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Impact of the Relative Motion between the Dark Matter and Baryons on the First Stars
Anastasia Fialkov, Rennan Barkana, Dmitriy Tseliakhovich +1
Recently the initial supersonic relative velocity between the dark matter and baryons was shown to have an important effect on galaxy formation at high redshift. We study the impac…
Profiles of Dark Matter Velocity Anisotropy in Simulated Clusters
Doron Lemze, Rick Wagner, Yoel Rephaeli +6
We report statistical results for dark matter (DM) velocity anisotropy, β, from a sample of some 6000 cluster-size halos (at redshift zero) identified in a ΛCDM hydrodynamical adap…
Triaxiality and non-thermal gas pressure in Abell 1689
Andrea Morandi, Marceau Limousin, Yoel Rephaeli +4
Clusters of galaxies are uniquely important cosmological probes of the evolution of the large scale structure, whose diagnostic power depends quite significantly on the ability to…
Studying cosmic reionization with observations of the global 21-cm signal
Andrea Morandi, Rennan Barkana
We explore the ability of observations of the global brightness temperature of the 21-cm signal to constrain the reionization history and the properties of the ionizing sources. In…