2 papers
astro-ph.GA2025
The physical origin of positive metallicity radial gradients in high-redshift galaxies: insights from the FIRE-2 cosmological hydrodynamic simulations
Xunda Sun, Xin Wang, Xiangcheng Ma +11
Using the FIRE-2 cosmological zoom-in simulations, we investigate the temporal evolution of gas-phase metallicity radial gradients of Milky Way-mass progenitors in the redshift ran…
hep-ph2025
Gravitational Particle Production of Scalars: Analytic and Numerical Approaches Including Early Reheating
Leah Jenks, Edward W. Kolb, Keyer Thyme
Cosmological gravitational particle production (GPP) is a generic mechanism by which particles are produced during the inflationary epoch. In this work we consider the GPP of massi…