210 citations · 528 across the 21 of their papers we have counts for
21 papers
A Degeneracy in DRW Modelling of AGN Light Curves
Szymon Kozlowski
Individual light curves of active galactic nuclei (AGNs) are nowadays successfully modelled with the damped random walk (DRW) stochastic process, characterized by the power exponen…
OGLE-2012-BLG-0724Lb: A Saturn-mass Planet around an M-dwarf
Y. Hirao, A. Udalski, T. Sumi +35
We report the discovery of a planet by the microlensing method, OGLE-2012-BLG-0724Lb. Although the duration of the planetary signal for this event was one of the shortest seen for…
Analysis of photometric uncertainties in the OGLE-IV Galactic Bulge microlensing survey data
J. Skowron, A. Udalski, S. Kozłowski +8
We present a statistical assessment of both, observed and reported, photometric uncertainties in the OGLE-IV Galactic bulge microlensing survey data. This dataset is widely used fo…
OGLE-2014-BLG-0257L: A Microlensing Brown Dwarf Orbiting a Low-mass M Dwarf
C. Han, Y. K. Jung, A. Udalski +10
In this paper, we report the discovery of a binary composed of a brown dwarf and a low-mass M dwarf from the observation of the microlensing event OGLE-2014-BLG-0257. Resolution of…
Spitzer Observations of OGLE-2015-BLG-1212 Reveal a New Path to Breaking Strong Microlens Degeneracies
V. Bozza, Y. Shvartzvald, A. Udalski +98
Spitzer microlensing parallax observations of OGLE-2015-BLG-1212 decisively breaks a degeneracy between planetary and binary solutions that is somewhat ambiguous when only ground-b…
Ultra-Short-Period Binary Systems in the OGLE Fields Toward the Galactic Bulge
I. Soszynski, K. Stepien, B. Pilecki +11
We present a sample of 242 ultra-short-period (P < 0.22 d) eclipsing and ellipsoidal binary stars identified in the OGLE fields toward the Galactic bulge. Based on the light curve…