Unlike most other planet-detection techniques, gravitational microlensing does not rely on
detection of photons from either the host or the planet. Rather, planets are discovered by …

Context. Searching for planets around stars with different masses helps us to assess the
outcome of planetary formation for different initial conditions. The low-mass M dwarfs are …

Context. Gravitational microlensing is sensitive to compact-object lenses in the Milky Way,
including white dwarfs, neutron stars, or black holes, and could potentially probe a wide …

Most stellar remnants so far have been found in binary systems, where they interact with
matter from their companions. Isolated neutron stars and black holes are difficult to find as …

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 …

Because of the development of large-format, wide-field cameras, microlensing surveys are
now able to monitor millions of stars with sufficient cadence to detect planets. These new …

We present an extensive and pure sample of ultrawide binary stars with separations of
0.01≲ s/pc≲ 1 in the solar neighborhood. Using data from Gaia DR2, we define kinematic …

We present Keck NIRC2 high angular resolution adaptive optics observations of the
microlensing event OGLE-2005-BLG-169Lb, taken 8.21 years after the discovery of this …

We present the first example of binary microlensing for which the parameter measurements
can be verified (or contradicted) by future Doppler observations. This test is made possible …

We report the analysis of OGLE-2019-BLG-0960, which contains the smallest mass-ratio
microlensing planet found to date (q= 1.2–1.6× 10− 5 at 1σ). Although there is substantial …