Astrophysical: Dark matter

  • Publication
    Understanding the Cosmic Mass Function High-Mass Behavior
    We claim that the discrepancy found between the theoretical predictions for the cosmic mass function and those found in numerical simulations is due to the fact...
  • Publication
    Unraveling the Complexity of Dwarf Galaxy Dynamics: A Study of Binary Orbital Motions
    We investigate the impact of binary orbital motions on the dynamical modeling of dwarf galaxies with intrinsic line-of-sight velocity dispersions ( ${\sigma }_{...
  • Publication
    Upper Limit for γ-Ray Emission above 140 GeV from the Dwarf Spheroidal Galaxy Draco
    The nearby dwarf spheroidal galaxy Draco, with its high mass to light ratio, is one of the most auspicious targets for indirect dark matter (DM) searches...
  • Publication
    Upper Limits on the VHE Gamma-Ray Emission from the Willman 1 Satellite Galaxy with the Magic Telescope
    We present the result of the observation of the ultrafaint dwarf galaxy Willman 1 performed with the 17 m MAGIC telescope during 15.5 hr between March and May...
  • Publication
    Virial theorem in clusters of galaxies with MOND
    A specific modification of Newtonian dynamics known as MOND has been shown to reproduce the dynamics of most astrophysical systems at different scales without...
  • Talk
    Voids Merging Trees
    Observational studies show that voids are prominent features of the large scale structure of the present day Universe. Even though their emerging from the...
  • Talk
    Warps in galactic H I disks
    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...
  • Publication
    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...
  • Talk
    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...