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Differentiation of asteroids in the early solar system from Hf-W systematics
(Univ. Köln, 2008)
The first major differentiation in primitive planetesimals is the formation of metal- or metal-sulfide cores. To constrain the time of asteroidal differentiation, meteoritic metals and silicates coexisting with metals were ...
The structure and interaction history of moderate luminosity mergers
(Univ. Bochum, 2006)
Wechselwirkungen und insbesondere Kollisionen von Galaxien sind zwei der wichtigsten Elemente der Galaxienentwicklung. Bisher lag das Hauptaugenmerk auf der Untersuchung von Kollisionen von Spiralgalaxien (S+S). In der ...
The sub-damped Ly a system [alpha system] toward HE 0515-4414
(Univ. Hamburg, 2006)
Context Extragalactic absorbers with column densities exceeding NH I > 2 × 1020 hydrogen atoms cm-2 are generally termed damped Ly alpha (DLA) systems. The absorbers are basically comprised of predominantly neutral gas, ...
Traveltime computation and migration in anisotropic media
(Univ. Hamburg, 2007)
For seismic imaging of complex 3-D structures by e.g. prestack Kirchhoff depth migration large amounts of traveltime tables are required. This work provides a wavefront-oriented ray tracing technique for multi-valued ...
An adaptive shallow water model on the sphere
(Univ. Bremen, 2009)
This thesis describes the adaptive shallow water model PLASMA-FEMmE. It solves on the sphere the shallow water equations, the prototype for partial differential equations in atmospheric modeling, using a semi-implicit ...
Die Niederschlags- und Starkregenentwicklung der letzten 100 Jahre im Mitteldeutschen Trockengebiet als Indikatoren möglicher Klimaänderungen
(Univ. Halle, 2007)
Zsfassung in engl. Sprache
X-ray studies of ultraluminous infrared galaxies observed with XMM-Newton
(Univ. Hamburg, 2006)
Numerical simulations of neutron star - black hole mergers
(Univ. Potsdam, 2006)
Collisions of black holes and neutron stars, named mixed binaries in the following, are interesting because of at least two reasons. Firstly, it is expected that they emit a large amount of energy as gravitational waves, ...
Numerical simulation of magma ascent by dykes and crust formation at spreading centres
(Univ. Hamburg, 2005)
Mittelozeanische Rücken finden sich in allen größeren Ozeanbecken der Erde. Sie besitzen die weltweit höchste Produktionsrate an Extrusiv- und Intrusivgesteinen. Bildung ozeanischer Kruste und Vulkanismus an divergenten ...
Spot evolution and differential rotation of the ultrafast rotator Speedy Mic
(Univ. Hamburg, 2004)
The Sun shows a variety of transient surface features which are summarized as solar activity. Activity phenomena, apparently similar to the solar case, are also observed on stars other than the Sun. Stellar activity is ...