The variance of dispersion measure of high-redshift transient objects as a probe of ionized bubble size during reionization
arXiv:1709.08012 · doi:10.1093/mnras/stx2462
Abstract
The dispersion measure (DM) of high-redshift transient objects such as Fast Radio Bursts can be a powerful tool to probe the intergalactic medium during the Epoch of Reionization. In this paper, we study the variance of the DMs of objects with the same redshift as a potential probe of the size distribution of ionized bubbles. We calculate the DM variance with a simple model with randomly-distributed spherical bubbles. It is found that the DM variance reflects the characteristics of the probability distribution of the bubble size. We find the variance can be measured precisely enough to obtain the information on the typical size with a few hundred sources at a single redshift.
7 pages, 7 figures, 1 table, accepted to MNRAS
References in corpus (15)
- A bright millisecond radio burst of extragalactic origin
- The Host Galaxy and Redshift of the Repeating Fast Radio Burst FRB 121102
- Massloss of galaxies due to a UV-background
- Fast Radio Burst Discovered in the Arecibo Pulsar ALFA Survey
- Model-independent evidence in favor of an end to reionization by z~6
- 21 cm fluctuations from inhomogeneous X-ray heating before reionization
- The detection of an extremely bright fast radio burst in a phased array feed survey
- A fast radio burst in the direction of the Carina dwarf spheroidal galaxy
- The Galactic Position Dependence of Fast Radio Bursts and the Discovery of FRB 011025
- Bubble size statistics during reionization from 21-cm tomography
- Extracting host galaxy dispersion measure and constraining cosmological parameters using fast radio burst data
- The morphology of cosmological reionization by means of Minkowski Functionals
- A Fast Radio Burst Occurs Every Second throughout the Observable Universe
- Studying 21cm power spectrum with one-point statistics
- Radio light curve of the galaxy possibly associated with FRB150418