Zobrazeno 1 - 10
of 171
pro vyhledávání: '"Thomas Wiegelmann"'
Publikováno v:
The Astrophysical Journal Letters, Vol 947, Iss 1, p L2 (2023)
Two major mechanisms have been proposed to drive the solar eruptions: the ideal magnetohydrodynamic instability and the resistive magnetic reconnection. Due to the close coupling and synchronicity of the two mechanisms, it is difficult to identify th
Externí odkaz:
https://doaj.org/article/6ea979b052304b3e8a050ba42dfb75d4
Autor:
Thomas Wiegelmann, Takashi Sakurai
Publikováno v:
Living Reviews in Solar Physics, Vol 9, p 5 (2012)
The structure and dynamics of the solar corona is dominated by the magnetic field. In most areas in the corona magnetic forces are so dominant that all non-magnetic forces like plasma pressure gradient and gravity can be neglected in the lowest order
Externí odkaz:
https://doaj.org/article/65b7ca06c78a48ceac0f18a4bceb451e
As the coronal dynamics is dominated by magnetic forces, the reconstruction of the coronal magnetic field is of major importance when studying the solar corona. Since coronal field measurements are not routinely available, photospheric fields are ext
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c993b1c2eee7d7eaea7a1c19a0dde7fd
https://doi.org/10.5194/egusphere-egu23-17168
https://doi.org/10.5194/egusphere-egu23-17168
Optimal database design for the storage of financial information relating to real estate investments
Publikováno v:
Journal of Property Investment & Finance, 2016, Vol. 34, Issue 5, pp. 535-546.
Externí odkaz:
http://www.emeraldinsight.com/doi/10.1108/JPIF-05-2016-0029
Publikováno v:
Journal of Property Investment & Finance, 2016, Vol. 34, Issue 5, pp. 432-456.
Externí odkaz:
http://www.emeraldinsight.com/doi/10.1108/JPIF-01-2016-0006
Autor:
Thomas Wiegelmann, Maria S. Madjarska
Publikováno v:
Solar Physics
Deriving the physical parameters of observed phenomena in the solar atmosphere has fundamental importance, as these parameters are then employed to constrain and validate models. Here we report the development of a new computational algorithm based o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bb62b74fbcaa31df2b04270d9ba63228
https://doi.org/10.1007/s11207-022-02094-2
https://doi.org/10.1007/s11207-022-02094-2
Publikováno v:
Solar Physics
Coronal magnetic field extrapolations are necessary to understand the magnetic field morphology of the source region in solar coronal transients. The extrapolation models are broadly classified into nonforce-free and force-free, depending on whether
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::37294a8674342b9ae0c4f500c280f935
https://doi.org/10.1007/s11207-022-02016-2
https://doi.org/10.1007/s11207-022-02016-2
Autor:
Argyrios Koumtzis, Thomas Wiegelmann
Publikováno v:
Solar Physics
The solar magnetic field dominates and structures thecoronal plasma and detailed insights are important to understand almostall physical processes. While direct routine measurementsof the coronal magnetic field are not available, we have to extrapola
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5bb3ca262d2531e0f65f375bc5126956
https://doi.org/10.5194/egusphere-egu22-11960
https://doi.org/10.5194/egusphere-egu22-11960
The magnetohydrostatic (MHS) extrapolation is developed to model the three-dimensional magnetic fields and plasma of the solar atmosphere with the measured vector magnetogram used as boundary condition. It differs from the nonlinear force-free field
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a785fdc3311607efedbf85850c37deeb
https://doi.org/10.5194/egusphere-egu22-3304
https://doi.org/10.5194/egusphere-egu22-3304
Autor:
Thomas Wiegelmann, Maria Madjarska
The solar magnetic field is measured routinely onlyin the solar photosphere. While reliable measurementsof the photospheric magnetic field vector are only availablein active regions, in the quiet Sun at present only the vertical component of the magn
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::23825e7be390768be3179941b7dd5de1
https://doi.org/10.5194/egusphere-egu22-1496
https://doi.org/10.5194/egusphere-egu22-1496