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OGLE Collection of Star Clusters. New Objects in the Outskirts of the Large Magellanic Cloud
M. Sitek, M. K. Szymański, D. M. Skowron +13
The Magellanic System (MS), consisting of the Large Magellanic Cloud (LMC), the Small Magellanic Cloud (SMC) and the Magellanic Bridge (MBR), contains diverse sample of star cluste…
Discovery of a high state AM CVn binary in the Galactic Bulge Survey
T. Wevers, M. A. P. Torres, P. G. Jonker +14
We report on the discovery of a hydrogen-deficient compact binary (CXOGBS J175107.6-294037) belonging to the AM CVn class in the Galactic Bulge Survey. Deep archival X-ray observat…
OGLE16aaa - a Signature of a Hungry Super Massive Black Hole
Łukasz Wyrzykowski, M. Zieliński, Z. Kostrzewa-Rutkowska +22
We present the discovery and first three months of follow-up observations of a currently on-going unusual transient detected by the OGLE-IV survey, located in the centre of a galax…
Robust Filtering of Artifacts in Difference Imaging for Rapid Transients Detection
Jakub Klencki, Łukasz Wyrzykowski, Zuzanna Kostrzewa-Rutkowska +1
Real-time analysis and classification of observational data collected within synoptic sky surveys is a huge challenge due to constant growth of data volumes. Machine learning techn…
Microlensing by single black-holes in the Galaxy
Łukasz Wyrzykowski, Zuzanna Kostrzewa-Rutkowska, Krzysztof Rybicki
The longest microlensing events provide enough information to estimate the mass and distance of the lens. Among hundreds of millions of stars which were monitored for many years by…