Exoplanet statistics and theoretical implications

W Zhu, S Dong - Annual Review of Astronomy and Astrophysics, 2021 - annualreviews.org
In the past few years, significant advances have been made in understanding the
distributions of exoplanet populations and the architecture of planetary systems. We review …

Free-floating Planet Mass Function from MOA-II 9 yr Survey toward the Galactic Bulge

T Sumi, N Koshimoto, DP Bennett… - The Astronomical …, 2023 - iopscience.iop.org
We present the first measurement of the mass function of free-floating planets (FFPs), or very
wide orbit planets down to an Earth mass, from the MOA-II microlensing survey in 2006 …

Predictions of the nancy grace roman space telescope galactic exoplanet survey. II. Free-floating planet detection rates

SA Johnson, M Penny, BS Gaudi, E Kerins… - The Astronomical …, 2020 - iopscience.iop.org
Abstract The Nancy Grace Roman Space Telescope (Roman) will perform a Galactic
Exoplanet Survey (RGES) to discover bound exoplanets with semimajor axes greater than 1 …

Exoplanets as sub-GeV dark matter detectors

RK Leane, J Smirnov - Physical Review Letters, 2021 - APS
We present exoplanets as new targets to discover dark matter (DM). Throughout the Milky
Way, DM can scatter, become captured, deposit annihilation energy, and increase the heat …

Terrestrial-and Neptune-mass Free-Floating Planet Candidates from the MOA-II 9 yr Galactic Bulge Survey

N Koshimoto, T Sumi, DP Bennett, V Bozza… - The Astronomical …, 2023 - iopscience.iop.org
We report the discoveries of low-mass free-floating planet (FFP) candidates from the
analysis of 2006–2014 MOA-II Galactic bulge survey data. In this data set, we found 6111 …

Euclid-Roman joint microlensing survey: Early mass measurement, free floating planets, and exomoons

E Bachelet, D Specht, M Penny, M Hundertmark… - Astronomy & …, 2022 - aanda.org
As the Kepler mission has done for hot exoplanets, the ESA Euclid and NASA Roman
missions have the potential to create a breakthrough in our understanding of the …

Limits on planetary-mass primordial black holes from the OGLE high-cadence survey of the Magellanic Clouds

P Mróz, A Udalski, MK Szymański… - The Astrophysical …, 2024 - iopscience.iop.org
Observations of the Galactic bulge revealed an excess of short-timescale gravitational
microlensing events that are generally attributed to a large population of free-floating or wide …

A terrestrial-mass rogue planet candidate detected in the shortest-timescale microlensing event

P Mróz, R Poleski, A Gould, A Udalski… - The Astrophysical …, 2020 - iopscience.iop.org
Some low-mass planets are expected to be ejected from their parent planetary systems
during early stages of planetary system formation. According to planet formation theories …

KMT-2017-BLG-2820 and the Nature of the Free-floating Planet Population

YH Ryu, P Mróz, A Gould, KH Hwang… - The Astronomical …, 2021 - iopscience.iop.org
We report a new free-floating planet (FFP) candidate, KMT-2017-BLG-2820, with Einstein
radius θ E≃ 6 μas, lens-source relative proper motion μ rel≃ 8 mas yr− 1, and Einstein …

The Great Planetary Heist: theft and capture in star-forming regions

EC Daffern-Powell, RJ Parker… - Monthly Notices of the …, 2022 - academic.oup.com
Gravitational interactions in star-forming regions are capable of disrupting and destroying
planetary systems, as well as creating new ones. In particular, a planet can be stolen, where …