359 citations · 3.8k across the 61 of their papers we have counts for
6 papers · 1 filter
Detecting unresolved moving sources in a diffuse background
Alex Geringer-Sameth, Savvas M. Koushiappas
We present a statistical technique which can be used to detect the presence and properties of moving sources contributing to a diffuse background. The method is a generalization of…
Gravitational Nanolensing from Subsolar Mass Dark Matter Halos
Jacqueline Chen, Savvas M. Koushiappas
We investigate the feasibility of extracting the gravitational nanolensing signal due to the presence of subsolar mass halos within galaxy-sized dark matter halos. We show that sub…
Non-universality of halo profiles and implications for dark matter experiments
Darren S. Reed, Savvas M. Koushiappas, Liang Gao
We explore the cosmological halo-to-halo scatter of the distribution of mass within dark matter halos utilizing a well-resolved statistical sample of clusters from the cosmological…
Constraining Dark Matter in Galactic Substructure
Eric J. Baxter, Scott Dodelson, Savvas M. Koushiappas +1
Detecting the dark matter annihilation signal from Galactic substructure, or subhalos, is an important challenge for high-energy gamma-ray experiments. In this paper we discuss det…
The distribution of annihilation luminosities in dark matter substructure
Savvas M. Koushiappas, Andrew R. Zentner, Andrey V. Kravtsov
We calculate the probability distribution function (PDF) of the expected annihilation luminosities of dark matter subhalos as a function of subhalo mass and distance from the Galac…
Galactic Substructure and Dark Matter Annihilation in the Milky Way Halo
Marc Kamionkowski, Savvas M. Koushiappas, Michael Kuhlen
We study the effects of substructure on the rate of dark-matter annihilation in the Galactic halo. We use an analytic model for substructure that can extend numerical simulation re…