6 citations · 8 across the 2 of their papers we have counts for
4 papers · 1 filter
Microlensing Optical Depth Revisited with Recent Star Counts
Yoon-Hyun Ryu, Heon-Young Chang, Myeong-Gu Park +1
More reliable constraints on the microlensing optical depth comes from a better understanding of the Galactic model. Based on well-constrained Galactic bulge and disk models constr…
Determination of Stellar Ellipticities in Future Microlensing Surveys
Cheongho Han, Heon-Young Chang
We propose a method that can determine the ellipticities of source stars of microlensing events produced by binary lenses. The method is based on the fact that the products of the…
Radio Variability of the Sagittarius due to an Orbiting Star
Heon-Young Chang, Chul-Sung Choi
Recently, unprecedentedly accurate data on the orbital motion of stars in the vicinity of the Sagittarius have been available. Such information can be used not only to…
A New Distance Estimator and Spatial Distribution of GRBS Observed by BATSE
Heon-Young Chang, Suk-Jin Yoon, Chul-Sung Choi
We propose a redshift estimator for the long () gamma-ray bursts (GRBs) observed by the BATSE. It is based on an empirical relation between the redshift and the power-…