116 citations · 249 across the 9 of their papers we have counts for
9 papers
A consistent hierarchy of generalized kinetic equation approximations to the chemical master equation applied to surface catalysis
Gregory Herschlag, Sorin Mitran, Guang Lin
We develop a hierarchy of approximations to the master equation for systems that exhibit translational invariance and finite-range spatial correlation. Each approximation within th…
Magnetic Nested-wind Scenarios for Bipolar Outflows: Pre-planetary and YSO nebular shaping
Timothy J. Dennis, Adam Frank, Eric G. Blackman +3
We present results of a series of magnetohydrodynamic (MHD) and hydro- dynamic (HD) 2.5D simulations of the morphology of outflows driven by nested wide-angle winds - i.e. winds wh…
Hypersonic Buckshot: Astrophysical Jets as Heterogeneous Collimated Plasmoids
Kristopher Yirak, Adam Frank, Andrew J. Cunningham +1
Herbig-Haro (HH) jets are commonly thought of as homogeneous beams of plasma traveling at hypersonic velocities. Structure within jet beams is often attributed to periodic or ``pul…
Simulating Magnetohydrodynamical Flow with Constrained Transport and Adaptive Mesh Refinement; Algorithms & Tests of the AstroBEAR Code
Andrew J. Cunningham, Adam Frank, Peggy Varniere +2
A description is given of the algorithms implemented in the AstroBEAR adaptive mesh refinement code for ideal magnetohydrodynamics. The code provides several high resolution, shock…
PPN as Explosions: Bullets vs Jets and Nebular Shaping
Timothy J. Dennis, Andrew J. Cunningham, Adam Frank +3
Many proto-planetary nebulae (PPN) appear as narrow collimated structures sometimes showing multiple, roughly aligned lobes. In addition, many PPN flows have been shown to have sho…
The Interaction Between a Pulsed Astrophysical Jet and Small-Scale Heterogeneous Media
Kristopher Yirak, Adam Frank, Andrew Cunningham +1
We have performed 2D hydrodynamic simulations of a pulsed astrophysical jet propagating through a medium that is populated with spherical inhomogeneities, or "clumps," which are sm…