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Searching for solar axions in the eV-mass region with the CCD detector at CAST
(Univ. Freiburg (Breisgau), 2009)
The CERN Axion Solar Telescope (CAST) is searching for solar axions, which could be produced in the core of the Sun via the so-called Primakoff effect. For this purpose, CAST uses a decommissioned LHC prototype magnet. In ...
On intrinsic uncertainties in earth system modelling
(Univ. Potsdam, 2006)
Various types of uncertainty plague climate change simulation, which is, in turn, a crucialelement of Earth System modelling. This fact was recognized for example in the Third Assessment Report (TAR) of the Intergovernmental ...
Electron acceleration at localized wave structures in the solar corona
(Univ. Potsdam, 2007)
Our dynamic Sun manifests its activity by different phenomena: from the 11-year cyclic sunspot pattern to the unpredictable and violent explosions in the case of solar flares. During flares, a huge amount of the stored ...
Eigenschaften von kompakten Sternen in QCD-motivierten Modellen
(Univ. Frankfurt (Main), 2005)
Kompakte Sterne stellen neben weissen Zwergen und schwarzen Löchern eine der möglichen Endzustände der Evolution von Sonnen dar. Diese extrem dichten astrophysikalischen Objekte können als Restobjekte von massiven Sternen ...
Mass distribution at the galactic centre
(Univ. Köln, 2005)
In the framework of this PhD thesis, the study of the distribution of an extended mass close to the super-massive black hole (SMBH) at the centre of our Galaxy is addressed using observational data and theoretical modelling. ...
Multi-component evolution, age and plate tectonic setting of high MG lamprophyric dikes and small gabbroic intrusions on Isla Margarita (Venezuela)
(Univ. Bochum, 1997)
Die Isla Margarita (Venezuela) am Südrand der Karibischen Platte besteht aus einem heterogenen Krustenkomplex aus Peridotiten, Metamorphiten, diversen Magmatiten und sedimentärem Deckgebirge. Die jüngsten Magmatite sind ...
Probing quasar sight lines in three dimensions
(Univ. Potsdam, 2005)
Strong damped Lyman alpha absorption (DLA) lines seen spectra of distant quasar are believed to arise when the sight line to the quasar goes trough the disc of a galaxy or a proto galaxy. Most of the neutral matter in the ...
The late Quaternary environmental and climatic history of North-East Greenland, inferred from coastal lakes
(Univ. Köln, 2009)
Eleven lakes and ponds and three lacustrine sediment sequences from coastal East and North-East Greenland were studied for recent hydrological and phytoplankton characteristics and for palaeolimnology, respectively. The ...
Inverse Comptonstreuung und die Hochenergie-Emission relativistischer Stoßwellen
(Univ. Bochum, 2005)
In dieser Arbeit wird die inverse Comptonstreuung behandelt. Bei diesem Prozess streuen Elektronen niederenergetische Photonen zu höheren Energien; für die Anwendung auf die Jets aktiver galaktischer Kerne wird der sogenannte ...
Modeling atmospheres of classical novae in X-rays with PHOENIX
(Univ. Hamburg, 2005)
PHOENIX has been used to calculate model atmospheres of classical novae in the X-ray spectral range. The models account for an expanding, one-dimensional spherically symmetric medium in full non-local thermodynamic ...