201 citations · 223 across the 5 of their papers we have counts for
6 papers
Cluster temperatures and non-extensive thermo-statistics
Steen H. Hansen
We propose a novel component to the understanding of the temperature structure of galaxy clusters which does not rely on any heating or cooling mechanism. The new ingredient is the…
A universal density slope - velocity anisotropy relation for relaxed structures
Steen H. Hansen, Ben Moore
We identify a universal relation between the radial density slope α(r) and the velocity anisotropy β(r) for equilibrated structures. This relation holds for a variety of systems, i…
SZ cluster science with the Planck HFI experiment
Steen H. Hansen
In the near future the Planck satellite will gather impressive information about the anisotropies of the cosmic microwave background and about the galaxy clusters which perturb tha…
Searching for the relativistic Sunyaev-Zeldovich effect with the PLANCK experiment
Torsten A. Ensslin, Steen H. Hansen
Populations of relativistic electrons in clusters of galaxies should imprint a characteristic spectral distortion signature on the Cosmic Microwave Background photons - the relativ…
Galactic hydraulic drop?
Steen H. Hansen
Galaxies and galaxy clusters are observed to have a rather non-trivial radial behaviour. The observations show that the radial profiles change from one power-law profile near the c…
Producing massive sterile neutrinos as warm Dark Matter
A. D. Dolgov, S. H. Hansen
This paper has been withdrawn by the authors. This paper started with a wrong term describing elastic scattering. The correct form of the kinetic equations for the density matrix a…