3 papers
astro-ph.GA2026
The Spin Angular Momentum and Black Hole Mass Components of Sagittarius A*
Ruth A. Daly
The dimensionless spin angular momentum, dimensionless spin function, and blackhole mass components of Sagittarius A* (Sgr A*) were obtained by Daly et al. (2024) by applying the o…
astro-ph.GA2025
Powerful Radio Sources as Probes of Black Hole Physics
Ruth A. Daly
Powerful jetted radio sources for which the luminosity in directed kinetic energy has been empirically determined, independent of assumptions, are considered. The total outflow lif…
astro-ph.GA2023
New Black Hole Spin Values for Sagittarius A* Obtained with the Outflow Method
Ruth A. Daly, Megan Donahue, Christopher P. O'Dea +3
Six archival Chandra observations are matched with eight sets of radio data and studied in the context of the outflow method to measure and study the spin properties of $\rm{Sgr ~A…