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Fast radio bursts (FRBs) are radio signals that last milliseconds. They originate from cosmological distances and have relatively high dispersion measures (DMs), making them being excellent distance indicators. However, the origins of the…

High Energy Astrophysical Phenomena · Physics 2025-03-11 Wenqi Ma , Zhifu Gao , Biaopeng Li , Chenhui Niu , Jumei Yao , Fayin Wang

Astronomical radio bursts disperse while traveling through the interstellar medium. To optimally detect a short-duration signal within a frequency band, we have to precisely compensate for the pulse dispersion, which is a computationally…

Instrumentation and Methods for Astrophysics · Physics 2018-03-28 Barak Zackay , Eran O. Ofek

Radio Frequency Interference (RFI) increasingly contaminates the radio astronomy spectrum, often exceeding astronomical signal amplitudes by 50-70 dB. Reliable detection and mitigation are therefore essential for studies of faint transient…

Instrumentation and Methods for Astrophysics · Physics 2026-05-08 Natalia A. Schmid , Sasanka Katreddi , Yechan Kweon

We report five new fast radio bursts (FRBs) discovered from the Galactic Plane Pulsar Snapshot (GPPS) survey by the Five-hundred-meter Aperture Spherical radio Telescope (FAST): FRB\,20210126, FRB\,20210208, FRB\,20210705, FRB\,20211005 and…

High Energy Astrophysical Phenomena · Physics 2023-10-12 D. J. Zhou , J. L. Han , W. C. Jing , P. F. Wang , C. Wang , T. Wang , W. -Y. Wang , R. Luo , J. Xu , R. X. Xu , H. G. Wang

Fast radio bursts (FRBs) are millisecond-duration intense radio flares occurring at cosmological distances. Many models have been proposed to explain these topical astronomical events, but none has so far been confirmed. Here we show that a…

High Energy Astrophysical Phenomena · Physics 2017-11-27 Sudip Bhattacharyya

Extragalactic fast radio bursts (FRBs) are a new class of astrophysical transients with unknown origins that have become a main focus of radio observatories worldwide. FRBs are highly energetic ($\sim 10^{36}$-$10^{42}$ ergs) flashes that…

Instrumentation and Methods for Astrophysics · Physics 2023-04-18 Masoud Rafiei-Ravandi , Kendrick M. Smith

The paper presents the verification of previously published fast radio bursts (FRB) from the work of V.A. Fedorova and A.E. Rodin, detected in the monitoring data of the Large Phased Array (LPA) radio telescope using a search algorithm…

High Energy Astrophysical Phenomena · Physics 2023-05-05 E. A. Brylyakova , S. A. Tyul'bashev

We describe the design and deployment of GREENBURST, a commensal Fast Radio Burst (FRB) search system at the Green Bank Telescope. GREENBURST uses the dedicated L-band receiver tap to search over the 960$-$1920 MHz frequency range for…

Fast radio bursts (FRBs) are millisecond-duration radio transients of extragalactic origin, with diverse time-frequency patterns and emission properties that require explanation. With one possible exception, FRBs are detected only in the…

High Energy Astrophysical Phenomena · Physics 2025-02-19 Dirk Kuiper , Gabriella Contardo , Daniela Huppenkothen , Jason W. T. Hessels

Fast radio bursts (FRBs) are astronomical radio transients of unknown origin. A minority of FRBs have been observed to originate from repeating sources, and it is unknown which apparent one-off bursts are hidden repeaters. Recent studies…

High Energy Astrophysical Phenomena · Physics 2024-09-13 Arjun Sharma , Vinesh Maguire Rajpaul

We conducted targeted fast radio burst (FRB) and pulsar searches on eight pulsing ultraluminous X-ray sources (PULXs) using the Five-hundred-meter Aperture Spherical Radio Telescope (FAST) and the Parkes 64-meter Radio Telescope (Murriyang)…

High Energy Astrophysical Phenomena · Physics 2025-04-04 Juntao Bai , Na Wang , Rui Luo , Wei-Yang Wang , Shi Dai , Songbo Zhang , Shiqian Zhao , Shuangqiang Wang

The dispersion measures (DMs) of Fast Radio Bursts (FRBs) arise predominantly from free electrons in the large-scale structure of the Universe. The increasing number of FRB observations have started to empirically constrain the distribution…

Cosmology and Nongalactic Astrophysics · Physics 2025-07-18 Ralf M. Konietzka , Liam Connor , Vadim A. Semenov , Angus Beane , Volker Springel , Lars Hernquist

Fast Radio Bursts (FRBs) are bright radio transients with millisecond durations which typically occur at extragalactic distances. The association of FRB 20200428 with the Galactic magnetar SGR J1935+2154 strongly indicates that they could…

High Energy Astrophysical Phenomena · Physics 2024-12-13 Chen Du , Yong-Feng Huang , Zhi-Bin Zhang , Alexander Rodin , Viktoriya Fedorova , Abdusattar Kurban , Di Li

The detection of five new fast radio bursts (FRBs) found in the High Time Resolution Universe high latitude survey is presented. The rate implied is 6$^{+4}_{-3}\times~10^3$ (95%) FRBs sky$^{-1}$ day$^{-1}$ above a fluence of between 0.13…

The detection of six Fast Radio Bursts (FRBs) has recently been reported. FRBs are short duration ($\sim$ 1 ms), highly dispersed radio pulses from astronomical sources. The physical interpretation for the FRBs remains unclear but is…

High Energy Astrophysical Phenomena · Physics 2015-06-19 Divya Palaniswamy , Randall B. Wayth , Cathryn M. Trott , Jamie N. McCallum , Steven J. Tingay , Cormac Reynolds

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

Upcoming Fast Radio Burst (FRB) surveys will search $\sim$10\,$^3$ beams on sky with very high duty cycle, generating large numbers of single-pulse candidates. The abundance of false positives presents an intractable problem if candidates…

Instrumentation and Methods for Astrophysics · Physics 2018-11-28 Liam Connor , Joeri van Leeuwen

Fast radio bursts (FRBs) are commonly classified into repeating and apparently nonrepeating sources, yet whether this distinction reflects intrinsically different physical populations remains uncertain. Using the Second CHIME/FRB Catalog,…

High Energy Astrophysical Phenomena · Physics 2026-03-16 Wan-Peng Sun , Yin-Long Cao , Yong-Kun Zhang , Ji-Guo Zhang , Xiaohui Liu , Yichao Li , Fu-Wen Zhang , Wan-Ting Hou , Jing-Fei Zhang , Xin Zhang

Fast Radio Bursts (FRBs) are extragalactic millisecond-duration radio transients whose nature remains unknown. The advent of numerous facilities conducting dedicated FRB searches has dramatically revolutionised the field: hundreds of new…

High Energy Astrophysical Phenomena · Physics 2024-12-03 Inés Pastor-Marazuela