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- Helmholtz Institute JenaDE407 papers
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58 papers · 1 filter
Dynamical evolution and leading order gravitational wave emission of Riemann-S binaries
Dörte Hansen
An approximate strategy for studying the evolution of binary systems of extended objects is introduced. The stars are assumed to be polytropic ellipsoids. The surfaces of constant…
Multiplicity-Study of Exoplanet Host Stars
M. Mugrauer, R. Neuhäuser, T. Mazeh +1
We carry out a systematic search campaign for wide companions of exoplanet host stars to study their multiplicity and its influence on the long-term stability and the orbital param…
Matter-screened Casimir force and Casimir-Polder force in planar structures
Christian Raabe, Dirk-Gunnar Welsch
Using a recently developed theory of the Casimir force (Raabe C and Welsch D-G 2005 Phys. Rev. A 71 013814), we calculate the force that acts on a plate in front of a planar wall a…
Infrared extinction by homogeneous particle aggregates of SiC, FeO and SiO2: comparison of different theoretical approaches
Anja C. Andersen, Harald Mutschke, Thomas Posch +2
Particle shape and aggregation have a strong influence on the spectral profiles of infrared phonon bands of solid dust grains. Calculating these effects is difficult due to the oft…
X-ray emission of brown dwarfs: Towards constraining the dependence on age, luminosity, and temperature
B. Stelzer, G. Micela, E. Flaccomio +7
Three brown dwarfs in different evolutionary stages have been observed with the Chandra X-ray Observatory. Combining the new observations with previous studies presented in the lit…
The deterministic nature of conservative post-Newtonian accurate dynamics of compact binaries with leading order spin-orbit interaction
Achamveedu Gopakumar, Christian Koenigsdoerffer
We formally show that the conservative second post-Newtonian (PN) accurate dynamics of spinning compact binaries moving in eccentric orbits, when spin effects are restricted to the…