192 citations · 959 across the 16 of their papers we have counts for
16 papers
The linear response of stellar systems does not diverge at marginal stability
Chris Hamilton, Tobias Heinemann
The linear response of a stellar system's gravitational potential to a perturbing mass comprises two distinct contributions. Most famously, the system will respond by forming a pol…
Noise and waves: a unified kinetic theory for stellar systems
Chris Hamilton, Tobias Heinemann
The traditional Chandrasekhar picture of the slow relaxation of stellar systems assumes that stars' orbits are only modified by occasional, uncorrelated, two-body flyby encounters…
The Pencil Code, a modular MPI code for partial differential equations and particles: multipurpose and multiuser-maintained
A. Brandenburg, A. Johansen, P. A. Bourdin +34
The Pencil Code is a highly modular physics-oriented simulation code that can be adapted to a wide range of applications. It is primarily designed to solve partial differential equ…
Orbital stability in static axisymmetric fields
Gopakumar Mohandas, Tobias Heinemann, Martin E. Pessah
We investigate the stability of test-particle equilibrium orbits in axisymmetric, but otherwise arbitrary, gravitational and electromagnetic fields. We extend previous studies of t…
Orbital advection with magnetohydrodynamics and vector potential
Wladimir Lyra, Colin P. McNally, Tobias Heinemann +1
Orbital advection is a significant bottleneck in disk simulations, and a particularly tricky one when used in connection with magnetohydrodynamics. We have developed an orbital adv…
Linear Instabilities Driven by Differential Rotation in Very Weakly Magnetized Plasmas
Eliot Quataert, Tobias Heinemann, Anatoly Spitkovsky
We study the linear stability of weakly magnetized differentially rotating plasmas in both collisionless kinetic theory and Braginskii's theory of collisional, magnetized plasmas.…