Look! A Lensing!
Gaia can do astrometry very well. And it turns out it can also help us observe lensings.
Rogue One: The First Einstein Ring Measurements of A Free-Floating Planet
An OGLE microlensing event allowed researchers to find and measure the propeties of a rogue planet.
Planet Frequencies in the Galactic Bulge
Microlensing could hold the key to studying planet formation in incredibly crowded regions of the galaxy, and today’s paper shows us how.
How many planets are there between the stars?
The bending of light by gravity produces many phenomena, which can be exploited to make otherwise impossible observations. Chief among these is microlensing, where the light from a distant star or galaxy can be magnified by another object in between it and the observer. Initially used to image distant galaxy clusters, it can also reveal the presence of otherwise undetectable planets.es
Through the Lenses of Black Holes
Looking for something you cannot see, for example black holes, are tricky. The bending of light provides a solution.
Hypervariables in the nucleus of galaxies
A search expedition on the lookout for tidal disruption events led to something else altogether.