3 papers
astro-ph.GA2026
What kinds of strong star--black-hole encounters in AGN disks occur, and how often?
R. O'Shaughnessy, Z. Rosenberg, J. Nordhaus
Disks surrounding active galactic nuclei contain many stars and black holes, which will inevitably encounter one another. The outcome of these encounters depends on how closely and…
gr-qc2026
Physics-based phenomenological modeling of binary black hole hierarchical formation 1: Synthetic universes from globular cluster simulations for GWTC
R. O'Shaughnessy, R. Mechum, M. Qazalbash +2
We iteratively model the GWTC-5.0 binary-black-hole census with three components. First, a physically normalized population from Rapster globular-cluster simulations spans cluster…
astro-ph.HE2026
JWST Nebular Spectroscopy of SN 2023qov: Circumstellar Dust Emission in a Normal Type Ia Supernova
Colin W. Macrie, Conor Larison, Huei Sears +43
We present panchromatic observations of the Type Ia supernova (SN Ia) 2023qov, ranging from 2 weeks before to 1 year after maximum light. JWST near- and mid-infrared sp…