5 papers · 1 filter
Winding, Unwinding, Rewinding the Gaia Phase Spiral
Neige Frankel, Marcin Semczuk, Teresa Antoja +10
The Gaia Space Satellite has transformed the field of Galactic Dynamics by collecting 6D phase space information for hundreds of millions of stars. In 2018, it enabled the discover…
Mean Mass Density near the Sun from the Divergence Theorem and Pulsar Accelerations
Thomas Donlon, Lawrence M. Widrow, Sukanya Chakrabarti
We introduce a new, non-parametric method for estimating the mass enclosed within a sphere of arbitrary radius centered on the Sun. The method is based on the divergence theorem as…
Simulating the Milky Way bar and bulge with an initially Sérsic disc
N. Deg, Victor P. Debattista, Lawrence Widrow +3
We model the formation of a bar plus box/peanut bulge (BP bulge) component in a Milky Way-like disc galaxy using simulations of isolated multi-component systems that evolve from eq…
The Nearly Universal Disk Galaxy Rotation Curve
Raj Patel, Nikhil Arora, Stéphane Courteau +3
The Universal Rotation Curve (URC) of disk galaxies was originally proposed to predict the shape and amplitude of any rotation curve (RC) based solely on photometric data. Here, th…
Galactic Structure From Binary Pulsar Accelerations: Beyond Smooth Models
Thomas Donlon, Sukanya Chakrabarti, Lawrence M. Widrow +3
We measure the line-of-sight accelerations of 26 binary pulsars due to the Milky Way's gravitational potential, and produce a 3-dimensional map of the acceleration field of the Gal…