8 papers
Weighing the Milky Way's Satellite Galaxies Using Pulsar Accelerations
Thomas Donlon, Sukanya Chakrabarti, Jason A. S. Hunt
The properties of dwarf galaxies orbiting the Milky Way (MW) are useful for testing models of the formation of our Galaxy, and by extension various theories of cosmology. Recent ef…
Dynamical Origins of Azimuthal Metallicity Variations in the Galactic Disk: Insights from Kinematic Ridges with Gaia
Carlos Jurado, Keith Hawkins, Jason A. S. Hunt +4
Kinematic and spectroscopic studies in the past few years have revealed coherent azimuthal metallicity variations across the Milky Way's disk that may be the result of dynamical pr…
The dark matter wake of a galactic bar revealed by multichannel Singular Spectral Analysis
Jason A. S. Hunt, Michael S. Petersen, Martin D. Weinberg +7
The Milky Way is known to contain a stellar bar, as are a significant fraction of disc galaxies across the universe. Our understanding of bar evolution, both theoretically and thro…
The phase spiral's origin and evolution: indications from its varying properties across the Milky Way disk
Axel Widmark, Kiyan Tavangar, Josh Kalish +2
The phase spiral is a perturbation to the vertical phase-space distribution of stars in the Milky Way disk. We study the phase spiral's properties and how they vary with spatial po…
Shaping the Milky Way: The interplay of mergers and cosmic filaments
Arpit Arora, Nicolás Garavito-Camargo, Robyn E. Sanderson +12
The large-scale morphology of Milky Way (MW)-mass dark matter (DM) halos is shaped by two key processes: filamentary accretion from the cosmic web and interactions with massive sat…
Formation of the Two-Armed Phase Spiral from Multiple External Perturbations
Junxian Lin, Zhao-Yu Li, Rui Guo +3
Recent studies using the Gaia DR3 data have revealed a two-armed phase spiral in the phase space in the inner disk. In this study, we present new features of the two-armed…