4 papers
The Galactic Center as a connected ecosystem across spatial and temporal scales
Michal ZajaÄek, Bożena Czerny, Martin Mondek +5
The Galactic Center is not only the region where the nearest supermassive black hole (SMBH) is located. It is also the region with the largest stellar density as well as the larges…
Constraining the Galactic Center Dark Cluster with ELT/MICADO Observations
Sebastiano D. von Fellenberg, Matúš Labaj, Sean M. Ressler
The Galactic Center hosts the densest known stellar environment in the Milky Way, dominated by the massive black hole Sgr A* and the surrounding nuclear star cluster. Theory predic…
Compact stellar systems hosting an intermediate mass black hole: magnetohydrodynamic study of inflow-outflow dynamics
Matúš Labaj, Sean M. Ressler, Michal ZajaÄek +3
Intermediate-mass black holes (IMBHs) are a missing link in black hole demographics, with only tentative observational evidence to date. Dense stellar clusters such as IRS 13E near…
Revealing EMRI/IMRI candidates with quasiperiodic ultrafast outflows
Michal ZajaÄek, Petra Suková, VladimÃr Karas +7
The first detection of the quasiperiodic ultrafast outflow in the ASASSN-20qc system was reported by Pasham et al. (2024). The outflow is revealed in the soft X-ray spectra as an a…