CSST and Roman should detect Earth-mass to Moon-mass satellites around free-floating planets in microlensing surveys, with Roman more sensitive than CSST.
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Detecting Exomoons in Free-Floating-Planet Events from Space-based Microlensing Surveys
CSST and Roman should detect Earth-mass to Moon-mass satellites around free-floating planets in microlensing surveys, with Roman more sensitive than CSST.