Intergalactic Medium Dispersion Measures of Fast Radio Bursts Estimated from IllustrisTNG Simulation and Their Cosmological Applications

Zhang, Z. J.; Yan, Kun; Li, C. M.; Zhang, G. Q.; Wang, F. Y.

doi:10.3847/1538-4357/abceb9

Cited by 46 publications

(64 citation statements)

References 51 publications

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“…Cross-correlations can constrain the high-z tail of the FRB redshift distribution, where direct associations are difficult since individual galaxies are usually faint (Eftekhari & Berger 2017). Very high-z FRBs, if present, can be used to constrain cosmic reionization history (Caleb et al 2019;Linder 2020;Zhang et al 2021). Finally, line-of-sight propagation effects will eventually be detectable in C ℓ fg and will be an interesting probe of the distribution of electrons in the universe.…”

Section: Discussionmentioning

confidence: 99%

CHIME/FRB Catalog 1 Results: Statistical Cross-correlations with Large-scale Structure

Rafiei-Ravandi

Smith

et al. 2021

ApJ

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The CHIME/FRB Project has recently released its first catalog of fast radio bursts (FRBs), containing 492 unique sources. We present results from angular cross-correlations of CHIME/FRB sources with galaxy catalogs. We find a statistically significant (p-value ∼ 10−4, accounting for look-elsewhere factors) cross-correlation between CHIME FRBs and galaxies in the redshift range 0.3 ≲ z ≲ 0.5, in three photometric galaxy surveys: WISE × SCOS, DESI-BGS, and DESI-LRG. The level of cross-correlation is consistent with an order-one fraction of the CHIME FRBs being in the same dark matter halos as survey galaxies in this redshift range. We find statistical evidence for a population of FRBs with large host dispersion measure (∼400 pc cm−3) and show that this can plausibly arise from gas in large halos (M ∼ 1014 M ⊙), for FRBs near the halo center (r ≲ 100 kpc). These results will improve in future CHIME/FRB catalogs, with more FRBs and better angular resolution.

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Section: Discussionmentioning

confidence: 99%

CHIME/FRB Catalog 1 Results: Statistical Cross-correlations with Large-scale Structure

Rafiei-Ravandi

Smith

et al. 2021

ApJ

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“…The effect of IGM inhomogeneities will lead to significant sightline-to-sightline scatter around the mean DM IGM (McQuinn 2014). The scatter of DM at z = 1 is about 400 pc cm −3 from theoretical analysis (McQuinn 2014) and the state-of-the-art cosmological simulations (Jaroszynski 2019;Zhang et al 2021). Considering a flat universe, the averaged value of DM IGM is (Ioka 2003;Inoue 2004;Deng & Zhang 2014)…”

Section: Fast Radio Burstsmentioning

confidence: 99%

“…The red dotted line is the averaged value of DM IGM from equation (2). The blue solid line is the DM IGM derived from the IllustrisTNG simulation with 95% confidence region (blue shaded area) (Zhang et al 2021 The electron number density along different sightlights is not uniform while clustering and fluctuating, so it is difficult to determine the real value of DM IGM . The probability distribution of DM IGM can be modelled by a quasi-Gaussian function with a long tail (McQuinn 2014).…”

Section: Fast Radio Burstsmentioning

confidence: 99%

“…In particular, DM IGM , contributed by the intergalactic medium (IGM), has a close connection with cosmological parameters. Therefore, precise measurements of DM IGM can be used as cosmological probes (Xiao et al 2021;Bhandari & Flynn 2021), such as "missing" baryons (McQuinn 2014Macquart et al 2020), cosmic proper distance (Yu & Wang 2017), dark energy (Zhou et al 2014;Gao et al 2014;Walters et al 2018), Hubble constant (Hagstotz et al 2021) and reionization history (Zheng et al 2014;Zhang et al 2021). Strongly lensed FRBs have been proposed to probe the nature of dark matter (Muñoz et al 2016;, and measure Hubble constant (Li et al 2018).…”

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confidence: 99%

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An 8\% Determination of the Hubble Constant from localized Fast Radio Bursts

Wu,

Zhang,

Wang

2021

Preprint

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The ΛCDM model successfully explains the majority of cosmological observations. However, the ΛCDM model is challenged by Hubble tension, a remarkable difference of Hubble constant H 0 between measurements from local probe and the prediction from Planck cosmic microwave background observations under ΛCDM model. So one urgently needs new distance indicators to test the Hubble tension. Fast radio bursts (FRBs) are millisecond-duration pulses occurring at cosmological distances, which are attractive cosmological probes. However, there is a thorny problem that the dispersion measures (DMs) contributed by host galaxy and the inhomogeneities of intergalactic medium cannot be exactly determined from observations. Previous works assuming fixed values for them bring uncontrolled systematic error in analysis. A reasonable approach is to handle them as probability distributions extracted from cosmological simulations. Here we report a measurement of H 0 = 64.67 +5.62 −4.66 km s −1 Mpc −1 using fourteen localized FRBs, with an uncertainty of 8.7% at 68.3 per cent confidence. Thanks to the high event rate of FRBs and localization capability of radio telescopes (i.e., Australian Square Kilometre Array Pathfinder and Very Large Array), future observations of a reasonably sized sample (∼100 localized FRBs) will provide a new way of measuring H 0 with a high precision (∼2.6%) to test the Hubble tension.

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“…Their distribution of DM around the median DM-z relation is close to Gaussian. The IllustrisTNG simulations, which build on Illustris and implement galaxy formation in a full magneto-hydrodynamical context, show that properties beyond the DM-z relation can be probed with FRBs, such as the magnetic field strength of the IGM, the cosmic reionisation history and the optical depth of the CMB [111] (see Section 4). Batten et al [112] used the EAGLE simulations to investigate the scatter around the mean and shape of the pdfs for redshifts z < 3 over a billion simulated FRB sightlines.…”

Section: The Macquart Relationmentioning

confidence: 99%

Probing the Universe with Fast Radio Bursts

Bhandari

Flynn

2021

Universe

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Fast Radio Bursts (FRBs) represent a novel tool for probing the properties of the universe at cosmological distances. The dispersion measures of FRBs, combined with the redshifts of their host galaxies, has very recently yielded a direct measurement of the baryon content of the universe, and has the potential to directly constrain the location of the “missing baryons”. The first results are consistent with the expectations of ΛCDM for the cosmic density of baryons, and have provided the first constraints on the properties of the very diffuse intergalactic medium (IGM) and circumgalactic medium (CGM) around galaxies. FRBs are the only known extragalactic sources that are compact enough to exhibit diffractive scintillation in addition to showing exponential tails which are typical of scattering in turbulent media. This will allow us to probe the turbulent properties of the circumburst medium, the host galaxy ISM/halo, and intervening halos along the path, as well as the IGM. Measurement of the Hubble constant and the dark energy parameter w can be made with FRBs, but require very large samples of localised FRBs (>103) to be effective on their own—they are best combined with other independent surveys to improve the constraints. Ionisation events, such as for He ii, leave a signature in the dispersion measure—redshift relation, and if FRBs exist prior to these times, they can be used to probe the reionisation era, although more than 103 localised FRBs are required.

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Intergalactic Medium Dispersion Measures of Fast Radio Bursts Estimated from IllustrisTNG Simulation and Their Cosmological Applications

Cited by 46 publications

References 51 publications

CHIME/FRB Catalog 1 Results: Statistical Cross-correlations with Large-scale Structure

CHIME/FRB Catalog 1 Results: Statistical Cross-correlations with Large-scale Structure

An 8\% Determination of the Hubble Constant from localized Fast Radio Bursts

Probing the Universe with Fast Radio Bursts

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