KMT-2025-BLG-2093: Free-Floating Planet Candidate Near the Shore of the Einstein Desert
Yoon-Hyun Ryu, Andrew Gould, Kyu-Ha Hwang, Qiyue Qian, Michael D. Albrow, Sun-Ju Chung, Cheongho Han, Youn Kil Jung, Zhixing Li, Shude Mao, In-Gu Shin, Yossi Shvartzvald, Hongjing Yang, Jennifer C. Yee, Weicheng Zang, Dong-Jin Kim, Chung-Uk Lee, Byeong-Gon Park, Richard W. Pogge
astro-ph.EP, astro-ph.SR
Submitted: 2026-06-26
Comments: 16 pages, 4 figures, submitted to AAS
License: http://creativecommons.org/licenses/by/4.0/
The gist: We analyze KMT-2025-BLG-2093, with angular Einstein radius theta E=13.1 plus or minus 2.8, mu as, which makes it the second isolated microlens that lies in the ``Einstein Desert'' (9, mu as < theta
Terminology
Abstract
We analyze KMT-2025-BLG-2093, with angular Einstein radius theta E=13.1 plus or minus 2.8, mu as, which makes it the second isolated microlens that lies in the ``Einstein Desert'' (9, mu as < theta E<25, mu as) between free-floating planets (FFPs) on one side and brown dwarfs and stars on the other. We discuss how its characteristics may give clues to future exploration of FFPs, especially in the era of satellite missions that have a major FFP focus, including Earth 2.0 and Roman.
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