A specific modification of Newtonian dynamics known as MOND has been shown to reproduce the dynamics of most astrophysical systems at different scales without...
Observational studies show that voids are prominent features of the large scale structure of the present day Universe. Even though their emerging from the...
Warps of disk galaxies are ubiquitous. In almost every disk galaxy a bending of the disk occurs where the stars fade away and hence where the dark matter halo...
WeCAPP - Wendelstein Calar Alto pixellensing project I. Tracing dark and bright matter in M 31
We present WeCAPP, a long term monitoring project searching for microlensing events towards M 31. Since 1997 the bulge of M 31 was monitored in two different...
What causes the accelerated expansion of the Universe?
The expansion of the Universe is in an accelerated phase. This acceleration was first estabilished by observations of SuperNovae, and has since been confirmed...
What's Wrong with Physics Today - Why the standard models are an erosion of science
The concordance model of cosmology with its constituents dark matter and dark Energy is an established description of some anomalous observations. However, a...
Where feedback fails: clues from the dynamics of massive galaxies?
It is widely understood that galaxies use, throughout the Hubble time, only a small fraction of the baryons associated to their dark matter halos to form stars...
Which haloes host Herschel-ATLAS galaxies in the local Universe?
We measure the projected cross-correlation between low-redshift (z < 0.5) far-infrared selected galaxies in the science demonstration phase (SDP) field of the...
Wide-field Precision Kinematics of the M87 Globular Cluster System
We present the most extensive combined photometric and spectroscopic study to date of the enormous globular cluster (GC) system around M87, the central giant...