 2019-03-06 L. J. M. Houben , L. G. Spitler , S. ter Veen , J. P. Rachen , H. Falcke , M. Kramer