200 citations · 847 across the 26 of their papers we have counts for
4 papers · 1 filter
Disks with Jet, ADAF, or EDAF for Sgr A*
A. C. Donea, Heino Falcke, P. L. Biermann
We investigate various models of accretion disks for Sgr A*, one of the most puzzling sources in the Galaxy. The generic image we have taken into account consists of a black hole,…
Radio Variability of Sgr A* at Centimeter Wavelengths
Heino Falcke
Results of two years of continuous monitoring of flux density variations at 8.3 and 2.3 GHz of the Galactic Center super-massive black hole candidate Sgr A* are reported. The avera…
The Jet Model for Sgr A*
Heino Falcke
In this paper the jet model for the supermassive black hole candidate Sgr A* in the Center of the Galaxy is reviewed. The most recent model, with a reduced set of parameters, is ab…
Free-Free Absorption on Parsec Scales in Seyfert Galaxies
A. L. Roy, J. S. Ulvestad, A. S. Wilson +5
Seyfert galaxies come in two main types (types 1 and 2) and the difference is probably due to obscuration of the nucleus by a torus of dense molecular material. The inner edge of t…