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Cosmological backreaction
(Univ. Bielefeld, 2008)
Despite the glorious successes of modern cosmology, our understanding of the cosmic substitution is still limited to a tiny fraction (a few per cents only). Accelerated expansion of the Universe, caused by the mysterious ...
Existence and stability of stellardynamic models
(Univ. Bayreuth, 2008)
Airborne and ground level flask sampling for regional carbon budgets
(Univ. Hamburg, 2005)
Aim of the study was to test the capability of multiple trace gas analyses for the assessment of regional carbon budgets. Therefore, air samples were taken by airborne and ground level activities during several field ...
The Impact of Solar Activity on Forecasting the Upper Atmosphere via Assimilation of Electron Density Data
(
- Space Weather
, 2021-05-20)
This study presents a comprehensive comparison of the impact of solar activity on forecasting the upper atmosphere through assimilation of radio occultation (RO)‐derived electron density (Ne) into a physics‐based model ...
Detailed Seismic Bathymetry Beneath Ekström Ice Shelf, Antarctica: Implications for Glacial History and Ice‐Ocean Interaction
(
- Geophysical Research Letters
, 2020-05-20)
The shape of ice shelf cavities are a major source of uncertainty in understanding ice‐ocean interactions. This limits assessments of the response of the Antarctic ice sheets to climate change. Here we use vibroseis seismic ...
Lateral distribution of cosmic ray muons underground
(Univ. Siegen, 2006)
The CosmoALEPH experiment, located underground at the LEP e+e? storage ring at CERN at a depth of 320 m water equivalent, was used to study the chemical composition of primary cosmic rays up to 10 PeV energies from the ...
On the relevance of adhesion
(Univ. Potsdam, 2006)
Seit ihrer Entdeckung im Jahre 1610 durch Galileo Galilei faszinieren die Ringe des Saturn sowohl Laien als auch Experten. Planetare Ringe finden sich in der Äquatorialebene aller vier Riesenplaneten unseres Sonnensystems ...
Johann Heinrich Lamberts Cosmologische Briefe
(Univ. Bremen, 2007)
Lambert, cosmological letters, fixed stars, nebulae, island universe, teleology, teleological, enlightenment, enlightened, romanticism, romantic, hypothesis, physical-teleological, speculation, imagination, stability, solar ...
Aktive Regionen der Sonnenoberfläche und ihre zeitliche Variation in zweidimensionaler Spektro-Polarimetrie
(Univ. Potsdam, 2008)
Die Arbeit beschreibt die Analyse von Beobachtungen zweier Sonnenflecken in zweidimensionaler Spektro-Polarimetrie. Die Daten wurden mit dem Fabry-Pérot-Interferometer der Universität Göttingen am Vakuum-Turm-Teleskop auf ...
Periodic variability in active galactic nuclei
(Univ. Köln, 2008)
In this doctoral thesis, multi-frequency very long baseline interferometry observations together with multi-frequency total flux-density variability data of compact relativistic jets in active galactic nuclei are presented ...