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Measuring Hubble constant using localized and unlocalized fast radio bursts
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abstract
The Hubble constant ($H_0$) is one of the most important parameters in the standard $\rm \Lambda CDM$ model. The measurements given by the main two methods show a gap larger than $4\sigma$, which is known as Hubble tension. Fast radio bursts (FRBs) are extragalactic pulses with durations of milliseconds. They can be used as cosmological probes. We constrain $H_0$ using localized and nonlocalized FRBs. We first used 108 localized FRBs to constrain $H_0$ using the probability distributions of \DMhost and \DMIGM from the IllustrisTNG simulation. Then, we used a Monte Carlo sampling to calculate the pseudo-redshift distributions of 527 nonlocalized FRBs from CHIME observations. The 108 localized FRBs yield a constraint of $H_0=69.40_{-1.97}^{+2.14}$ ${\rm km\ s^{-1} Mpc^{-1}}$, which lies between the early- and late-time values. The constraint of $H_{0}$ from nonlocalized FRBs yields $H_0=68.81_{-0.68}^{+0.68}$ ${\rm km\ s^{-1} Mpc^{-1}}$. This result indicates that the uncertainty on the constraint of $H_0$ drops to $\sim1\%$ when the number of localized FRBs is increased to $\sim500$. These uncertainties only include the statistical error. The systematic errors are also discussed and play a dominant role in the current sample.
Forward citations
Cited by 6 Pith papers
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The One-Loop Power Spectrum of Fast Radio Burst Dispersion Measures
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A Unified Volumetric Rate-Energy Relation from Magnetar Radio Bursts to Fast Radio Bursts
The volumetric rate of radio bursts from magnetar SGR 1935+2154, repeating FRB 20180916B, and non-repeating CHIME FRBs follows a single power law R ∝ E^-1.31 from 10^29 to 10^42 erg.
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Calibrating $\rm{DM_{IGM}}-z$ relation using host galaxies of FRBs
A claimed tight sSFR-DM_exc correlation is used to calibrate the DM_IGM-z relation, but the improvement is evaluated on the same data used to fit the model.
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Constraining the Baryon Fraction in Extragalactic Diffuse Ionized Gas with 124 Localized Fast Radio Bursts
Analyzing 92 localized FRBs with a Jacobian-corrected IGM dispersion PDF plus CMB, BAO, and supernova data gives f_IGM = 0.864 ± 0.041 (YMW16, ΛCDM); the abstract's '124 bursts, f_d > 90%' headline is not supported by...
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Probing Primordial Black Holes with upcoming Radio Telescopes: a case study for LOFAR2.0, FAST Core Array and BINGO
LOFAR2.0, FAST Core Array and BINGO can constrain the PBH dark matter fraction f_PBH below 0.16-0.39 for masses above 10^{-2} to 10 solar masses via FRB lensing statistics.
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Investigating Interacting Dark Energy Models Using Fast Radio Burst Observations
FRB dispersion measures do not yet discriminate between interacting dark energy models, but simulated 10,000-burst samples would measure key parameters to percent-level precision.
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