A pileup near 1~AU in the semimajor axis distribution of giant exoplanets has been visually identified using log-spaced distribution plots. Here we propose that looking for features in a log-spaced semimajor axis distribution of giant planets is problematic. We use the Bayesian Blocks algorithm to analyze the linear-spaced semimajor axis distribution, and find that the apparent pileup is not significant.
@article{arxiv.1802.06044,
title = {No Giant Planet Pileup Near 1 AU},
author = {Alexander W. Wise and Sarah E. Dodson-Robinson},
journal= {arXiv preprint arXiv:1802.06044},
year = {2018}
}