152 citations · 189 across the 11 of their papers we have counts for
11 papers
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…
Empirical Modeling of Magnetic Braking in Millisecond Pulsars to Measure the Local Dark Matter Density and Effects of Orbiting Satellite Galaxies
Thomas Donlon, Sukanya Chakrabarti, Sophia Vanderwaal +3
We present a novel method that enables us to estimate the acceleration of individual millisecond pulsars (MSPs) using only their spin period and its time derivative. For our binary…
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…
Data-driven Dynamics with Orbital Torus Imaging: A Flexible Model of the Vertical Phase Space of the Galaxy
Adrian M. Price-Whelan, Jason A. S. Hunt, Danny Horta +4
The vertical kinematics of stars near the Sun can be used to measure the total mass distribution near the Galactic disk and to study out-of-equilibrium dynamics. With contemporary…
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…
Orbital Torus Imaging: Acceleration, density, and dark matter in the Galactic disk measured with element abundance gradients
Danny Horta, Adrian M. Price-Whelan, David W. Hogg +5
Under the assumption of a simple and time-invariant gravitational potential, many Galactic dynamics techniques infer the Milky Way's mass and dark matter distribution from stellar…
Dynamics in the satellite system of Triangulum: Is AndXXII a dwarf satellite of M33?
S. C. Chapman, L. Widrow, M. L. M. Collins +10
We present results from a spectroscopic survey of the dwarf spheroidal And XXII and the two extended clusters EC1 and EC2. These three objects are candidate satellites of the Trian…
PAndAS' cubs: discovery of two new dwarf galaxies in the surroundings of the Andromeda and Triangulum galaxies
Nicolas F. Martin, Alan W. McConnachie, Mike Irwin +10
We present the discovery of two new dwarf galaxies, Andromeda XXI and Andromeda XXII, located in the surroundings of the Andromeda and Triangulum galaxies (M31 and M33). These disc…
A Warm-Plus-Hot Dark Matter Universe
R. A. Malaney, G. D. Starkman, L. Widrow
We investigate a new hybrid-model universe containing two types of dark matter, one ``warm'' and the other ``hot''. The hot component is an ordinary light neutrino with mass $\sim…