MOA-2020-BLG-108Lb: A Giant Planet Beyond the Snow Line of a Low-Mass Lens Near the Lower Boundary of the Mass-Ratio Desert

arXiv:2607.12081 · astro-ph.EP, astro-ph.GA · Submitted 2026-07-13 · Read on arXiv

Yuki K. Satoh, David P. Bennett, Takahiro Sumi, Ian A. Bond, Nicholas J. Rattenbury, Daisuke Suzuki, Naoki Koshimoto, Shota Miyazaki, Rintaro Kirikawa, Fumio Abe, Aparna Bhattacharya, Ryusei Hamada, Stela Ishitani Silva, Yuki Hirao, Yutaka Matsubara, Yasushi Muraki, Tutumi Nagai, Kansuke Nunota, Greg Olmschenk, Clément Ranc, Sean K. Terry, Paul J. Tristram, Aikaterini Vandorou, Hibiki Yama

astro-ph.EP, astro-ph.GA

Submitted: 2026-07-13

Comments: Accepted for publication in PASJ. 10 pages, 5 figures. DOI: 10.1093/pasj/psag091

DOI: 10.1093/pasj/psag091

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Microlensing — 24× in this paper · explained in 2 episodes
• Core — 2× in this paper · explained in 2 episodes
• Degeneracy — 2× in this paper · explained in 3 episodes
• Accuracy — 1× in this paper · explained in 1 episode
• Adam — 1× in this paper · explained in 2 episodes
• Bayesian Information Criterion — 1× in this paper
• Gravitational Lensing — 1× in this paper · explained in 2 episodes
• Metallicity — 1× in this paper · explained in 3 episodes

Sources

• Completing the Census of Exoplanets with the Microlensing Planet Finder (MPF)
• Roman Galactic Plane Survey Definition Committee Report
• Wide-Field InfrarRed Survey Telescope-Astrophysics Focused Telescope Assets WFIRST-AFTA 2015 Report

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