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GRAVITY: getting to the event horizon of Sgr A*
F. Eisenhauer, G. Perrin, W. Brandner +45
We present the second-generation VLTI instrument GRAVITY, which currently is in the preliminary design phase. GRAVITY is specifically designed to observe highly relativistic motion…
A direct and differential imaging search for sub-stellar companions to epsilon Indi A
K. Geissler, S. Kellner, W. Brandner +7
We have carried out a direct and differential imaging search for sub-stellar companions to eps Indi A using the adaptive optics system NACO at the ESO VLT. The observations were ca…
New optical polarization measurements of the Crab pulsar
G. Kanbach, A. Slowikowska, S. Kellner +1
The Crab nebula and its pulsar have been observed for about 3 hours with the high-speed photo-polarimeter OPTIMA in January 2002 at the Calar Alto 3.5m telescope. The Crab pulsar i…