What It Takes to Measure Reionization with Fast Radio Bursts

Heimersheim, Stefan; Sartorio, Nina S; Fialkov, Anastasia; Lorimer, D. R.

doi:10.3847/1538-4357/ac70c9

Cited by 14 publications

(5 citation statements)

References 80 publications

(100 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This approach is feasible at the moment, but will lead to errorneous conclusions in the future. Lastly, there are studies investigating the possibility to constrain reionization with FRBs (Heimersheim et al 2022). These studies, due to their high redshift FRBs would be much stringer affected by the covariance matrix due to the longer integration path.…”

Section: Discussionmentioning

confidence: 99%

Covariance Matrix of Fast Radio Bursts Dispersion

Reischke¹,

Hagstotz²

2023

Preprint

View full text Add to dashboard Cite

The dispersion of fast radio bursts (FRBs) is a measure of the large-scale electron distribution. It enables measurements of cosmological parameters, especially of the expansion rate and the cosmic baryon fraction. The number of events is expected to increase dramatically over the coming years, and of particular interest are bursts with identified host galaxy and therefore redshift information. In this paper, we explore the covariance matrix of the dispersion measure (DM) of FRBs induced by the large-scale structure, as bursts from a similar direction on the sky are correlated by long wavelength modes of the electron distribution. We derive analytical expressions for the covariance matrix and examine the impact on parameter estimation from the FRB dispersion measure -redshift relation. The covariance also contains additional information that is missed by analysing the events individually. For future samples containing over ∼ 300 FRBs with host identification over the full sky, the covariance needs to be taken into account for unbiased inference, and the effect increases dramatically for smaller patches of the sky.

show abstract

Section: Discussionmentioning

confidence: 99%

Covariance Matrix of Fast Radio Bursts Dispersion

Reischke¹,

Hagstotz²

2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Furthermore, gamma-ray bursts (GRBs;McQuinn et al 2008) and fast radio burst (Heimersheim et al 2022) have been used to constrain the EoR. Theoretically, the EoR can be constrained using the deuterium line (Stancil et al 1998), the carbon ion C II (Padmanabhan et al 2022), the 3 He + transition (Furlanetto et al 2006a), hydrogen deuteride (HD; Breysse et al 2022), and neutral oxygen (Doughty & Finlator 2019).…”

Section: )mentioning

confidence: 99%

A New Constraint on the Simulation of the Intergalactic Medium through the Evolution of the Neutral Hydrogen Fraction in the Epoch of Reionization

Hosseini,

Salmasi,

Tabasi

et al. 2023

ApJ

View full text Add to dashboard Cite

The thermal history of the intergalactic medium is full of extremely useful data in the field of astrophysics and cosmology. In other words, by examining this environment in different redshifts, the effects of cosmology and astrophysics can be observed side by side. Therefore, simulation is a very powerful tool to reach a suitable model for the intergalactic medium, both in terms of cosmology and astrophysics. In this work, we have simulated the intergalactic medium with the help of the 21cmFAST code and compared the evolution of the neutral hydrogen fraction in different initial conditions. Considerable works have arbitrarily determined many important effective parameters in the thermal history of the intergalactic medium without any constraints, and usually, there is much flexibility in the modeling. Nonetheless, in this work, by focusing on the evolution of the neutral hydrogen fraction in different models and comparing it with observational data, we have eliminated many simulated models and introduced only limited simulation models that could confirm the observations with sufficient accuracy. This issue becomes thoroughly vital from the point of view that in addition to restricting the models through the neutral hydrogen fraction, it can also impose restrictions on the parameters affecting its changes. However, we hope that in future works, by enhancing the observational data and increasing their accuracy, more compatible models with the history of the intergalactic medium can be achieved.

show abstract

“…N = 100 of localized FRBs with 5 < z < 15 redshifts could constrain CMB optical depth at ∼10% level. This might let us find the midpoint of reionization with 4% precision; detection of N = 1000 FRBs would give an opportunity to describe the whole history of reionization [104]. It also would be very important for CMB analysis, reducing uncertainties on the CMB optical depth due to reionization and leading to more precise determination of various cosmological parameters, such as the amplitude of the power spectrum of primordial fluctuations.…”

Section: Intergalactic Medium and Baryonic Mattermentioning

confidence: 99%

Future of Neutron Star Studies with Fast Radio Bursts

Попов

Пширков

2023

Particles

View full text Add to dashboard Cite

Fast radio bursts (FRBs) were discovered only in 2007. However, the number of known events and sources of repeating bursts grows very rapidly. In the near future, the number of events will be ≳104 and the number of repeaters ≳100. Presently, there is a consensus that most of the sources of FRBs might be neutron stars (NSs) with large magnetic fields. These objects might have different origin as suggested by studies of their host galaxies which represent a very diverse sample: from regions of very active star formation to old globular clusters. Thus, in the following decade we expect to have a very large sample of events directly related to extragalactic magnetars of different origin. This might open new possibilities to probe various aspects of NS physics. In the review we briefly discuss the main directions of such future studies and summarize our present knowledge about FRBs and their sources.

show abstract

What It Takes to Measure Reionization with Fast Radio Bursts

Cited by 14 publications

References 80 publications

Covariance Matrix of Fast Radio Bursts Dispersion

Covariance Matrix of Fast Radio Bursts Dispersion

A New Constraint on the Simulation of the Intergalactic Medium through the Evolution of the Neutral Hydrogen Fraction in the Epoch of Reionization

Future of Neutron Star Studies with Fast Radio Bursts

Contact Info

Product

Resources

About