We present both the technical overview and main science drivers of the fourth phase of the
Optical Gravitational Lensing Experiment (hereafter OGLE-IV). OGLE-IV is currently one of …

Studies, have shown that the remnants of destroyed planets and debris-disk planetesimals
can survive the volatile evolution of their host stars into white dwarfs,, but few intact planetary …

We review the expanding, internet-enabled, and rapidly evolving field of citizen astronomy,
focusing on research projects in stellar, extragalactic, and planetary science that have …

We report the results of the statistical analysis of planetary signals discovered in MOA-II
microlensing survey alert system events from 2007 to 2012. We determine the survey …

In order to exhume the buried signatures of" missing planetary caustics" in Korea
Microlensing Telescope Network (KMTNet) data, we conducted a systematic anomaly …

We apply the automated AnomalyFinder algorithm of Paper I to 2018–2019 light curves from
the≃ 13 deg 2 covered by the six KMTNet prime fields, with cadences Γ≥ 2 hr− 1. We find a …

We present the analysis of seven microlensing planetary events with planet/host mass ratios
q< 10− 4: KMT-2017-BLG-1194, KMT-2017-BLG-0428, KMT-2019-BLG-1806, KMT-2017 …

We present a statistical analysis of the first four seasons from a 'second-generation'
microlensing survey for extrasolar planets, consisting of near-continuous time coverage of 8 …

We present the analyses of two microlensing events, OGLE-2018-BLG-0567 and OGLE-
2018-BLG-0962. In both events, the short-lasting anomalies were densely and continuously …

We report the discovery of KMT-2020-BLG-0414Lb, with a planet-to-host mass ratio q 2= 0.9–
1.2× 10− 5= 3–4⊕ at 1σ, which is the lowest mass-ratio microlensing planet to date …