Savvas M. Koushiappas

TL;DR: New limits on the annihilation cross section of weakly interacting massive particles based on the joint analysis of seven Milky Way dwarfs using a frequentist Neyman construction and Pass 7 data from the Fermi Gamma-Ray Space Telescope are presented.

TL;DR: In this paper, a cosmologically motivated model is presented in which the seeds of supermassive black holes form out of the lowest angular momentum gas in protogalaxies at high redshift.

TL;DR: In this article, the authors quantify the expected dark matter signal from 20 Milky Way dwarfs using a uniform analysis of the most recent stellar-kinematic data available, assuming that the observed stellar populations are equilibrium tracers of spherically symmetric gravitational potentials that are dominated by dark matter.

TL;DR: In this paper, the authors used kinematic data from three nearby, extremely low luminosity Milky Way dwarf galaxies (Ursa Major II, Willman 1, and Coma Berenices) to constrain the properties of their dark matter halos, and from these they made predictions for the γ-ray flux from annihilation of dark matter particles in these halos.

TL;DR: In this paper, the authors examined the prospects for detecting gamma-rays from dark matter annihilation in the six most promising dwarf spheroidal satellite galaxies of the Milky Way and showed that Ursa Minor and Draco are the most promising dSphs for gamma-ray detection with GLAST and other planned observatories.