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The instrumental polarization of the Nasmyth focus polarimetric differential imager NAOS/CONICA (NACO) at the VLT - Implications for time-resolved polarimetric measurements of Sgr A*
G. Witzel, A. Eckart, R. M. Buchholz +9
We report on the results of calibrating and simulating the instrumental polarization properties of the ESO VLT adaptive optics camera system NAOS/CONICA (NACO) in the Ks-band. We u…
Coordinated NIR/mm observations of flare emission from Sagittarius A*
D. Kunneriath, G. Witzel, A. Eckart +28
We report on a successful, simultaneous observation and modelling of the millimeter (mm) to near-infrared (NIR) flare emission of the Sgr A* counterpart associated with the superma…
Cometary shaped sources at the Galactic Center - Evidence for a wind from the central 0.2 pc
K. Muzic, A. Eckart, R. Schoedel +2
In 2007 we reported two cometary shaped sources in the vicinity of Sgr A* (0.8" and 3.4" projected distance), named X7 and X3. The symmetry axes of the two sources are aligned to w…
The extreme luminosity states of Sagittarius A*
N. Sabha, G. Witzel, A. Eckart +10
We discuss mm-wavelength radio, 2.2-11.8um NIR and 2-10 keV X-ray light curves of the super massive black hole (SMBH) counterpart of Sagittarius A* (SgrA*) near its lowest and high…