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Relative velocity of dark matter and barions in clusters of galaxies and measurements of their peculiar velocities
Klaus Dolag, Rashid Sunyaev
The increasing sensitivity of current experiments, which nowadays routinely measure the thermal SZ effect within galaxy clusters, provide the hope that peculiar velocities of indiv…
Rise and Fall of Radio Halos in Simulated Merging Galaxy Clusters
Julius Donnert, Klaus Dolag, Gianfranco Brunetti +1
We present the first high resolution MHD simulation of cosmic-ray electron reacceleration by turbulence in cluster mergers. We use an idealised model for cluster mergers, combined…
Less is more: How cosmic voids can shed light on dark energy
E. G. Patrick Bos, Rien van de Weygaert, Jarno Ruwen +2
We showed how the shape of cosmic voids can be used to distinguish between different models of dark energy using galaxy positions.
The Dark Halo - Spheroid Conspiracy and the Origin of Elliptical Galaxies
Rhea-Silvia Remus, Andreas Burkert, Klaus Dolag +4
Dynamical modeling and strong lensing data indicate that the total density profiles of early-type galaxies are close to isothermal, i.e., rho_tot ~ r^gamma with gamma approx -2. To…
Investigating the velocity structure and X-ray observable properties of simulated galaxy clusters with PHOX
Veronica Biffi, Klaus Dolag, Hans Boehringer
Non-thermal motions in the intra-cluster medium (ICM) are believed to play a non-negligible role in the pressure support to the total gravitating mass of galaxy clusters. Future X-…
Galactic Winds in Cosmological Simulations of the Circumgalactic Medium
Paramita Barai, Matteo Viel, Stefano Borgani +7
(Abridged) We explore new observationally-constrained sub-resolution models of galactic outflows and investigate their impact on the circumgalactic medium (CGM) over redshifts z =…