Zobrazeno 1 - 10
of 1 677
pro vyhledávání: '"Pratt, J A"'
Autor:
Condos, C. A., Pratt, J. R., Manley, J., Agrawal, A. R., Schlamminger, S., Pluchar, C. M., Wilson, D. J.
The pendulum is one of the oldest gravimeters, featuring frequency-based readout limited by geometric nonlinearity. While modern gravimeters focus on displacement-based spring-mass or free-fall designs, the advent of nanofabrication techniques invite
Externí odkaz:
http://arxiv.org/abs/2411.04113
Autor:
Dethero, M. -G., Pratt, J., Vlaykov, D. G., Baraffe, I., Guillet, T., Goffrey, T., Saux, A. Le, Morison, A.
Theoretical descriptions of convective overshooting often rely on a one-dimensional parameterization of the flow called the filling factor for convection. Several definitions of the filling factor have been developed, based on: (1) the percentage of
Externí odkaz:
http://arxiv.org/abs/2409.09815
Measuring gravitational interactions on sub-100-$\mu$m length scales offers a window into physics beyond the Standard Model. However, short-range gravity experiments are limited by the ability to position sufficiently massive objects to within small
Externí odkaz:
http://arxiv.org/abs/2406.13020
Autor:
Saux, A. Le, Baraffe, I., Guillet, T., Vlaykov, D. G., Morison, A., Pratt, J., Constantino, T., Goffrey, T.
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 towards the stellar surface and are suspected to impact physical processe
Externí odkaz:
http://arxiv.org/abs/2304.02508
Autor:
Baraffe, I., Clarke, J., Morison, A., Vlaykov, D. G., Constantino, T., Goffrey, T., Guillet, T., Saux, A. Le, Pratt, J.
We perform two-dimensional numerical simulations of core convection for zero-age-main-sequence stars covering a mass range from 3 $M_\odot$ to 20 $M_\odot$. The simulations are performed with the fully compressible time-implicit code MUSIC. We study
Externí odkaz:
http://arxiv.org/abs/2301.02604
Large-scale magnetic fields thread through the electrically conducting matter of the interplanetary and interstellar medium, stellar interiors, and other astrophysical plasmas, producing anisotropic flows with regions of high-Reynolds-number turbulen
Externí odkaz:
http://arxiv.org/abs/2205.06879
Autor:
Vlaykov, D. G., Baraffe, I., Constantino, T., Goffrey, T., Guillet, T., Saux, A. Le, Morison, A., Pratt, J.
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 of internal gravity waves (IGWs) at convective boundaries. The relatio
Externí odkaz:
http://arxiv.org/abs/2205.04270
Autor:
Saux, A. Le, Guillet, T., Baraffe, I., Vlaykov, D. G., Constantino, T., Pratt, J., Goffrey, T., Sylvain, M., Réville, V., Brun, A. S.
Publikováno v:
A&A 660, A51 (2022)
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 analyse the impact of these artificial modifications on the physical proper
Externí odkaz:
http://arxiv.org/abs/2202.00801
Autor:
Andrassy, R., Higl, J., Mao, H., Mocák, M., Vlaykov, D. G., Arnett, W. D., Baraffe, I., Campbell, S. W., Constantino, T., Edelmann, P. V. F., Goffrey, T., Guillet, T., Herwig, F., Hirschi, R., Horst, L., Leidi, G., Meakin, C., Pratt, J., Rizzuti, F., Roepke, F. K., Woodward, P.
Publikováno v:
A&A 659, A193 (2022)
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 help us understand the dynamics of stellar convection and convective bou
Externí odkaz:
http://arxiv.org/abs/2111.01165
Autor:
Baraffe, I., Pratt, J., Vlaykov, D. G., Guillet, T., Goffrey, T., Saux, A. Le, Constantino, T.
Publikováno v:
A&A 654, A126 (2021)
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 tactic adopted in numerical simulations of convection that use realistic st
Externí odkaz:
http://arxiv.org/abs/2109.00943