Gravitational waves as a probe of dark matter minispikes
Physical Review D American Physical Society (APS) 91:4 (2015) 044045
Glow in the dark matter: observing galactic halos with scattered light.
Physical review letters 114:5 (2015) 051303
Abstract:
We consider the observation of diffuse halos of light around the discs of spiral galaxies, as a probe of the interaction cross section between dark matter (DM) and photons. Using the galaxy M101 as an example, we show that for a scattering cross section at the level of 10(-23)(m/GeV) cm(2) or greater dark matter in the halo will scatter light out from the more luminous center of the disc to larger radii, contributing to an effective increased surface brightness at the edges of the observed area on the sky. This allows us to set an upper limit on the DM-photon cross section using data from the Dragonfly instrument. We then show how to improve this constraint, and the potential for discovery, by combining the radial profile of DM-photon scattering with measurements at multiple wavelengths. Observation of diffuse light presents a new and potentially powerful way to probe the interactions of dark matter with photons, a way that is complementary to existing searches.A SIMPLE TECHNIQUE FOR PREDICTING HIGH-REDSHIFT GALAXY EVOLUTION
The Astrophysical Journal American Astronomical Society 799:1 (2015) 32
What can we learn from a sharply falling positron fraction?
EPJ Web of Conferences EDP Sciences 105 (2015) 02003
STELLAR SIGNATURES OF AGN-JET-TRIGGERED STAR FORMATION
The Astrophysical Journal American Astronomical Society 796:2 (2014) 113