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We report the properties of molecular gas in a sample of six host galaxies of fast radio bursts (FRBs) obtained from CO observations with the Atacama Large Millimeter/submillimeter Array (FRBs 20180924B, 20190102C, and 20190711A) and…

星系天体物理 · 物理学 2022-12-07 Bunyo Hatsukade , Tetsuya Hashimoto , Yuu Niino , Tzu-Yin Hsu

We present deep optical and near-infrared observations of the host galaxies of 34 fast radio bursts (FRBs) detected by the Commensal Real-time ASKAP Fast Transient (CRAFT) survey on the Australian SKA Pathfinder (ASKAP) to compare the…

The distribution of gas in the circumgalactic medium (CGM) of galaxies of all types is poorly constrained. Foreground CGMs contribute an extra amount to the dispersion measure (DM) of fast radio bursts (FRB). We measure this DM excess for…

星系天体物理 · 物理学 2023-03-15 Xiaohan Wu , Matthew McQuinn

The propagation of radio waves from distant compact radio sources through turbulent interstellar plasma in our Galaxy causes these sources to twinkle, a phenomenon called interstellar scintillation. Such scintillations are a unique probe of…

Fast radio bursts (FRBs) are mysterious millisecond-duration radio transients of unknown origin observed at extragalactic distances. It has been long speculated that magnetars are the engine powering repeating bursts from FRB sources, but…

Growing evidence indicates that some fast radio bursts (FRBs) reside in dense, magneto-ionic environments where extrinsic propagation effects can substantially reshape the observed signal. Within a 1D Gaussian plasma-lens framework, we show…

高能天体物理现象 · 物理学 2026-01-19 R. N. Li , Y. B. Wang , S. X. Yi , X. Zhou , F. Y. Wang

The localization of fast radio bursts (FRBs) has been hindered by the poor angular resolution of the detection observations and inconclusive identification of transient or variable counterparts. Recently a $\gamma$-ray pulse of $380$ s…

高能天体物理现象 · 物理学 2017-03-15 R. M. Shannon , V. Ravi

Fast radio bursts (FRBs) are millisecond-duration, extragalactic radio flashes of unknown physical origin. FRB 121102, the only known repeating FRB source, has been localized to a star-forming region in a dwarf galaxy at redshift z = 0.193,…

We examine the effect of Galactic diffractive interstellar scintillation as a means of explaining the reported deficit of Fast Radio Burst (FRB) detections at low Galactic latitude. We model the unknown underlying FRB flux density…

高能天体物理现象 · 物理学 2015-05-25 Jean-Pierre Macquart , Simon Johnston

We report the discovery of the repeating fast radio burst source FRB 20240209A using the CHIME/FRB telescope. We have detected 22 bursts from this repeater between February and July 2024, six of which were also recorded at the Outrigger…

We present the largest compilation to date of optical observations during and following fast radio bursts (FRBs). The data set includes our dedicated simultaneous and follow-up observations, as well as serendipitous archival survey…

There has been a rapid increase in the known fast radio burst (FRB) population, yet the progenitor(s) of these events have remained an enigma. A small number of FRBs have displayed some level of quasi-periodicity in their burst profile,…

We report on a systematic and sensitive search for pulsars and transient sources in the nearby spiral galaxy M33, conducted at 1.4 GHz with the Arecibo telescope's seven-beam receiver system, ALFA. Data were searched for both periodic and…

星系天体物理 · 物理学 2015-05-27 N. D. R. Bhat , J. M. Cordes , P. J. Cox , J. S. Deneva , T. H. Hankins , T. J. W. Lazio , M. A. McLaughlin

Over 80% of the cosmic baryon density is likely to be distributed in the diffuse, $\gtrsim10^{4}$ K circum- and inter-galactic medium (CGM and IGM respectively). We demonstrate that the dispersion measures (DMs) of samples of localized Fast…

高能天体物理现象 · 物理学 2019-02-20 Vikram Ravi

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…

高能天体物理现象 · 物理学 2025-03-11 Wenqi Ma , Zhifu Gao , Biaopeng Li , Chenhui Niu , Jumei Yao , Fayin Wang

A new population of sources emitting fast and bright transient radio bursts has recently been identified. The observed large dispersion measure values of FRBs suggests an extragalactic origin and an accurate determination of their positions…

天体物理仪器与方法 · 物理学 2015-07-01 Monika Obrocka , Benjamin Stappers , Peter Wilkinson

We report on the first millisecond timescale radio interferometric search for the new class of transient known as fast radio bursts (FRBs). We used the Very Large Array (VLA) for a 166-hour, millisecond imaging campaign to detect and…

We report on a search for persistent radio emission from the one-off Fast Radio Burst (FRB) 20190714A, as well as from two repeating FRBs, 20190711A and 20171019A, using the MeerKAT radio telescope. For FRB 20171019A we also conducted…

高能天体物理现象 · 物理学 2022-08-10 James O. Chibueze , M. Caleb , L. Spitler , H. Ashkar , F. Schussler , B. W. Stappers , C. Venter , I. Heywood , A. M. S. Richards , D. R. A. Williams , M. Kramer , R. Beswick , M. C. Bezuidenhout , R. P. Breton , L. N. Driessen , F. Jankowski , E. F. Keane , M. Malenta , M. Mickaliger , V. Morello , H. Qiu , K. Rajwade , S. Sanidas , M. Surnis , T. W. Scragg , C. R. H. Walker , N. Wrigley , H. E. S. S. Collaboration , : , F. Aharonian , F. Ait Benkhali , E. O. Anguner , M. Backes , V. Baghmanyan , V. Barbosa Martins , R. Batzofin , Y. Becherini , D. Berge , M. Bottcher , C. Boisson , J. Bolmont , M. de Bony de Lavergne , M. Breuhaus , R. Brose , F. Brun , T. Bulik , F. Cangemi , S. Caroff , S. Casanova , J. Catalano , M. Cerruti , T. Chand , A. Chen , O. U. Chibueze , G. Cotter , P. Cristofari , J. Damascene Mbarubucyeye , J. Devin , A. Djannati Atai , A. Dmytriiev , K. Egberts , J. P. Ernenwein , A. Fiasson , G. Fichet de Clairfontaine , G. Fontaine , S. Funk , S. Gabici , S. Ghafourizadeh , G. Giavitto , D. Glawion , M. H. Grondin , M. Horbe , C. Hoischen , T. L. Holch , Zhiqiu Huang , M. Jamrozy , F. Jankowsky , I. Jung Richardt , E. Kasai , K. Katarzynski , U. Katz , B. Khelifi , W. Kluzniak , Nu. Komin , K. Kosack , D. Kostunin , A. Lemiere , J. P. Lenain , F. Leuschner , T. Lohse , A. Luashvili , I. Lypova , J. Mackey , D. Malyshev , V. Marandon , P. Marchegiani , A. Marcowith , G. Marti Devesa , R. Marx , A. Mitchell , R. Moderski , L. Mohrmann , E. Moulin , J. Muller , K. Nakashima , M. de Naurois , A. Nayerhoda , J. Niemiec , A. Priyana Noel , P. O'Brien , S. Ohm , L. Olivera Nieto , E. de Ona Wilhelmi , M. Ostrowski , S. Panny , R. D. Parsons , S. Pita , V. Poireau , D. A. Prokhorov , H. Prokoph , G. Puhlhofer , A. Quirrenbach , P. Reichherzer , A. Reimer , O. Reimer , G. Rowell , B. Rudak , E. Ruiz Velasco , V. Sahakian , S. Sailer , H. Salzmann , D. A. Sanchez , A. Santangelo , M. Sasaki , H. M. Schutte , U. Schwanke , J. N. S. Shapopi , A. Specovius , S. Spencer , R. Steenkamp , S. Steinmassl , T. Takahashi , T. Tanaka , C. Thorpe Morgan , N. Tsuji , C. van Eldik , J. Veh , J. Vink , S. J. Wagner , A. Wierzcholska , Yu Wun Wong , A. Yusafzai , M. Zacharias , D. Zargaryan , A. A. Zdziarski , A. Zech , S. J. Zhu , S. Zouari , N. Zywucka

We use multiband archival HST observations to measure the photometric and structural parameters of the M81 globular cluster that hosts the Fast Radio Burst FRB 20200120E. Our best-fitting King model has an effective radius $r_h = 3.06$ pc…

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…