112 citations · 262 across the 9 of their papers we have counts for
9 papers
Blending in Future Space-based Microlensing Surveys
Cheongho Han, Byeong-Gon Park, Ho-Il Kim +1
We investigate the effect of blending in future gravitational microlensing surveys by carrying out simulation of Galactic bulge microlensing events to be detected from a proposed s…
Properties of Central Caustics in Planetary Microlensing
Sun-Ju Chung, Cheongho Han, Byeong-Gon Park +9
To maximize the number of planet detections, current microlensing follow-up observations are focusing on high-magnification events which have a higher chance of being perturbed by…
Signs of Planetary Microlensing Signals
Cheongho Han, Kyongae Chang
An extrasolar planet can be detected via microlensing from the perturbation it makes in the smooth lensing light curve of the primary. In addition to the conventional photometric m…
Properties of Microlensing Light Curve Anomalies Induced by Multiple Planets
Cheongho Han, Heon-Young Chang, Jin H. An +1
In this paper, we show that the pattern of microlensing light curve anomalies induced by multiple planets are well described by the superposition of those of the single-planet syst…
Detectability of the Parallax-induced Deviations in the Astrometric Centroid Shift Trajectories of Gravitational Microlensing Events
Cheongho Han, Kyongae Chang
The uncertainty of the lens mass can be substantially reduced if it is determined from the lens proper motion obtained from astrometric measurements of the source image centroid sh…
Detection of Stellar Spots from the Observations of Caustic-Crossing Binary-Lens Gravitational Microlensing Events
Cheongho Han, Ho-Il Kim, Kyungae Chang +1
Recently, Heyrovský & Sasselov (1999) investigated the sensitivity of {\it single-lens} gravitational microlensing event light curves to small spots and found that during source tr…