64 citations · 465 across the 30 of their papers we have counts for
32 papers
The Role of Non-local Thermal Transport in Flare-Driven Chromospheric Evaporation
Thomas Parmenter, Tony Arber, Sergey Belov +1
Thermal conduction plays an important role in energy transport during solar flares. Flares heat the solar atmosphere to tens of MK which, combined with mean free paths in excess of…
Improved Convergence of Carleman-Embedded Quantum Algorithm for the Vlasov-Poisson System
Matthew Christensen, Tom Goffrey, Animesh Datta
We extend the regime of convergence of Carleman-embedded quantum algorithms that solve the Vlasov-Poisson equations from kinetic plasma physics. We establish convergence, using bot…
Unveiling stellar (and planetary) internal dynamics with the fully compressible MUSIC code
Arthur Le Saux, Isabelle Baraffe, Thomas Guillet +8
Multidimensional hydrodynamical simulations have transformed the study of stellar interiors over the past few decades. Most codes developed during that time use the anelastic appro…
Mass dependence of overshooting beneath convective envelopes
J. Pratt, I. Baraffe, M. -G. Dethero +3
Although the dependence of convective core overshooting on mass has attracted much attention, no corresponding work exists for overshooting below a convective envelope. We aim to q…
Thermodynamic Evolution of Flaring Loops with Non-local Thermal Transport
S. Belov, T. Parmenter, T. Arber +3
Hot solar coronal loops, such as flaring loops, reach temperatures where the thermal transport becomes non-local. This occurs when the mean-free-path of electrons can no longer be…
Convective shells in the interior of Cepheid variable stars: overshooting models based on hydrodynamic simulations
Maxime Stuck, Jane Pratt, Isabelle Baraffe +5
Because Cepheid variable stars have long been used as a cosmic benchmark, the accuracy of stellar evolution models for Cepheids have wide-reaching effects. Our goal is to provide a…
Mixing by Internal Gravity Waves in Stars: Assessing Numerical Simulations Against Theory
Jack Morton, Thomas Guillet, Isabelle Baraffe +5
Here we present a study of radial chemical mixing in non-rotating massive main-sequence stars driven by internal gravity waves (IGWs), based on multi-dimensional hydrodynamical sim…
Non-local thermal transport impact on compressive waves in two-temperature coronal loops
S. A. Belov, T. Goffrey, T. D. Arber +1
Context. Observations of slow magnetoacoustic waves in solar coronal loops suggest that, in hot coronal plasma, heat conduction may be suppressed in comparison with the classical t…
Determining Absolute Neutrino Mass using Quantum Technologies
A. A. S. Amad, F. F. Deppisch, M. Fleck +19
Next generation tritium decay experiments to determine the absolute neutrino mass require high-precision measurements of -decay electron energies close to the kinematic end poin…
Solving the Nonlinear Vlasov Equation on a Quantum Computer
Tamás Vaszary, Animesh Datta, Tom Goffrey +1
The practical applicability of a recent Carleman-linearization-based quantum algorithm for solving ordinary differential equations (ODEs) with quadratic nonlinearities is investiga…
The shape of convection in 2D and 3D global simulations of stellar interiors
M. -G. Dethero, J. Pratt, D. G. Vlaykov +5
Theoretical descriptions of convective overshooting often rely on a one-dimensional parameterization of the flow called the filling factor for convection. Several definitions of th…
Effects of stratification on overshooting and waves atop the convective core of main-sequence stars
Adrien Morison, Arthur Le Saux, Isabelle Baraffe +5
As a massive star evolves along the main sequence, its core contracts, leaving behind a stable stratification in helium. We simulate 2D convection in the core at three different st…
Two-dimensional simulations of internal gravity waves in a 5 Zero-Age-Main-Sequence model
A. Le Saux, I. Baraffe, T. Guillet +5
Main-sequence intermediate-mass stars present a radiative envelope that supports internal gravity waves (IGWs). Excited at the boundary with the convective core, IGWs propagate tow…
A study of convective core overshooting as a function of stellar mass based on two-dimensional hydrodynamical simulations
I. Baraffe, J. Clarke, A. Morison +6
We perform two-dimensional numerical simulations of core convection for zero-age-main-sequence stars covering a mass range from 3 to 20 . The simulations are per…
Impact of radial truncation on global 2D hydrodynamic simulations for a Sun-like model
D. G. Vlaykov, I. Baraffe, T. Constantino +5
Stellar convection is a non-local process responsible for the transport of heat and chemical species. It can lead to enhanced mixing through convective overshooting and excitation…
Two-dimensional simulations of solar-like models with artificially enhanced luminosity. II. Impact on internal gravity waves
A. Le Saux, T. Guillet, I. Baraffe +7
Artificially increasing the luminosity and the thermal diffusivity of a model is a common tactic adopted in hydrodynamical simulations of stellar convection. In this work, we analy…
Local heating due to convective overshooting and the solar modelling problem
Baraffe I, Constantino T, Clarke J +5
Recent hydrodynamical simulations of convection in a solar-like model suggest that penetrative convective flows at the boundary of the convective envelope modify the thermal backgr…
Dynamics in a stellar convective layer and at its boundary: Comparison of five 3D hydrodynamics codes
R. Andrassy, J. Higl, H. Mao +18
Our ability to predict the structure and evolution of stars is in part limited by complex, 3D hydrodynamic processes such as convective boundary mixing. Hydrodynamic simulations he…
Two-dimensional simulations of solar-like models with artificially enhanced luminosity -- I. Impact on convective penetration
I. Baraffe, J. Pratt, D. G. Vlaykov +4
We perform 2D, fully compressible, time-implicit simulations of convection in a solar-like model with the MUSIC code. Our main motivation is to explore the impact of a common tacti…
Suppression of lithium depletion in young low-mass stars from fast rotation
Thomas Constantino, Isabelle Baraffe, Thomas Goffrey +4
We compute rotating 1D stellar evolution models that include a modified temperature gradient in convection zones and criterion for convective instability inspired by rotating 3D hy…
Inflationary stimulated Raman scattering in shock-ignition plasmas
SJ Spencer, Alexander Seaton, Tom Goffrey +1
In the shock-ignition inertial confinement fusion scheme, high-intensity lasers propagate through an inhomogeneous coronal plasma, driving a shock designed to cause fuel ignition.…
Unveiling the magnetic nature of chromospheric vortices
Mariarita Murabito, Juie Shetye, Marco Stangalini +5
Vortex structures in the Sun's chromosphere are believed to channel energy between different layers of the solar atmosphere. We investigate the nature and dynamics of two small-sca…
Comparison of two- and three-dimensional compressible convection in a pre-main sequence star
J. Pratt, I. Baraffe, T. Goffrey +4
Extending our recent studies of two-dimensional stellar convection to 3D, we compare three-dimensional hydrodynamic simulations to identically set-up two-dimensional simulations, f…
The Acceleration of Superrotation in Simulated Hot Jupiter Atmospheres
Florian Debras, Nathan Mayne, Isabelle Baraffe +5
Context. Atmospheric superrotating flows at the equator are an almost ubiquitous result of simulations of hot Jupiters, and a theory explaining how this zonally coherent flow reach…