147 citations · 1.1k across the 30 of their papers we have counts for
4 papers · 1 filter
Soft X-ray Excess in the Coma Cluster from a Cosmic Axion Background
Stephen Angus, Joseph P. Conlon, M. C. David Marsh +2
We show that the soft X-ray excess in the Coma cluster can be explained by a cosmic background of relativistic axions converting into photons in the cluster magnetic field. We prov…
Charting an Inflationary Landscape with Random Matrix Theory
M. C. David Marsh, Liam McAllister, Enrico Pajer +1
We construct a class of random potentials for N >> 1 scalar fields using non-equilibrium random matrix theory, and then characterize multifield inflation in this setting. By stipul…
Searching for a 0.1-1 keV Cosmic Axion Background
Joseph P. Conlon, M. C. David Marsh
Primordial decays of string theory moduli at z \sim 10^{12} naturally generate a dark radiation Cosmic Axion Background (CAB) with 0.1 - 1 keV energies. This CAB can be detected th…
The Cosmophenomenology of Axionic Dark Radiation
Joseph P. Conlon, M. C. David Marsh
Relativistic axions are good candidates for the dark radiation for which there are mounting observational hints. The primordial decays of heavy fields produce axions which are ultr…