118 citations · 845 across the 40 of their papers we have counts for
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How negative feedback and the ambient environment limit the influence of recombination in common envelope evolution
Luke Chamandy, Jonathan Carroll-Nellenback, Eric G. Blackman +5
We perform 3D hydrodynamical simulations to study recombination and ionization during the common envelope (CE) phase of binary evolution, and develop techniques to track the ionic…
Jets from main sequence and white dwarf companions during common envelope evolution
Yangyuxin Zou, Luke Chamandy, Jonathan Carroll-Nellenback +2
It has long been speculated that jet feedback from accretion onto the companion during a common envelope (CE) event could affect the orbital evolution and envelope unbinding proces…
The Formation of Discs in the Interior of AGB Stars from the Tidal Disruption of Planets and Brown Dwarfs
Gabriel Guidarelli, Jason Nordhaus, Jonathan Carroll-Nellenback +3
A significant fraction of isolated white dwarfs host magnetic fields in excess of a MegaGauss. Observations suggest that these fields originate in interacting binary systems where…
Common Envelope Evolution on the Asymptotic Giant Branch: Unbinding within a Decade?
Luke Chamandy, Eric G. Blackman, Adam Frank +2
Common envelope (CE) evolution is a critical but still poorly understood progenitor phase of many high-energy astrophysical phenomena. Although 3D global hydrodynamic CE simulation…
Bipolar Planetary Nebulae from Outflow Collimation by Common Envelope Evolution
Yangyuxin Zou, Adam Frank, Zhuo Chen +8
The morphology of bipolar planetary nebulae (PNe) can be attributed to interactions between a fast wind from the central engine and dense toroidal shaped ejecta left over from comm…
A 3D radiation-hydrodynamic AGB binary model
Zhuo Chen, Natalia Ivanova, Jonathan Carroll-Nellenback
The origin of chemically peculiar stars and non-zero eccentricity in evolved close binaries have been long-standing problems in binary stellar evolution. Answers to these questions…
How Drag Force Evolves in Global Common Envelope Simulations
Luke Chamandy, Eric G. Blackman, Adam Frank +3
We compute the forces, torque and rate of work on the companion-core binary due to drag in global simulations of common envelope (CE) evolution for three different companion masses…
Hydrodynamic Simulations of Disrupted Planetary Accretion Discs Inside the Core of an AGB Star
Gabriel Guidarelli, Jason Nordhaus, Luke Chamandy +5
Volume complete sky surveys provide evidence for a binary origin for the formation of isolated white dwarfs with magnetic fields in excess of a MegaGauss. Interestingly, not a sing…
Energy Budget and Core-Envelope Motion in Common Envelope Evolution
Luke Chamandy, Yisheng Tu, Eric G. Blackman +4
We analyze a 3D hydrodynamic simulation of common envelope evolution to understand how energy is transferred between various forms and whether theory and simulation are mutually co…
Accretion in Common Envelope Evolution
Luke Chamandy, Adam Frank, Eric G. Blackman +6
Common envelope evolution (CEE) occurs in some binary systems involving asymptotic giant branch (AGB) or red giant branch (RGB) stars, and understanding this process is crucial for…
Accretion in common envelope evolution
Luke Chamandy, Adam Frank, Eric G. Blackman +6
Common envelope evolution (CEE) is presently a poorly understood, yet critical, process in binary stellar evolution. Characterizing the full 3D dynamics of CEE is difficult in part…
Wind-accelerated orbital evolution in binary systems with giant stars
Zhuo Chen, Eric G. Blackman, Jason Nordhaus +2
Using 3D radiation-hydrodynamic simulations and analytic theory, we study the orbital evolution of asymptotic-giant-branch (AGB) binary systems for various initial orbital separati…
Mass Transfer and Disc Formation in AGB Binary Systems
Zhuo Chen, Adam Frank, Eric G. Blackman +2
We investigate mass transfer and the formation of disc in binary systems using a combination of numerical simulations and theory. We consider six models distinguished by binary sep…
Mass transfer in asymptotic-giant-branch binary systems
Z. Chen, A. Frank, E. G. Blackman +2
Binary stars can interact via mass transfer when one member (the primary) ascends onto a giant branch. The amount of gas ejected by the binary and the amount of gas accreted by the…
The Formation and Evolution of Wind-Capture Disks In Binary Systems
Martin Huarte-Espinosa, Jonathan Carroll-Nellenback, Jason Nordhaus +2
We study the formation, evolution and physical properties of accretion disks formed via wind capture in binary systems. Using the AMR code AstroBEAR, we have carried out high resol…
Efficient Parallelization for AMR MHD Multiphysics Calculations; Implementation in AstroBEAR
Jonathan J. Carroll-Nellenback, Brandon Shroyer, Adam Frank +1
Current Adaptive Mesh Refinement (AMR) simulations require algorithms that are highly parallelized and manage memory efficiently. As compute engines grow larger, AMR simulations wi…