304 citations · 1.2k across the 23 of their papers we have counts for
23 papers
Theory of G2 Cloud Multi-Wavelength Emission
Roman V. Shcherbakov
An object called G2 was recently discovered moving towards the supermassive black hole in the Galactic Center. G2 emits infrared (IR) lines and continuum, which allows constraining…
The Megasecond Chandra XVP Observation of NGC 3115: Witnessing the Flow of Hot Gas within the Bondi Radius
Ka-Wah Wong, Jimmy A. Irwin, Roman V. Shcherbakov +3
Observational confirmation of hot accretion model predictions has been hindered by the challenge to resolve spatially the Bondi radii of black holes with X-ray telescopes. Here, we…
The Properties and Fate of the Galactic Center G2 Cloud
Roman V. Shcherbakov
The object G2 was recently discovered descending into the gravitational potential of the supermassive black hole (BH) Sgr A*. We test the photoionized cloud scenario, determine the…
Dissecting X-ray-emitting Gas around the Center of our Galaxy
Q. D. Wang, M. A. Nowak, S. B. Markoff +16
Most supermassive black holes (SMBHs) are accreting at very low levels and are difficult to distinguish from the galaxy centers where they reside. Our own Galaxy's SMBH provides a…
Modeling Hot Gas Flow in the Low-Luminosity Active Galactic Nucleus of NGC3115
Roman V. Shcherbakov, Ka-Wah Wong, Jimmy A. Irwin +1
Based on the dynamical black hole (BH) mass estimates, NGC3115 hosts the closest billion solar mass BH. Deep studies of the center revealed a very underluminous active galactic nuc…
Submillimeter Quasi-Periodic Oscillations in Magnetically Choked Accretion Flows Models of Sgr A*
Roman V. Shcherbakov, Jonathan C. McKinney
High-frequency quasi-periodic oscillations (QPOs) appear in general-relativistic magnetohydrodynamic simulations of magnetically choked accretion flows around rapidly rotating blac…