Zobrazeno 1 - 10
of 931
pro vyhledávání: '"P Andrassy"'
Autor:
Vetter, M., Roepke, F. K., Schneider, F. R. N., Pakmor, R., Ohlmann, S. T., Lau, M. Y. M., Andrassy, R.
Three-dimensional simulations usually fail to cover the entire dynamical common-envelope phase of gravitational wave progenitor systems due to the vast range of spatial and temporal scales involved. We investigated the common-envelope interactions of
Externí odkaz:
http://arxiv.org/abs/2410.07841
Autor:
Pakmor, Rüdiger, Pelisoli, Ingrid, Justham, Stephen, Rajamuthukumar, Abinaya S., Röpke, Friedrich K., Schneider, Fabian R. N., de Mink, Selma E., Ohlmann, Sebastian T., Podsiadlowski, Philipp, Fraile, Javier Moran, Vetter, Marco, Andrassy, Robert
Publikováno v:
A&A 691, A179 (2024)
Stellar mergers are one important path to highly magnetised stars. Mergers of two low-mass white dwarfs may create up to every third hot subdwarf star. The merging process is usually assumed to dramatically amplify magnetic fields. However, so far on
Externí odkaz:
http://arxiv.org/abs/2407.02566
Performance of high-order Godunov-type methods in simulations of astrophysical low Mach number flows
Publikováno v:
A&A 686, A34 (2024)
High-order Godunov methods for gas dynamics have become a standard tool for simulating different classes of astrophysical flows. Their accuracy is mostly determined by the spatial interpolant used to reconstruct the pair of Riemann states at cell int
Externí odkaz:
http://arxiv.org/abs/2402.16706
Convection is one of the most important mixing processes in stellar interiors. Hydrodynamic mass entrainment can bring fresh fuel from neighboring stable layers into a convection zone, modifying the structure and evolution of the star. Under some con
Externí odkaz:
http://arxiv.org/abs/2309.17225
There is strong observational evidence that the convective cores of intermediate-mass and massive main sequence stars are substantially larger than those predicted by standard stellar-evolution models. However, it is unclear what physical processes c
Externí odkaz:
http://arxiv.org/abs/2307.04068
Autor:
Herwig, Falk, Woodward, Paul R., Mao, Huaqing, Thompson, William R., Denissenkov, Pavel, Lau, Josh, Blouin, Simon, Andrassy, Robert, Paul, Adam
We performed 3D hydrodynamic simulations of the inner $\approx 50\%$ radial extent of a $25\ \mathrm{M_\odot}$ star in the early phase of the main sequence and investigate core convection and internal gravity waves in the core-envelope boundary regio
Externí odkaz:
http://arxiv.org/abs/2303.05495
Autor:
Radoslav Ivančík, Vladimír Andrassy
Publikováno v:
Entrepreneurship and Sustainability Issues, Vol 11, Iss 4, Pp 31-43 (2024)
The development of human civilization is currently – in the middle of the third decade of the third millennium – highly dynamic, inextricably linked to the development and introduction of new, modern technologies in all spheres or sectors of soci
Externí odkaz:
https://doaj.org/article/8c16df22788c46db9f50fe4abc2495d6
Autor:
Leidi, G., Birke, C., Andrassy, R., Higl, J., Edelmann, P. V. F., Wiest, G., Klingenberg, C., Röpke, F. K.
Publikováno v:
A&A 668, A143 (2022)
Fully compressible magnetohydrodynamic (MHD) simulations are a fundamental tool for investigating the role of dynamo amplification in the generation of magnetic fields in deep convective layers of stars. The flows that arise in such environments are
Externí odkaz:
http://arxiv.org/abs/2210.01641
Autor:
Radoslav Ivančík, Vladimír Andrassy
Publikováno v:
Entrepreneurship and Sustainability Issues, Vol 11, Iss 3, Pp 25-36 (2024)
This study aims to investigate some aspects that contribute to the growing popularity of conspiracy theories in the 21st century. They have gained so much popularity among the public in recent years that an age of conspiracies. Conspiracy theories ar
Externí odkaz:
https://doaj.org/article/3d0ee1202a5f41b2a389846ea4460ef1
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