252 citations · 3.5k across the 60 of their papers we have counts for
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The behaviour of shape and velocity anisotropy in dark matter haloes
Martin Sparre, Steen H. Hansen
Dark matter haloes from cosmological N-body simulations typically have triaxial shapes and anisotropic velocity distributions. Recently it has been shown that the velocity anisotro…
A search for thermal X-ray signatures in Gamma-Ray Bursts II: The Swift sample
M. Sparre, R. L. C. Starling
In several gamma-ray bursts (GRBs) excess emission, in addition to the standard synchrotron afterglow spectrum, has been discovered in the early time X-ray observations. It has bee…
Asymmetric velocity anisotropies in remnants of collisionless mergers
Martin Sparre, Steen H. Hansen
Dark matter haloes in cosmological N-body simulations are affected by processes such as mergers, accretion and the gravitational interaction with baryonic matter. Typically the ana…
A derivation of (half) the dark matter distribution function
Steen H. Hansen, Martin Sparre
All dark matter structures appear to follow a set of universalities, such as phase-space density or velocity anisotropy profiles, however, the origin of these universalities remain…
The optically unbiased GRB host (TOUGH) survey. V. VLT/X-shooter emission-line redshifts for Swift GRBs at z~2
Thomas Krühler, Daniele Malesani, Bo Milvang-Jensen +7
We present simultaneous optical and near-infrared (NIR) spectroscopy of 19 Swift GRB host galaxies with VLT/X-shooter with the aim of measuring their redshifts. Galaxies were selec…
On the sizes of z>2 Damped Lyman-alpha Absorbing Galaxies
J. -K. Krogager, J. P. U. Fynbo, P. Møller +5
Recently, the number of detected galaxy counterparts of z > 2 Damped Lyman-alpha Absorbers in QSO spectra has increased substantially so that we today have a sample of 10 detection…