A Neptune-mass Free-floating Planet Candidate Discovered by Microlensing Surveys
A Neptune-mass Free-floating Planet Candidate Discovered by Microlensing Surveys
Current microlensing surveys are sensitive to free-floating planets down to Earth-mass objects. All published microlensing events attributed to unbound planets were identified based on their short timescale (below two days), but lacked an angular Einstein radius measurement (and hence lacked a significant constraint on the lens mass). Here, we present …