Results 51 to 60 of about 3,374 (103)

Mass Production of 2023 KMTNet Microlensing Planets. II. Two Planets and A Brown Dwarf

open access: yesThe Astronomical Journal
To expand the homogeneous microlensing planetary sample of the Korea Microlensing Telescope Network (KMTNet), we investigate six planetary candidates identified by the AnomalyFinder search in the 2023 prime-field data, namely KMT-2023-BLG-1592, OGLE-2023-
Zhixing Li   +69 more
doaj   +1 more source

Unveiling MOA-2007-BLG-192: An M Dwarf Hosting a Likely Super-Earth

open access: yesThe Astronomical Journal
We present an analysis of high-angular-resolution images of the microlensing target MOA-2007-BLG-192 using Keck adaptive optics and the Hubble Space Telescope.
Sean K. Terry   +17 more
doaj   +1 more source

OGLE-2009-BLG-023/MOA-2009-BLG-028: Characterization of a Binary Microlensing Event Based on Survey Data

open access: yes, 2011
We report the result of the analysis of the light curve of a caustic-crossing binary-lens microlensing event OGLE-2009-BLG-023/MOA-2009-BLG-028. Even though the event was observed solely by survey experiments, we could uniquely determine the mass of the ...
A. Fukui   +84 more
core   +1 more source

KMT-2025-BLG-1616Lb: First Microlensing Bound Planet From DREAMS

open access: yesThe Astronomical Journal
We present observations and analysis of the bound planetary microlensing event KMT-2025-BLG-1616. The planetary signal was captured by the Korea Microlensing Telescope Network and the Dark Energy Camera Rogue Earths and Mars Survey (DREAMS).
Hongjing Yang   +65 more
doaj   +1 more source

Gravitational Microlensing Near Caustics I: Folds

open access: yes, 2002
We study the local behavior of gravitational lensing near fold catastrophes. Using a generic form for the lensing map near a fold, we determine the observable properties of the lensed images, focusing on the case when the individual images are unresolved,
A. O. Petters   +7 more
core   +3 more sources

Detection of Extrasolar Planets by Gravitational Microlensing

open access: yes, 2008
Gravitational microlensing provides a unique window on the properties and prevalence of extrasolar planetary systems because of its ability to find low-mass planets at separations of a few AU.
A. Alcock   +93 more
core   +1 more source

Candidate Microlensing Brown Dwarfs in Binary Lens Systems from the 2023–2025 Observing Seasons

open access: yesThe Astronomical Journal
We present detailed light-curve analyses of 10 binary-lens microlensing events observed during the 2023–2025 seasons and selected as candidates for hosting brown dwarf companions.
Cheongho Han   +68 more
doaj   +1 more source

OGLE-2016-BLG-0168 Binary Microlensing Event: Prediction and Confirmation of the Micorlens Parallax Effect from Space-based Observation

open access: yes, 2017
The microlens parallax is a crucial observable for conclusively identifying the nature of lens systems in microlensing events containing or composed of faint (even dark) astronomical objects such as planets, neutron stars, brown dwarfs, and black holes ...
Albrow, M. D.   +34 more
core   +1 more source

A Differentiable Binary Microlensing Model Using Adaptive Contour Integration Method

open access: yesThe Astronomical Journal
We present microlux , which is a Jax -based code that can compute the binary microlensing light curve and its derivatives both efficiently and accurately.
Haibin Ren, Wei Zhu
doaj   +1 more source

Planetary Detection Efficiency of the Magnification 3000 Microlensing Event OGLE-2004-BLG-343

open access: yes, 2006
OGLE-2004-BLG-343 was a microlensing event with peak magnification A_{max}=3000+/-1100, by far the highest-magnification event ever analyzed and hence potentially extremely sensitive to planets orbiting the lens star.
A. Gould   +19 more
core   +1 more source

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