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In this paper, we use Topological Data Analysis (TDA), a mathematical approach for studying data shape, to analyse Fast Radio Bursts (FRBs). Applying the Mapper algorithm, we visualise the topological structure of a large FRB sample. Our…

High Energy Astrophysical Phenomena · Physics 2023-11-08 Shruti Bhatporia , Anthony Walters , Jeff Murugan , Amanda Weltman

Fast Radio Bursts (FRBs) are a class of highly energetic, mostly extragalactic radio transients lasting for a few milliseconds. While over 600 FRBs have been published so far, their origins are presently unclear, with some theories for…

Understanding the origin of fast radio bursts (FRB's) is a central unsolved problem in astrophysics that is severely hampered by their poorly determined distance scale. Determining the redshift distribution of FRB's appears to require…

Cosmology and Nongalactic Astrophysics · Physics 2020-07-22 Masoud Rafiei-Ravandi , Kendrick M. Smith , Kiyoshi W. Masui

Regardless of whether or not all fast radio bursts (FRBs) repeat, those that do form a population with a distribution of rates. This work considers a power-law model of this population, with rate distribution $\Phi_r \sim R^{\gamma_r}$…

High Energy Astrophysical Phenomena · Physics 2023-09-19 C. W. James

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

A radio source that faded over six days, with a redshift of $z\approx0.5$ host, has been identified by Keane et al. (2016) as the transient afterglow to a fast radio burst (FRB 150418). We report follow-up radio and optical observations of…

High Energy Astrophysical Phenomena · Physics 2016-06-14 H. K. Vedantham , V. Ravi , K. Mooley , D. Frail , G. Hallinan , S. R. Kulkarni

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

Fast radio bursts (FRBs) are a promising new probe for astronomy and cosmology. Thanks to their extragalactic and cosmological origin, FRBs could be used to study the intergalactic medium (IGM) and the cosmic expansion. It is expected that…

Cosmology and Nongalactic Astrophysics · Physics 2020-04-21 Da-Chun Qiang , Hao Wei

Fast radio bursts (FRBs) are transient signals exhibiting diverse strengths and emission bandwidths. Traditional single-pulse search techniques are widely employed for FRB detection; yet weak, narrow-band bursts often remain undetectable…

High Energy Astrophysical Phenomena · Physics 2025-11-10 Mao Yuan , Jiarui Niu , Yi Feng , Xu-ning Lv , Chenchen Miao , Lingqi Meng , Bo Peng , Li Deng , Jingye Yan , Weiwei Zhu

Fast radio bursts (FRBs) are among the most energetic and enigmatic transients in the radio sky, with mounting evidence suggesting newborn, highly magnetized neutron stars formed in core-collapse supernovae (CCSNe) as their sources. A…

High Energy Astrophysical Phenomena · Physics 2025-06-03 Wanqing Liu , Mohit Bhardwaj , Ben Margalit

Radio frequency interference (RFI) detection and excision are key steps in the data-processing pipeline of the Five-hundred-meter Aperture Spherical radio Telescope (FAST). Because of its high sensitivity and large data rate, FAST requires…

Instrumentation and Methods for Astrophysics · Physics 2020-06-14 Zhicheng Yang , Ce Yu , Jian Xiao , Bo Zhang

With upcoming (continuum) surveys of high-resolution radio telescopes, detection rates of fast radio bursts (FRBs) might approach $10^5$ per sky per day by future extremely large observatories, such as the possible extension of the Square…

Cosmology and Nongalactic Astrophysics · Physics 2019-01-16 Jenny Wagner , Jori Liesenborgs , David Eichler

The recently discovered fast radio bursts (FRBs), presumably of extra-galactic origin, have the potential to become a powerful probe of the intergalactic medium (IGM). We point out a few such potential applications. We provide expressions…

High Energy Astrophysical Phenomena · Physics 2015-12-29 Z. Zheng , E. O. Ofek , S. R. Kulkarni , J. D. Neill , M. Juric

Fast Radio Bursts (FRBs) have emerged as powerful cosmological probes in recent years offering valuable insights into cosmic expansion. These predominantly extragalactic transients encode information on the expansion of the Universe through…

Cosmology and Nongalactic Astrophysics · Physics 2025-01-09 Jéferson A. S. Fortunato , David J. Bacon , Wiliam S. Hipólito-Ricaldi , David Wands

Fast radio bursts (FRBs) have been found in great numbers, but the physical mechanism of these sources is still a mystery. The redshift evolutions of the FRB energy distribution function and the volumetric rate shed light on the origin of…

High Energy Astrophysical Phenomena · Physics 2024-05-09 Ji-Guo Zhang , Yichao Li , Jia-Ming Zou , Ze-Wei Zhao , Jing-Fei Zhang , Xin Zhang

Large-scale structure (LSS) and tracer bias connect observable populations to the cosmic matter distribution. While galaxies are standard tracers, transient events such as gravitational-wave sources can also probe LSS despite large…

Cosmology and Nongalactic Astrophysics · Physics 2026-03-25 Yu-Tong Su , Zhengxiang Li

Fast Radios Bursts (FRBs) show large dispersion measures (DMs), suggesting an extragalactic location. We analyze the DMs of the 11 known FRBs in detail and identify steps as integer multiples of half the lowest DM found, 187.5cm$^{-3}$ pc,…

High Energy Astrophysical Phenomena · Physics 2015-03-31 Michael Hippke , Wilfried F. Domainko , John G. Learned

The radiation mechanism of fast radio bursts (FRBs) has been extensively studied but still remains elusive. Coherent radiation is identified as a crucial component in the FRB mechanism, with charged bunches also playing a significant role…

High Energy Astrophysical Phenomena · Physics 2023-08-22 Xiang-han Cui , Zheng-wu Wang , Cheng-min Zhang , Chen-hui Niu , Di Li , Jian-wei Zhang , De-hua Wang

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 classified into repeaters and non-repeaters, with only a few percent of the observed FRB population from the Canadian Hydrogen Intensity Mapping Experiment (CHIME) confirmed as repeaters. However, this figure…

High Energy Astrophysical Phenomena · Physics 2023-12-13 Shotaro Yamasaki , Tomotsugu Goto , Chih-Teng Ling , Tetsuya Hashimoto