Large-scale clustering as a probe of the origin and the host environment of fast radio bursts

Abstract

We propose to use degree-scale angular clustering of fast radio bursts (FRBs) to identify their origin and the host galaxy population. We study the information content in autocorrelation of the angular positions and dispersion measures (DM) and in cross-correlation with galaxies. We show that the cross-correlation with Sloan Digital Sky Survey (SDSS) galaxies will place stringent constraints on the mean physical quantities associated with FRBs. If $\sim$10,000 FRBs are detected with $\lesssim \mathrm{deg}$ resolution in the SDSS field, the clustering analysis with the intrinsic DM scatter of $100\mathrm{pc}/{\mathrm{cm}}^3$ can constrain the global abundance of free electrons at $z<1$ and the large-scale bias of FRB host galaxies (the statistical relation between the distribution of host galaxies and cosmic matter density field) with fractional errors (with a $68\%$ confidence level) of $\sim 10\%$ and $\sim 20\%$, respectively. The mean near-source dispersion measure and the delay time distribution of FRB rates relative to the global star forming rate can be also determined by combining the clustering and the probability distribution function of DM. Our approach will be complementary to high-resolution ($\ll \mathrm{deg}$) event localization using e.g., VLA and VLBI for identifying the origin of FRBs and the source environment. We strongly encourage future observational programs such as CHIME, UTMOST, and HIRAX to survey FRBs in the SDSS field.

15 pages, 8 figures, 2 tables, accepted for publication in Phys. Rev. D

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• Fast Radio Burst Dispersion Measure Distribution as a Probe of Helium Reionization
• Characterizing fast radio bursts through statistical cross-correlations
• Probing primordial non-Gaussianity with Fast Radio Bursts
• Probing cosmology and gastrophysics with fast radio bursts: Cross-correlations of dark matter haloes and cosmic dispersion measures
• Consistent Constraints on the Equivalence Principle from localised Fast Radio Bursts
• Reconstruction of Baryon Fraction in Intergalactic Medium through Dispersion Measurements of Fast Radio Bursts
• Linear anisotropies in dispersion-measure-based cosmological observables
• Cosmological Covariance of Fast Radio Burst Dispersions
• Statistical measurements of dispersion measure fluctuations of FRBs
• Consistent equivalence principle tests with fast radio bursts
• Reconstruction of Reionization History through Dispersion Measure of Fast Radio Bursts
• Exploring selection biases in FRB dispersion-galaxy cross-correlations with magnetohydrodynamical simulations
• Redshift Distributions of Fast Radio Bursts Inferred Using Clustering in Dispersion Measure Space