USING ORBITAL EFFECTS TO BREAK THE CLOSE/WIDE DEGENERACY IN BINARY-LENS MICROLENSING EVENTS [PDF]
Astrophysical Journal, 2013 6 pages, 4 figures, 2 ...
Nicholas Rattenbury +2 more
exaly +6 more sources
Kepler Rotation Effects on the Binary-Lens Microlensing Events [PDF]
Progress of Theoretical Physics, 1999 24 pages, 8 figures, accepted in Progress of Theoretical Physics Vol ...
Kunihito Ioka, R Nishi
exaly +3 more sources
Detection of stellar spots from the observations of caustic-crossing binary-lens gravitational microlensing events [PDF]
Monthly Notices of the Royal Astronomical Society, 2000 11 pages, 2 ...
Cheongho Han, Ho-Il Kim
exaly +3 more sources
TWO STARS TWO WAYS: CONFIRMING A MICROLENSING BINARY LENS SOLUTION WITH A SPECTROSCOPIC MEASUREMENT OF THE ORBIT [PDF]
Astrophysical Journal, 2016 ABSTRACT Light curves of microlensing events involving stellar binaries and planetary systems can provide information about the orbital elements of the system due to orbital modulations of the caustic structure. Accurately measuring the orbit in either the stellar or planetary case requires detailed modeling of subtle deviations in the ...
Andrew Vanderburg +2 more
exaly +4 more sources
Distribution of caustic-crossing intervals for Galactic binary-lens microlensing events [PDF]
Monthly Notices of the Royal Astronomical Society, 2000 Detection of caustic crossings of binary-lens gravitational microlensing events is important because by detecting them one can obtain useful information both about the lens and source star. In this paper, we compute the distribution of the intervals between two successive caustic crossings, $f(t_{\rm cc})$, for Galactic bulge binary-lens events to ...
Cheongho Han
exaly +3 more sources
Effect of a Wide Binary Companion to the Lens on the Astrometric Behavior of Gravitational Microlensing Events [PDF]
Astrophysical Journal, 2002 In this paper, we investigate the effect of a wide binary companion of the lens on the astrometric behavior of Galactic gravitational microlensing events and compare it to the effect on the photometric behavior. We find that the wide binary companion of the lens can affect the centroid motion of images substantially even if the corresponding light ...
An, Jin H., Han, Cheongho
exaly +3 more sources
OGLE-2014-BLG-1112LB: A Microlensing Brown Dwarf Detected through the Channel of a Gravitational Binary-lens Event [PDF]
Astrophysical Journal, 2017 Abstract Due to the nature of the gravitational field, microlensing, in principle, provides an important tool for detecting faint and even dark brown dwarfs. However, the number of identified brown dwarfs is limited due to the difficulty of the lens mass measurement that is needed to check the substellar nature of the lensing object.
Przemek Mroz +2 more
exaly +7 more sources
DETERMINING THE PHYSICAL LENS PARAMETERS OF THE BINARY GRAVITATIONAL MICROLENSING EVENT MOA-2009-BLG-016 [PDF]
Astrophysical Journal, 2010 We report the result of the analysis of the light curve of the microlensing event MOA-2009-BLG-016. The light curve is characterized by a short-duration anomaly near the peak and an overall asymmetry. We find that the peak anomaly is due to a binary companion to the primary lens and the asymmetry of the light curve is explained by the parallax effect ...
Nicholas Rattenbury +2 more
exaly +3 more sources
Three Binary-source Binary-lens Microlensing Events from the 2024 Microlensing Campaign
Publications of the Astronomical Society of the PacificAbstract We investigated microlensing events detected by the Optical Gravitational Lensing Experiment (OGLE) and Korea Microlensing Telescope Network surveys during the 2024 observing season, focusing on those that exhibit very complex anomaly features.
Cheongho Han +29 more
exaly +3 more sources