2.3k citations · 7.1k across the 80 of their papers we have counts for
80 papers
Measuring the dynamical length of galactic bars
Michael S. Petersen, Martin D. Weinberg, Neal Katz
We define a physically-motivated measure for galactic bar length, called the dynamical length. The dynamical length of the bar corresponds to the radial extent of the orbits that a…
A Comprehensive Perturbative Formalism for Phase Mixing in Perturbed Disks. II. Phase Spirals in an Inhomogeneous Disk Galaxy with a Non-responsive Dark Matter Halo
Uddipan Banik, Frank C. van den Bosch, Martin D. Weinberg
We develop a linear perturbative formalism to compute the response of an inhomogeneous stellar disk embedded in a non-responsive dark matter halo to perturbations like bars, spiral…
The Non-Axisymmetric Influence: Radius and Angle-Dependent Trends in a Barred Galaxy
Carrie Filion, Rachel L. McClure, Martin D. Weinberg +2
Many disc galaxies host galactic bars, which exert time-dependent, non-axisymmetric forces that can alter the orbits of stars. There should be both angle and radius-dependence in t…
Dynamical Data Mining Captures Disc-Halo Couplings that Structure Galaxies
Alexander Johnson, Michael S. Petersen, Kathryn V. Johnston +1
Studying coupling between different galactic components is a challenging problem in galactic dynamics. Using basis function expansions (BFEs) and multichannel singular spectrum ana…
New dipole instabilities in spherical stellar systems
Martin D. Weinberg
Spherical stellar systems have weakly-damped response modes. The dipole modes are seiche modes. The quadrupole are zero pattern-speed prolate modes, the stable precursors to the ra…
A Comprehensive Perturbative Formalism for Phase-Mixing in Perturbed Disks. I. Phase spirals in an Infinite, Isothermal Slab
Uddipan Banik, Martin D. Weinberg, Frank C. van den Bosch
Galactic disks are highly responsive systems that often undergo external perturbations and subsequent collisionless equilibration, predominantly via phase-mixing. We use linear per…