Zobrazeno 1 - 10
of 19
pro vyhledávání: '"V. H. HANSTEEN"'
Publikováno v:
The Astrophysical Journal, Vol 946, Iss 2, p 115 (2023)
Our understanding of magnetic reconnection (MR) under chromospheric conditions remains limited. Recent observations have demonstrated the important role of ion–neutral interactions in the dynamics of the chromosphere. Furthermore, the comparison be
Externí odkaz:
https://doaj.org/article/848e70d25ab044b4adbe6fa2271449e8
Our understanding of magnetic reconnection (MR) under chromospheric conditions remains limited. Recent observations have demonstrated the important role of ion–neutral interactions in the dynamics of the chromosphere. Furthermore, the comparison be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::62602f7a0c46a7c4113d556eefa215b2
http://arxiv.org/abs/2211.02157
http://arxiv.org/abs/2211.02157
Publikováno v:
The Astrophysical Journal. 933:205
This work aims to provide an accurate description and calculations of collision frequencies in conditions relevant to the solar atmosphere. To do so, we focus on the detailed description of the collision frequency in the solar atmosphere based on a c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::beeda25d5be03efcb97762dbdc6a1169
https://doi.org/10.3847/1538-4357/ac6e62
https://doi.org/10.3847/1538-4357/ac6e62
Publikováno v:
The Astrophysical Journal. 666:1277-1283
We present the results of numerical simulations of shock wave-driven jets in the solar atmosphere. The dependence of observable quantities like maximum velocity and deceleration on parameters such as the period and amplitude of initial disturbances a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4000c5f033149d6ece5d442c1c6f1e6c
https://doi.org/10.1086/518828
https://doi.org/10.1086/518828
Publikováno v:
The Astrophysical Journal. 660:L169-L172
We present high spatial and high temporal resolution observations of the quiet Sun in H-alpha obtained with the Swedish 1-m Solar Telescope on La Palma. We observe that many mottles, jet-like features in the quiet Sun, display clear up- and downward
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f00634a767d67657431e905dbcbb7419
https://doi.org/10.1086/518246
https://doi.org/10.1086/518246
Autor:
Boris V. Gudiksen, R. Collet, R. Trampedach, Wolfgang Hayek, Martin Asplund, Jorrit Leenaarts, V. H. Hansteen, M. Carlsson
Aims. We present the implementation of a radiative transfer solver with coherent scattering in the new BIFROST code for radiative magneto-hydrodynamical (MHD) simulations of stellar surface convection. The code is fully parallelized using MPI domain
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a2ad36649fc7f9c114ecbc5e6687f53
https://dspace.library.uu.nl/handle/1874/202786
https://dspace.library.uu.nl/handle/1874/202786
Publikováno v:
AIP Conference Proceedings.
The interaction between protons and minor ions in the chromosphere‐corona transition region produces an upward force on the minor ions and an enhanced coronal abundance. In this presentation we compare a “classical” hydrodynamical model of a hy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::64a19271bf9edca1a3b346517ee350c2
https://doi.org/10.1063/1.1618671
https://doi.org/10.1063/1.1618671
Publikováno v:
AIP Conference Proceedings.
We have modelled the solar wind response to a time‐dependent energy input in the corona. The model, which extends from the upper chromosphere to 1 AU, solves the time‐dependent transport equations based on the gyrotropic approximation to the 16
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::179d9b4bc0f9b2bf65e206396211959d
https://doi.org/10.1063/1.1618598
https://doi.org/10.1063/1.1618598
Autor:
E. Leer, V. H. Hansteen
Publikováno v:
Highlights of Astronomy ISBN: 9780792355564
The last few years have seen the development of solar wind models characterized by high coronal proton temperatures, low electron temperatures and low densities in the inner corona. In addition the emphasis on “additional” acceleration via Alfven
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::db88ded3e2eead9bab48e8305cba083d
https://doi.org/10.1007/978-94-011-4778-1_68
https://doi.org/10.1007/978-94-011-4778-1_68