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Testing the Black Hole No-hair Theorem with Galactic Center Stellar Orbits
Hong Qi, Richard O'Shaughnessy, Patrick Brady
Theoretical investigations have provided proof-of-principle calculations suggesting measurements of stellar or pulsar orbits near the Galactic Center could strongly constrain the p…
The Contribution Of Outer HI Disks To The Merging Binary Black Hole Population
Sukanya Chakrabarti, Philip Chang, Richard O'Shaughnessy +5
We investigate the contribution of outer HI disks to the observable population of merging black hole binaries. Like dwarf galaxies, the outer HI disks of spirals have low star form…
The effects of host galaxy properties on merging compact binaries detectable by LIGO
Richard O'Shaughnessy, Jillian Bellovary, Alyson Brooks +3
Cosmological simulations of galaxy formation can produce present-day galaxies with a large range of assembly and star formation histories. A detailed study of the metallicity evolu…
Pulsar Binary Birthrates with Spin-Opening Angle Correlations
Richard O'Shaughnessy, Chunglee Kim
Empirical birthrate estimates for pulsar binaries depend on the fraction of sky subtended by the pulsar beam: the pulsar beaming fraction. This fraction depends on both the pulsar'…