3 papers
astro-ph.HE2026
Accreting Primordial Black Holes: Dark Matter Constituents
Brandon Curd, Richard Anantua, Nathaniel Lujan +1
We show scenarios in which primordial black hole accretion under the magnetorotational instability (MRI) uniquely relates the density of the early Universe to the abundance of pres…
astro-ph.HE2026
Probing Axions with Relativistic Jet Polarimetry
Dashon Michel Jones, Richard Anantua, Razieh Emami +1
The prospect of identifying axion signals due to axion-photon coupling induced changes to the polarization has now become a reality in view of near-horizon polarimetric observation…
astro-ph.GA2025
The "Dark-Matter Dominated" Galaxy Segue 1 Modeled with a Black Hole and no Dark Halo
Nathaniel Lujan, Karl Gebhardt, Richard Anantua +11
The dwarf spheroidal galaxy, Segue 1, is thought to have one of the largest ratios of dark matter to stellar mass. Using orbit-based dynamical models, we model Segue 1, including a…