208 citations · 1.3k across the 62 of their papers we have counts for
6 papers · 1 filter
Mini-spiral as source of material for Sgr A* in bright state
Bozena Czerny, Vladimir Karas, Devaky Kunneriath +1
The question of the origin of the gas supplying the accretion process is pertinent especially in the context of enhanced activity of Galactic Center during the past few hundred yea…
Source-intrinsic near-infrared properties of Sgr A*: Total intensity measurements
G. Witzel, A. Eckart, M. Bremer +12
We present a comprehensive data description for Ks-band measurements of Sgr A*. We characterize the statistical properties of the variability of Sgr A* in the near-infrared, which…
Flare emission from Sagittarius A*
A. Eckart, M. Garcia-Marin, S. N. Vogel +18
Based on Bremer et al. (2011) and Eckart et al. (2012) we report on simultaneous observations and modeling of the millimeter, near-infrared, and X-ray flare emission of the source…
Near-infrared proper motions and spectroscopy of infrared excess sources at the Galactic Center
A. Eckart, K. Muzic, S. Yazici +11
There are a number of faint compact infrared excess sources in the central stellar cluster of the Milky Way. Their nature and origin is unclear. In addition to several isolated obj…
Frame-dragging effects on magnetic fields near a rotating black hole
V. Karas, O. Kopacek, D. Kunneriath
We discuss the role of general relativity frame dragging acting on magnetic field lines near a rotating (Kerr) black hole. Near ergosphere the magnetic structure becomes strongly i…
The Galactic centre mini-spiral in the mm-regime
D. Kunneriath, A. Eckart, S. N. Vogel +10
The mini-spiral is a feature of the interstellar medium in the central ~2 pc of the Galactic center. It is composed of several streamers of dust and ionised and atomic gas with tem…