Conveners
DM III
- Ian Lewis (The University of Kansas)
Dark matter halos, produced during cosmic structure formation, organize themselves under gravity in an expanding background. We show that some novel features of their distributions can be understood in the framework of network theory by using a preferential attachment mechanism. For the subhalos sitting inside their least massive hosts, we create links based on their spatial extensions and...
We study the solar emission of light dark sector particles that self-interact strongly enough to self-thermalize. The resulting dark fluid accelerates under its own thermal pressure and attains highly relativistic bulk velocities in the solar system. Compared to the ordinary free-streaming scenario, the local dark outflow has a much higher number density and correspondingly a much lower...
Any dark matter spikes surrounding black holes in our Galaxy are sites of significant dark matter annihilation, leading to a potentially detectable neutrino signal. In this paper we examine $10-10^5 M_\odot$ black holes associated with dark matter spikes that formed in early minihalos and still exist in our Milky Way Galaxy today, in light of neutrino data from the ANTARES and IceCube...
Dark radiation (DR) appears as a new physics candidate in various scenarios beyond the Standard Model. While it is often assumed that perturbations in DR are adiabatic, they can easily have an isocurvature component if more than one field was present during inflation, and whose decay products did not all thermalize with each other. In this talk, I will discuss the constraints on both...
