Publications (8)
New Pathways to the Relic Abundance of Vector-Portal Dark Matter
Patrick J. Fitzpatrick, Hongwan Liu, Tracy R. Slatyer +1
We fully explore the thermal freezeout histories of a vector-portal dark matter model, in the region of parameter space in which the ratio of masses of the dark photon …
Early-Type Galaxy Star Formation Histories in Different Environments
Patrick J. Fitzpatrick, Genevieve J. Graves
We use very high-S/N stacked spectra of 29,000 nearby quiescent early-type galaxies (ETGs) from the Sloan Digital Sky Survey (SDSS) to investigate variations in their star fo…
New Thermal Relic Targets for Inelastic Vector-Portal Dark Matter
Patrick J. Fitzpatrick, Hongwan Liu, Tracy R. Slatyer +1
We examine the vector-portal inelastic dark matter (DM) model with DM mass and dark photon mass , in the `forbidden dark matter' regime where $1 \lesssim m_{A'}/m_Ï…
Capture and Decay of Electroweak WIMPonium
Pouya Asadi, Matthew Baumgart, Patrick J. Fitzpatrick +2
The spectrum of Weakly-Interacting-Massive-Particle (WIMP) dark matter generically possesses bound states when the WIMP mass becomes sufficiently large relative to the mass of the…
Searching for exotic scalars at fusion reactors
Chaja Baruch, Patrick J. Fitzpatrick, Tony Menzo +3
The energy created in deuterium-tritium fusion reactors originates from a high-intensity neutron flux interacting with the reactor's inner walls. The neutron flux can also be used…
Dispersion in Neptune's Zonal Wind Velocities from NIR Keck AO Observations in July 2009
Patrick J. Fitzpatrick, Imke de Pater, Statia Luszcz-Cook +2
We report observations of Neptune made in H-(1.4-1.8 μm) and K'-(2.0-2.4 μm) bands on 14 and 16 July 2009 from the 10-m W.M. Keck II Telescope using the near-infrared camera NIRC…