Yearbook 2011

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Dusty tori in active galactic nuclei

Max Planck Institute for Radio Astronomy Tristram, Konrad R. W.; Kishimoto, Makoto; Weigelt, Gerd
Many galaxies host supermassive black holes with masses of millions to billions of solar masses in their centres. The growth of the black holes is fundamental for the evolution of galaxies. A toroidal distribution of gas and dust, the so-called dusty torus, plays a major role as a reservoir of material for the accretion onto the black hole. Only since a few years it is possible to study the compact structures and physical properties of such tori directly using infrared interferometry. more

LOFAR - the new software telescope for long radio waves

Max Planck Institute for Radio Astronomy Beck, Rainer; Verbiest, Joris P. W.; Anderson, James M.; Kramer, Michael
The new digitally steered meter-wave radio telescope LOFAR (Low Frequency Array), designed by ASTRON/Netherlands, has fibre-connected stations in the Netherlands, Germany, France, Sweden, and the UK. Jointly operated as the International LOFAR Telescope (ILT), it has the world’s largest collecting area. It opens up new possibilities in many astronomical research areas. The MPI for Radio Astronomy investigates the emission of pulsars and to measure magnetic fields in pulsar-wind nebulae, in our Milky Way and in external galaxies. more
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