260 citations · 1.1k across the 35 of their papers we have counts for
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Forming Young and Hypervelocity Stars in the Galactic Centre via Tidal Disruption of a Molecular Cloud
A. Generozov, S. Nayakshin, A. M. Madigan
The Milky Way Galaxy hosts a four million solar mass black hole, Sgr A*, that underwent a major accretion episode approximately 3-6 Myr ago. During the episode, hundreds of young m…
On the Formation of an Eccentric Nuclear Disk following the Gravitational Recoil Kick of a Supermassive Black Hole
Tatsuya Akiba, Ann-Marie Madigan
The anisotropic emission of gravitational waves during the merger of two supermassive black holes can result in a recoil kick of the merged remnant. We show here that eccentric nuc…
Bar-driven Leading Spiral Arms in a Counter-rotating Dark Matter Halo
Emma Lieb, Angela Collier, Ann-Marie Madigan
An overwhelming majority of galactic spiral arms trail with respect to the rotation of the galaxy, though a small sample of leading spiral arms has been observed. The formation of…
Photometry and Kinematics of Self-Gravitating Eccentric Nuclear Disks
Heather N. Wernke, Ann-Marie Madigan
The Andromeda Galaxy hosts an elongated nucleus with (at least) two distinct brightness peaks. The double nucleus can be explained by the projection of a thick, apsidally-aligned e…
A Lopsided Outer Solar System
Alexander Zderic, Maria Tiongco, Angela Collier +3
Axisymmetric disks of eccentric orbits in near-Keplerian potentials are unstable to an out-of-plane buckling. Recently, Zderic et al. (2020) showed that an idealized disk saturates…
The Coupling of Galactic Dark Matter Halos with Stellar Bars
Angela Collier, Ann-Marie Madigan
Resonant torques couple stellar bars to dark matter halos. Here we use high-resolution numerical simulations to demonstrate long-term angular momentum transfer between stellar bars…