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The two states of Sgr A* in the near-infrared: bright episodic flares on top of low-level continuous variability
K. Dodds-Eden, S. Gillessen, T. K. Fritz +11
In this paper we examine properties of the variable source Sgr A* in the near-infrared (NIR) using a very extensive Ks-band data set from NACO/VLT observations taken 2004 to 2009.…
The structure of gravitationally unstable gas-rich disk galaxies
Michael Aumer, Andreas Burkert, Peter H. Johansson +1
We use a series of idealized, numerical SPH simulations to study the formation and evolution of galactic, gas-rich disks forming from gas infall within dark matter halos. The tempe…
The Galactic Center Massive Black Hole and Nuclear Star Cluster
Reinhard Genzel, Frank Eisenhauer, Stefan Gillessen
The Galactic Center is an excellent laboratory for studying phenomena and physical processes that may be occurring in many other galactic nuclei. The Center of our Milky Way is by…
Time Dependent Models of Flares from Sagittarius A*
Katie Dodds-Eden, Prateek Sharma, Eliot Quataert +4
The emission from Sgr A*, the supermassive black hole in the Galactic Center, shows order of magnitude variability ("flares") a few times a day that is particularly prominent in th…
GC-IRS13E - A puzzling association of three early-type stars
Tobias K. Fritz, Stefan Gillessen, Katie Dodds-Eden +9
We present a detailed analysis of high resolution near-infrared imaging and spectroscopy of the potential star cluster IRS13E very close to the massive black hole in the Galactic C…
The power of monitoring stellar orbits
S. Gillessen, F. Eisenhauer, H. Bartko +5
The center of the Milky Way hosts a massive black hole. The observational evidence for its existence is overwhelming. The compact radio source Sgr A* has been associated with a bla…