Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Frederick A. Gent"'
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-12 (2024)
Abstract Dust in the interstellar medium (ISM) is critical to the absorption and intensity of emission profiles used widely in astronomical observations, and necessary for star and planet formation. Supernovae (SNe) both produce and destroy ISM dust.
Externí odkaz:
https://doaj.org/article/54f00938729b4fa3911425602147e46e
Publikováno v:
The Astrophysical Journal, Vol 961, Iss 1, p 7 (2024)
Magnetic fields are now widely recognized as critical at many scales to galactic dynamics and structure, including multiphase pressure balance, dust processing, and star formation. Using imposed magnetic fields cannot reliably model the interstellar
Externí odkaz:
https://doaj.org/article/b38db1d9d2154f6086b1f812dbaff8fc
Publikováno v:
The Astrophysical Journal, Vol 943, Iss 2, p 176 (2023)
Magnetic fields grow quickly, even at early cosmological times, suggesting the action of a small-scale dynamo (SSD) in the interstellar medium (ISM) of galaxies. Many studies have focused on idealized, isotropic, homogeneous, turbulent driving of the
Externí odkaz:
https://doaj.org/article/35cd43174c394e2498d3c6174d74894d
Magnetic fields on small scales are ubiquitous in the universe. Though they can often be observed in detail, their generation mechanisms are not fully understood. One possibility is the so-called small-scale dynamo (SSD). Prevailing numerical evidenc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ca8964b54f3c28e7f4f1510e6827be18
http://arxiv.org/abs/2306.03991
http://arxiv.org/abs/2306.03991
Autor:
James F. Hollins, Graeme R. Sarson, Cetin Can Evirgen, Anvar Shukurov, Andrew Fletcher, Frederick A. Gent
Publikováno v:
Geophysical & Astrophysical Fluid Dynamics. 116:261-289
We apply Gaussian smoothing to obtain mean magnetic field, density, velocity, and magnetic and kinetic energy densities from our numerical model of the interstellar medium, based on three-dimensional magnetohydrodynamic equations in a shearing box $1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2cce7c45df6a3e04e2db0ff93b950451
https://doi.org/10.1080/03091929.2022.2032022
https://doi.org/10.1080/03091929.2022.2032022
Autor:
Simo Tuomisto, Jörn Warnecke, Matthias Rheinhardt, Maarit J. Käpylä, Frederick A. Gent, Mariangela Viviani
The role of turbulent effects for dynamos in the Sun and stars continues to be debated. Mean-field (MF) theory provides a broadly used framework to connect these effects to fundamental magnetohydrodynamics. While inaccessible observationally, turbule
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4822ff9007e57cc4f90611c334127578
https://aaltodoc.aalto.fi/handle/123456789/110767
https://aaltodoc.aalto.fi/handle/123456789/110767
Autor:
Frederick A. Gent, James F. Hollins, Maarit J. Käpylä, Mordecai-Mark Mac Low, Graeme R. Sarson
Publikováno v:
Geophysical & Astrophysical Fluid Dynamics. 114:77-105
High Mach number shocks are ubiquitous in interstellar turbulence. The Pencil Code is particularly well suited to the study of magnetohydrodynamics in weakly compressible turbulence and the numerical investigation of dynamos because of its high-order
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cc4d2636ef1155caa1c1b0127048ca0e
https://doi.org/10.1080/03091929.2019.1634705
https://doi.org/10.1080/03091929.2019.1634705
Publikováno v:
The Astrophysical Journal Letters
Magnetic fields grow quickly even at early cosmological times, suggesting the action of a small-scale dynamo (SSD) in the interstellar medium of galaxies. Many studies have focused on idealized turbulent driving of the SSD. Here we simulate more real
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e046918c78d00fa353f75e9ec1282470
https://aaltodoc.aalto.fi/handle/123456789/106870
https://aaltodoc.aalto.fi/handle/123456789/106870
Publikováno v:
Monthly Notices of the Royal Astronomical Society
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=r3c4b2081b22::ff8e7f02caaeac7cf15b3e2bc17fb612
Publikováno v:
ASTRONOMISCHE NACHRICHTEN. 338(8):885-895
The Sun, aside from its eleven year sunspot cycle is additionally subject to long term variation in its activity. In this work we analyse a solar-like convective dynamo simulation, containing approximately 60 magnetic cycles, exhibiting equatorward p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e88c2f2936bd287e9b6fdced6c9c194e
https://doi.org/10.1002/asna.201713406
https://doi.org/10.1002/asna.201713406