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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…

Cosmology and Nongalactic Astrophysics · Physics 2021-05-20 Mukul Bhattacharya , Pawan Kumar , Eric V. Linder

Context. The increased detection rate of Fast Radio Bursts (FRBs) makes it likely to get samples of sizes $\mathcal{O}(10^2)$ to $\mathcal{O}(10^3)$ in the near future. Because of their extragalactic origin can help us in understanding the…

High Energy Astrophysical Phenomena · Physics 2021-05-28 Albert Wai Kit Lau , Ayan Mitra , Mehdi Shafiee , George Smoot

The observed dispersion measures (DMs) of fast radio bursts (FRBs) are a good indicator of the amount of ionized material along the propagation paths. In this work, we present a forecast of He II reionization detection using the DM and…

Cosmology and Nongalactic Astrophysics · Physics 2024-10-04 Jun-Jie Wei , Chong-Yu Gao

The discovery of fast radio bursts (FRBs) about a decade ago opened up new possibilities for probing the ionization history of the Intergalactic Medium (IGM). In this paper we study the use of FRBs for tracing the epoch of HeII…

High Energy Astrophysical Phenomena · Physics 2019-03-06 M. Caleb , C. Flynn , B. Stappers

Dispersion measures (DM) of fast radio bursts (FRBs) probe the density of electrons in the intergalactic medium (IGM) along their lines-of-sight, including the average density versus distance to the source and its variations in direction.…

The period in which hydrogen in the intergalactic medium (IGM) is ionized, known as the Epoch of Reionization (EoR) is still poorly understood. The timing and duration of the EoR is expected to be governed by the underlying astrophysics.…

Cosmology and Nongalactic Astrophysics · Physics 2021-06-09 Michael Pagano , Hannah Fronenberg

Fast Radio Bursts (FRBs) are extra-galactic radio transients which exhibit a distance-dependent dispersion of their signal, and thus can be used as cosmological probes. In this article we, for the first time, apply a model-independent…

Cosmology and Nongalactic Astrophysics · Physics 2022-07-21 Stefan Heimersheim , Nina S. Sartorio , Anastasia Fialkov , Duncan R. Lorimer

We describe three different methods for exploring the hydrogen reionization epoch using fast radio bursts (FRBs) and provide arguments for the existence of FRBs at high redshift (z). The simplest way, observationally, is to determine the…

Cosmology and Nongalactic Astrophysics · Physics 2021-02-10 Paz Beniamini , Pawan Kumar , Xiangcheng Ma , Eliot Quataert

Through the relationship between dispersion measures (DM) and redshifts, fast radio bursts (FRBs) are considered to be very promising cosmological probes. In this paper, we attempted to use the DM-z relationship of FRBs to study the helium…

Cosmology and Nongalactic Astrophysics · Physics 2022-06-10 Liang Jing , Jun-Qing Xia

Fast Radio Bursts (FRBs) are recently discovered extra-galactic radio transients which are now used as novel cosmological probes. We show how the Bursts' Dispersion Measure can model-independently probe the history of Hydrogen reionization.…

Cosmology and Nongalactic Astrophysics · Physics 2022-07-21 Stefan Heimersheim

We examine how the various observable statistical properties of the FRB population relate back to their fundamental physical properties in a model independent manner. We analyse the flux density and fluence distributions of Fast Radio…

High Energy Astrophysical Phenomena · Physics 2018-08-08 Jean-Pierre Macquart , Ron Ekers

Revealing the cosmic reionisation history is at the frontier of extragalactic astronomy. The power spectrum of the cosmic microwave background (CMB) polarisation can be used to constrain the reionisation history. Here we propose a…

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

If a small fraction of Fast Radio Bursts (FRBs) are associated with Gamma-Ray Bursts (GRBs), as recently suggested by Zhang, the combination of redshift measurements of GRBs and dispersion measure (DM) measurements of FRBs opens a new…

High Energy Astrophysical Phenomena · Physics 2014-03-05 Wei Deng , Bing Zhang

Fast radio bursts (FRBs), millisecond-duration radio transient events, possess the potential to serve as excellent cosmological probes. The FRB redshift distribution contains information about the FRB sources, providing key constraints on…

Cosmology and Nongalactic Astrophysics · Physics 2025-03-25 Hui Peng , Yu Yu

The dispersion measure (DM)--redshift relation of fast radio bursts (FRBs) has been proposed as a potential new tool for probing intergalactic medium (IGM) and for studying cosmology. However, the poor knowledge of the baryon fraction in…

Cosmology and Nongalactic Astrophysics · Physics 2023-02-23 Bao Wang , Jun-Jie Wei

Fast Radio Bursts (FRBs) are millisecond transient radio events with a high energy. By identifying the origin of the \textbf{burst}, it is possible to measure the redshift of the host galaxy, which can be used to constrain cosmological and…

Cosmology and Nongalactic Astrophysics · Physics 2024-02-27 Thais Lemos , Rodrigo S. Gonçalves , Joel C. Carvalho , Jailson S. Alcaniz

We propose different estimators to probe the intergalactic medium (IGM) during epoch of reionization (EoR) using the dispersion measure (${\rm DM}$) of the fast radio bursts. We consider three different reionization histories, which we can…

Cosmology and Nongalactic Astrophysics · Physics 2025-10-17 Abinash Kumar Shaw , Raghunath Ghara , Paz Beniamini , Saleem Zaroubi , Pawan Kumar

In this paper, we study the evolution of the ionization fraction $x_e(z)$ during the epoch of reionization by using the dispersion measurements (DMs) of fast radio bursts (FRBs). Different from the previous studies, here we turn to consider…

Cosmology and Nongalactic Astrophysics · Physics 2021-04-20 Ji-Ping Dai , Jun-Qing Xia

Identifying the host galaxies of fast radio bursts (FRBs), and comparing their redshifts and dispersion measures, has unlocked a new probe of the cosmological distribution of ionised gas. However the necessary optical observations to…

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