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相关论文: Inferences from the Distributions of Fast Radio Bu…

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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…

宇宙学与河外天体物理 · 物理学 2023-03-30 Thais Lemos , Rodrigo S. Gonçalves , Joel C. Carvalho , Jailson S. Alcaniz

Fast radio bursts (FRBs) have been identified as extragalactic sources which can make a probe of turbulence in the intergalactic medium (IGM) and their host galaxies. To account for the observed millisecond pulses caused by scatter…

高能天体物理现象 · 物理学 2016-12-14 Siyao Xu , Bing Zhang

Fast radio bursts (FRBs) are astrophysical transients of currently unknown origin, and so far several events have been detected at extragalactic distances. The dispersion measure (DM) of the radio signal is a probe of the integrated…

宇宙学与河外天体物理 · 物理学 2021-01-13 Robert Reischke , Steffen Hagstotz , Robert Lilow

The scattering of fast radio bursts (FRBs) by the intergalactic medium (IGM) is explored using cosmological hydrodynamical simulations. We confirm that the scattering by the clumpy IGM has significant line-of-sight variations. We…

宇宙学与河外天体物理 · 物理学 2018-10-17 Weishan Zhu , Long-Long Feng , Fupeng Zhang

The pulse morphology of fast radio bursts (FRBs) provides key information in both understanding progenitor physics and the plasma medium through which the burst propagates. We present a study of the profiles of 33 bright FRBs detected by…

Fast Radio Bursts (FRBs) probe baryons permeating the cosmic web through their dispersion measures (DMs), which encode the integrated electron density along cosmological sightlines. Using 3,455 unique FRB sources from CHIME/FRB with $\sim…

Fast radio bursts (FRBs) are increasingly being used for cosmological applications such as measuring the Hubble constant and baryon abundance. The increasing number of localized FRBs and precise measurement of dispersion measure (DM) make…

宇宙学与河外天体物理 · 物理学 2025-10-20 Sandeep Kumar Acharya , Paz Beniamini

Recent observations of FRB 20190520B have revealed rapid fluctuation of its Dispersion Measure within apparently fixed bounds, as well as a reversal of its Rotation Measure. The fluctuations of Dispersion Measure are uncorrelated with the…

高能天体物理现象 · 物理学 2022-05-25 J. I. Katz

We present constraints on the origins of fast radio bursts (FRBs) using large cosmological simulations. We calculate contributions to FRB dispersion measures (DMs) from the Milky Way, from the local Universe, from cosmological large-scale…

宇宙学与河外天体物理 · 物理学 2015-05-25 K. Dolag , B. M. Gaensler , A. M. Beck , M. C. Beck

We analyze the positional and morphological properties of about 3600 unique fast radio burst (FRB) sources reported in the second FRB catalog generated by the Canadian Hydrogen Intensity Mapping Experiment (CHIME) telescope. We find a…

The dispersion measure of fast radio bursts (FRBs), arising from the interactions of the pulses with free electrons along the propagation path, constitutes a unique probe of the cosmic baryon distribution. Their constraining power is…

Extragalactic Fast Radio Bursts (FRBs) have large dispersion measures (DMs) and are unique probes of intergalactic electron density fluctuations. By using the recently released First CHIME/FRB Catalog, we reexamined the structure function…

宇宙学与河外天体物理 · 物理学 2021-12-08 Siyao Xu , David H. Weinberg , Bing Zhang

We consider future cosmological tests based on observations of Fast Radio Bursts (FRBs). We use Illustris Simulation to realistically estimate the scatter in the dispersion measure (DM) of FRBs caused by the inhomogeneous distribution of…

宇宙学与河外天体物理 · 物理学 2019-02-12 M. Jaroszynski

The dispersion of extragalactic fast radio bursts (FRBs) can serve as a powerful probe of the diffuse plasma between and surrounding galaxies, which contains most of the Universe's baryons. By cross-correlating the dispersion of background…

Fast radio burst (FRB) discoveries are occurring rapidly, with thousands expected from upcoming surveys. The dispersion measures (DM) observed for FRB include important information on cosmological distances and the ionization state of the…

宇宙学与河外天体物理 · 物理学 2021-05-20 Mukul Bhattacharya , Pawan Kumar , Eric V. Linder

We consider the possible observation of Fast Radio Bursts (FRBs) with planned future radio telescopes, and investigate how well the dispersions and redshifts of these signals might constrain cosmological parameters. We construct mock…

宇宙学与河外天体物理 · 物理学 2018-04-11 Anthony Walters , Amanda Weltman , B. M. Gaensler , Yin-Zhe Ma , Amadeus Witzemann

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…

宇宙学与河外天体物理 · 物理学 2025-07-18 Ralf M. Konietzka , Liam Connor , Vadim A. Semenov , Angus Beane , Volker Springel , Lars Hernquist

The frequency-dependent time delays in fast radio bursts (FRBs) can be used to constrain the photon mass, if the FRB redshifts are known, but the similarity between the frequency dependences of dispersion due to plasma effects and a photon…

Fast Radio Bursts (FRBs), are millisecond radio signals that exhibit dispersion larger than what the Galactic electron density can account for. We have conducted a 1446 hour survey for Fast Radio Bursts (FRBs) at 145~MHz, covering a total…

The circumgalactic medium (CGM) is poorly constrained at the sub-parsec scales relevant to turbulent energy dissipation and regulation of multi-phase structure. Fast radio bursts (FRBs) are sensitive to small-scale plasma density…

星系天体物理 · 物理学 2025-07-25 S. K. Ocker , M. Chen , S. P. Oh , P. Sharma