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The dispersion measure (DM) of fast radio bursts (FRBs) in conjunction with their redshifts can be used as powerful probes of the distribution of extragalactic plasma. With a large enough sample, the free-electron--galaxy power spectrum…

Cosmology and Nongalactic Astrophysics · Physics 2026-02-17 April Qiu Cheng , Shion Elizabeth Andrew , Haochen Wang , Kiyoshi W. Masui

Fast Radio Bursts (FRBs) are a class of short-duration transients at radio wavelengths with inferred astrophysical origin. The prototypical FRB is a broadband signal that occurs over the extent of the receiver frequency range, is narrow in…

Instrumentation and Methods for Astrophysics · Physics 2018-09-12 Griffin Foster , Aris Karastergiou , Marisa Geyer , Mayuresh Surnis , Golnoosh Golpayegani , Kejia Lee , Duncan Lorimer , Danny C. Price , Kaustubh Rajwade

We present GeMS/GSAOI observations of five fast radio burst (FRB) host galaxies with sub-arcsecond localizations. We examine and quantify their spatial distributions and locations with respect to their host galaxy light distributions,…

Fast Radio Bursts (FRBs) are millisecond-duration radio pulses originating from cosmological distances, as indicated by their large dispersion measures. While numerous FRBs have now been localised to their host galaxies, a distinct class of…

High Energy Astrophysical Phenomena · Physics 2025-12-03 Thulo Letsele , Lebogang Mfulwane , Christo Venter , James O. Chibueze , Mechiel Christiaan Bezuidenhout

We present a measurement of the Hubble constant $H_0$ from surface brightness fluctuation (SBF) distances for 63 bright, mainly early-type galaxies out to 100 Mpc observed with the Wide Field Camera 3 Infrared Channel (WFC3/IR) on the…

Cosmology and Nongalactic Astrophysics · Physics 2021-04-27 John P. Blakeslee , Joseph B. Jensen , Chung-Pei Ma , Peter A. Milne , Jenny E. Greene

Gravitational lensing of fast radio bursts (FRBs) offers an exciting avenue for several cosmological applications. However, it is not yet clear how many such events future surveys will detect nor how to optimally find them. We use the known…

Cosmology and Nongalactic Astrophysics · Physics 2023-03-15 Liam Connor , Vikram Ravi

Fast Radio Bursts (FRBs) are transient sources that emit a single radio pulse with a duration of only a few milliseconds. Since the discovery of the first FRB in 2007, tens of similar events have been detected. However, their physical…

High Energy Astrophysical Phenomena · Physics 2019-01-25 B. Marcote , Z. Paragi

Fast Radio Burst (FRB) is an extremely energetic cosmic phenomenon of short duration. Discovered only recently and with its origin still unknown, FRBs have already started to play a significant role in studying the distribution and…

Instrumentation and Methods for Astrophysics · Physics 2025-07-31 Xuerong Guo , Han Wang , Yifan Xiao , Huaxi Chen , Yinan Ke , ChenChen Miao , Pei Wang , Di Li , Chenwu Jin , Ling He , Yi Feng , Yongkun Zhang , Jiaying Xu , Guangyong Chen

How the event rate of fast radio bursts (FRBs) evolves with redshift is a hot topic to explore their cosmological origin and the circum-burst environment. Particularly, it is urgent to know what the difference of event rates between…

High Energy Astrophysical Phenomena · Physics 2025-09-16 Q. Pan , X. Y. Du , Z. B. Zhang , Y. F. Huang , L. B. Li , G. A. Li

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

Fast radio bursts (FRBs) are millisecond-duration transient signals discovered over the past decade. Here we describe the scientific usefulness of FRBs, consider ongoing work at the Parkes telescope, and examine some relevant search…

High Energy Astrophysical Phenomena · Physics 2016-02-17 E. F. Keane , SUPERB Collaboration

Fast Radio Bursts (FRBs) are millisecond-duration radio transients with an observed dispersion measure ($DM$) greater than the expected Milky Way contribution, which suggests that such events are of extragalactic origin. Although some…

Cosmology and Nongalactic Astrophysics · Physics 2023-03-30 Thais Lemos , Rodrigo S. Gonçalves , Joel C. Carvalho , Jailson S. Alcaniz

Recent discoveries of highly dispersed millisecond radio bursts by Thornton et al. in a survey with the Parkes radio telescope at 1.4 GHz point towards an emerging population of sources at cosmological distances whose origin is currently…

High Energy Astrophysical Phenomena · Physics 2015-06-16 D. R. Lorimer , A. Karastergiou , M. A. McLaughlin , S. Johnston

Context: Fast Radio Bursts are transient radio pulses from presumably compact stellar sources of extragalactic origin. With new telescopes detecting multiple events per day, statistical methods are required in order to interpret…

Cosmology and Nongalactic Astrophysics · Physics 2021-01-20 Stefan Hackstein , Marcus Brüggen , Franco Vazza , Luiz F. S. Rodrigues

We estimate the upper limit redshifts of known FRBs using the dispersion measure (DM) - redshift ($z$) relation and derive the upper limit peak luminosity $L_p$ and energy $E$ of FRBs within the observational band. The average $z$ upper…

High Energy Astrophysical Phenomena · Physics 2018-11-14 Bing Zhang

We detail a new fast radio burst (FRB) survey with the Molonglo Radio Telescope, in which six FRBs were detected between June 2017 and December 2018. By using a real-time FRB detection system, we captured raw voltages for five of the six…

We report a new Fast Radio Burst (FRB) discovered in real-time as part of the UTMOST project at the Molonglo Observatory Synthesis Radio Telescope (MOST). FRB170827 is the first detected with our low-latency ($< 24$ s),…

Statistical interpretation of sparsely sampled event rates has become vital for new transient surveys, particularly those aimed at detecting fast radio bursts (FRBs). We provide an accessible reference for a number of simple, but critical,…

Instrumentation and Methods for Astrophysics · Physics 2016-12-06 Scott Vander Wiel , Sarah Burke-Spolaor , Earl Lawrence , Casey J. Law , Geoffrey C. Bower

We report the first radio interferometric search at 843 MHz for fast transients, particularly Fast Radio Bursts (FRBs). The recently recommissioned Swinburne University of Technology's digital backend for the Molonglo Observatory Synthesis…