86 citations · 341 across the 8 of their papers we have counts for
9 papers
Dirac vs Majorana gauginos at a 100 TeV collider
Giovanni Grilli di Cortona, Edward Hardy, Andrew J. Powell
We compare the prospects for observing theories with Majorana or Dirac gauginos at a future 100 TeV proton-proton collider. Calculating the expected discovery and exclusion regions…
Constraints on Axion-Like Particles from X-ray Observations of NGC1275
Marcus Berg, Joseph P. Conlon, Francesca Day +4
Axion-like particles (ALPs) can induce localised oscillatory modulations in the spectra of photon sources passing through astrophysical magnetic fields. Ultra-deep Chandra observat…
Galaxy Cluster Thermal X-Ray Spectra Constrain Axion-Like Particles
Joseph P. Conlon, M. C. David Marsh, Andrew J. Powell
Axion-like particles (ALPs) and photons inter-convert in the presence of a magnetic field. At keV energies in the environment of galaxy clusters, the conversion probability can bec…
A Cosmic ALP Background and the Cluster Soft X-ray Excess in A665, A2199 and A2255
Andrew J. Powell
It has been proposed that an excess in soft X-ray emission observed from many galaxy clusters can be explained by conversion into photons of axion-like particles (ALPs) in the clus…
A 3.55 keV line from : predictions for cool-core and non-cool-core clusters
Joseph P. Conlon, Andrew J. Powell
We further study a scenario in which a 3.55 keV X-ray line arises from decay of dark matter to an axion-like particle (ALP), that subsequently converts to a photon in astrophysical…
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…