Browsing by Subject "Astronomische Beobachtungen vom Weltraum aus"
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Development of a wide bandwidth array acousto optical spectrometer for the Herschel Satellite Mission (Univ. Köln, 2005)The Herschel satellite observatory will explore the universe at far-infrared, submillimetre, and millimetre wavelengths. This regime of the electromagnetic spectrum is difficult to observe, because water vapour in the ...
Global modeling of comets: nucleus, neutral and ionized coma of comets 67P/Churyumov-Gerasimenko and 46P/Wirtanen - preparations for the Rosetta radio science investigations (Univ. Köln, 2003)Models of the thermal behavior of a cometary nucleus, the evolution of the neutral gas coma, the ionized cometary coma and of the interaction of the cometary plasma with the solar wind are studied in this work. The general ...
(Univ. Berlin, 2005)Optical counterparts of X-ray selected sources to a large part consist of active galactic nuclei (AGN). A large proportion of these counterparts turns out to be optically variable, and because the timescales and manner of ...
(Univ. Hamburg, 2006)