Publications (27)
Enhanced Disruption of Axion Minihalos by Multiple Stellar Encounters in the Milky Way
Ian DSouza, Chris Gordon, John C. Forbes
If QCD axion dark matter formed post-inflation, axion miniclusters emerged from isocurvature fluctuations and later merged hierarchically into minihalos. These minihalos, potential…
The Disruption of Dark Matter Minihalos by Successive Stellar Encounters
Ian DSouza, Chris Gordon
Scenarios such as the QCD axion with the Peccei-Quinn symmetry broken after inflation predict an enhanced matter power spectrum on sub-parsec scales. These theories lead to the for…
Cosmic-Ray Models of the Ridge-Like Excess of Gamma Rays in the Galactic Center
Oscar Macias, Chris Gordon, Roland Crocker +1
The High-Energy Stereoscopic System (HESS) has detected diffuse TeV emission correlated with the distribution of molecular gas along the Ridge at the Galactic Center. Diffuse, non-…
The effect of kick velocities on the spatial distribution of millisecond pulsars and implications for the Galactic center excess
Harrison Ploeg, Chris Gordon
Recently it has become apparent that the Galactic center excess (GCE) is spatially correlated with the stellar distribution in the Galactic bulge. This has given extra motivation f…
Robust inference of the Galactic centre gamma-ray excess spatial properties
Deheng Song, Christopher Eckner, Chris Gordon +6
The gamma-ray Fermi-LAT Galactic centre excess (GCE) has puzzled scientists for over 15 years. Despite ongoing debates about its properties, and especially its spatial distribution…
Bayesian leave-one-out cross-validation for astrophysical model comparison using gravitational-wave background data
Shreyas Tiruvaskar, Chris Gordon
Previous work showed that ultralight-dark-matter solitons can provide dynamical friction for supermassive black-hole binaries, suppressing low-frequency power in the pulsar-timing-…