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We present a demonstration version of a commensal pipeline for Fast Radio Burst (FRB) searches using a real-time incoherent beam from the Murchison Widefield Array (MWA). The main science target of the pipeline are bright nearby FRBs from…

High Energy Astrophysical Phenomena · Physics 2024-01-10 M. Sokolowski , I. S. Morrison , D. Price , G. Sleap , B. Crosse , A. Williams , L. Williams , C. James , B. W. Meyers , S. McSweeney , N. D. R. Bhat , G. Anderson

The slope of the source-count distribution of fast radio burst (FRB) fluences, $\alpha$, has been estimated using a variety of methods. Hampering all attempts have been the low number of detected FRBs, and the difficulty of defining a…

High Energy Astrophysical Phenomena · Physics 2018-11-28 C. W. James , R. D. Ekers , J. -P. Macquart , K. W. Bannister , R. M. Shannon

This paper presents the design, calibration, and survey strategy of the Fast Radio Burst (FRB) digital backend and its real-time data processing pipeline employed in the Tianlai Cylinder Pathfinder array. The array, consisting of three…

Recent observational efforts using imaging atmospheric Cherenkov telescopes (IACTs) have led to firm detections of very-high-energy (VHE) signals from bright gamma-ray bursts (GRBs), often at moderate redshifts. This work presents 15 years…

High Energy Astrophysical Phenomena · Physics 2026-03-24 A. Acharyya , F. Aharonian , C. Arcaro , H. Ashkar , M. Backes , V. Barbosa Martins , R. Batzofin , Y. Becherini , D. Berge , K. Bernlöhr , M. Böttcher , C. Boisson , J. Bolmont , J. Borowska , F. Brun , B. Bruno , C. Burger-Scheidlin , S. Casanova , J. Celic , M. Cerruti , S. Chandra , A. Chen , M. Chernyakova , J. O. Chibueze , O. Chibueze , T. Collins , B. Cornejo , G. Cotter , J. Damascene Mbarubucyeye , I. D. Davids , J. de Assis Scarpin , M. de Bony de Lavergne , M. de Naurois , E. de Oña Wilhelmi , A. G. Delgado Giler , J. Devin , A. Djannati-Ataï , J. Djuvsland , A. Dmytriiev , K. Egberts , K. Egg , J. -P. Ernenwein , C. Escañuela Nieves , M. D. Filipovic , G. Fontaine , S. Funk , S. Gabici , Y. A. Gallant , M. Genaro , J. F. Glicenstein , J. Glombitza , M. -H. Grondin , L. Heckmann , B. Heß , J. A. Hinton , W. Hofmann , T. L. Holch , M. Holler , D. Horns , Z. Huang , M. Jamrozy , F. Jankowsky , I. Jaroschewski , D. Jimeno Sanchez , I. Jung-Richardt , E. Kasai , K. Kasprzak , K. Katarzyński , D. Kerszberg , B. Khélifi , W. Kluzniak , N. Komin , K. Kosack , D. Kostunin , R. G. Lang , S. Lazarević , M. Lemoine-Goumard , J. -P. Lenain , P. Liniewicz , A. Luashvili , J. Mackey , D. Malyshev , D. Malyshev , V. Marandon , M. Mayer , A. Mehta , A. Mikhno , A. M. W. Mitchell , R. Moderski , M. O. Moghadam , L. Mohrmann , A. Montanari , E. Moulin , J. Niemiec , P. O'Brien , L. Olivera-Nieto , S. Panny , M. Panter , R. D. Parsons , U. Pensec , P. Pichard , S. Pita , G. Pühlhofer , M. Punch , A. Quirrenbach , M. Regeard , A. Reimer , O. Reimer , I. Reis , H. Ren , B. Reville , F. Rieger , G. Rowell , B. Rudak , E. Ruiz-Velasco , K. Sabri , V. Sahakian , H. Salzmann , D. A. Sanchez , A. Santangelo , M. Sasaki , F. Schüssler , M. Senniappan , J. N. S. Shapopi , W. Si Said , H. Sol , S. Spencer , Ł. Stawarz , S. Steinmassl , T. Tanaka , A. M. Taylor , G. L. Taylor , R. Terrier , M. Tsirou , T. Unbehaun , C. van Eldik , M. Vecchi , C. Venter , J. Vink , T. Wach , S. J. Wagner , A. Wierzcholska , M. Zacharias , A. A. Zdziarski , W. Zhong , S. J. Zhu , A. Zech

We have searched for prompt radio emission from nine Gamma Ray Bursts (GRBs) with a 12 m telescope at 1.4 GHz, with a time resolution of 64 us to 1 s. We detected single dispersed radio pulses with significances >6 sigma in the few minutes…

High Energy Astrophysical Phenomena · Physics 2015-06-05 Keith W. Bannister , Tara Murphy , Bryan M. Gaensler , John E. Reynolds

Fast Radio Bursts (FRBs) are a promising tool for studying the low-density universe as their dispersion measures (DM) are extremely sensitive probes of electron column density. Active Galactic Nuclei (AGN) inject energy into the…

Astrophysics of Galaxies · Physics 2022-03-14 Adam J. Batten , Alan R. Duffy , Chris Flynn , Vivek Gupta , Emma Ryan-Weber , Nastasha Wijers

We have used the 2- year Differential Microwave Radiometer data from the COsmic Background Explorer (COBE) satellite to systematically search for millimetric (31 - 90 GHz) emission from the Gamma Ray Bursts (GRBs) in the Burst And Transient…

Astrophysics · Physics 2009-10-30 S. Ali , R. K. Schaefer , M. Limon , L. Piccirillo

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

Discoveries of rotating radio transients and fast radio bursts (FRBs) in pulsar surveys suggest that more of such transient sources await discovery in archival data sets. Here we report on a single-pulse search for dispersed radio bursts…

High Energy Astrophysical Phenomena · Physics 2015-12-02 A. Rane , D. R. Lorimer , S. D. Bates , N. McMann , M. A. McLaughlin , K. Rajwade

We report the properties of more than 600 bursts (including cluster-bursts) detected from the repeating fast radio burst (FRB) source FRB 20201124A with the Five-hundred-meter Aperture Spherical radio Telescope (FAST) during an extremely…

High Energy Astrophysical Phenomena · Physics 2023-01-04 D. J. Zhou , J. L. Han , B. Zhang , K. J. Lee , W. W. Zhu , D. Li , W. C. Jing , W. -Y. Wang , Y. K. Zhang , J. C. Jiang , J. R. Niu , R. Luo , H. Xu , C. F. Zhang , B. J. Wang , J. W. Xu , P. Wang , Z. L. Yang , Y. Feng

We investigate whether current data on the distribution of observed flux densities of Fast Radio Bursts (FRBs) are consistent with a constant source density in Euclidean space. We use the number of FRBs detected in two surveys with…

High Energy Astrophysical Phenomena · Physics 2016-07-27 Niels Oppermann , Liam Connor , Ue-Li Pen

Fast Radio Bursts (FRBs) are energetic, short, bright transients that occur frequently over the entire radio sky. The observational challenges following from their fleeting, generally one-off nature have prevented identification of the…

High Energy Astrophysical Phenomena · Physics 2021-07-14 D. W. Gardenier , J. van Leeuwen

Fast radio bursts (FRB) are millisecond-duration radio pulses with apparent extragalactic origins. All but two of the FRBs have been discovered using the Parkes dish which employs multiple beams formed by an array of feed horns on its focal…

High Energy Astrophysical Phenomena · Physics 2016-10-19 H. K. Vedantham , V. Ravi , G. Hallinan , R. Shannon

We report on the discovery and localization of fast radio bursts (FRBs) from the MeerTRAP project, a commensal fast radio transient-detection programme at MeerKAT in South Africa. Our hybrid approach combines a coherent search with an…

Recently, both theoretical arguments and observational evidence suggested that a small fraction of fast radio bursts (FRBs) could be associated with gamma-ray bursts (GRBs). If such FRB/GRB association systems are commonly detected in the…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-18 He Gao , Zhuo Li , Bing Zhang

Magnetars are a promising candidate for the origin of Fast Radio Bursts (FRBs). The detection of an extremely luminous radio burst from the Galactic magnetar SGR J1935+2154 on 2020 April 28 added credence to this hypothesis. We report on…

We report on multiwavelength observations of FRB 20240114A, a nearby (z=0.13), hyperactive, repeating fast radio burst that was discovered in January 2024. We performed simultaneous observations of the source with the Effelsberg 100-m radio…

High Energy Astrophysical Phenomena · Physics 2025-03-05 F. Eppel , M. Krumpe , P. Limaye , N. Intrarat , J. Wongphechauxsorn , M. Cruces , W. Herrmann , F. Jankowski , P. Jaroenjittichai , L. G. Spitler , M. Kadler

The phenomenon of fast radio bursts (FRBs) was discovered in 2007. These are powerful (0.1-100 Jy) single radio pulses with durations of several milliseconds, large dispersion measures, and record high brightness temperatures suggesting…

High Energy Astrophysical Phenomena · Physics 2018-12-14 S. B. Popov , K. A. Postnov , M. S. Pshirkov

We have discovered 21 Rotating Radio Transients (RRATs) in data from the Green Bank Telescope (GBT) 350-MHz Drift-scan and the Green Bank North Celestial Cap pulsar surveys using a new candidate sifting algorithm. RRATs are pulsars with…

Fast radio bursts (FRBs) are intense bursts of radio emission with durations of milliseconds. Although researchers have found them happening frequently all over the sky, they are still in the dark to understand what causes the phenomena…