Zobrazeno 1 - 10
of 59
pro vyhledávání: '"H. Wiechen"'
Autor:
H. Wiechen
Publikováno v:
Annales Geophysicae, Vol 17, Pp 595-603 (1999)
Magnetic reconnection is a process of fundamental importance for the dynamics of the Earth's plasma sheet. In this context, the development of thin current sheets in the near-Earth plasma sheet is a topic of special interest because they could be
Externí odkaz:
https://doaj.org/article/d66b2ec534aa478f896ae22ec3063ff9
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 339:455-459
The remanent magnetization of meteorite material in the Solar system indicates that magnetic fields of several gauss are present in the protoplanetary disc. It is shown that such relatively strong magnetic fields can be generated in dusty protoplanet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bdbd1db3bc9996fce799771af0c71172
https://doi.org/10.1046/j.1365-8711.2003.06178.x
https://doi.org/10.1046/j.1365-8711.2003.06178.x
Publikováno v:
Physics of Plasmas. 9:4285-4292
Shear-flow induced friction between neutral gas and charged particle components of different mass can yield a significant self-magnetization of matter. In this paper this process is discussed with respect to protoplanetary disk matter consisting of c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4c2740a37314ba10a5862a5155ad776c
https://doi.org/10.1063/1.1507119
https://doi.org/10.1063/1.1507119
Autor:
Guido T. Birk, H. Wiechen
Publikováno v:
Physics of Plasmas. 9:964-970
Shear flow instabilities may play an important role in the dynamics of partially ionized dusty plasmas. Within a multifluid approach the onset criteria with and without electrical resistivity are derived. Long wave length modes can be stabilized by d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::15eaa54d860817304d3053c02e1cf6f8
https://doi.org/10.1063/1.1445424
https://doi.org/10.1063/1.1445424
Autor:
H. Wiechen, Guido T. Birk
Publikováno v:
Physics of Plasmas. 8:5057-5060
Thermal condensation modes in static partially ionized dense dusty plasmas are investigated by linear mode analysis. A necessary and sufficient onset criterion for a coupled dust-neutral gas condensation mode is found with the help of the Hurwitz the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a134831d73a6ca50d16c0f40f683b09d
https://doi.org/10.1063/1.1412471
https://doi.org/10.1063/1.1412471
Publikováno v:
The Astrophysical Journal. 548:249-252
Observations show significant H\alpha-emissions in the Galactic halo near the edges of cold gas clouds of the Magellanic Stream. The source for the ionization of the cold gas is still a widely open question. In our paper we discuss the critical veloc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::072a380474d7e519251ab16e778a0a20
https://doi.org/10.1086/318690
https://doi.org/10.1086/318690
Publikováno v:
Physics of Plasmas. 7:701-705
A self-consistent numerical model of self-generation and amplification of magnetic fields in weakly ionized protogalactic matter is presented. This model is based on three-dimensional two-fluid simulations of the dynamics expected for protogalactic p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e5f1b167b8f207eec213b705a5b9c2d1
https://doi.org/10.1063/1.873855
https://doi.org/10.1063/1.873855
Publikováno v:
The Astrophysical Journal. 518:177-182
Halos of active galaxies can show relatively strong magnetic fields. Observations indicate that such halo fields, which are significantly stronger than one would expect from the disk field strengths, seem to be associated with the dynamical flows and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3267c64a22b873db6d13ea4fb410c774
https://doi.org/10.1086/307273
https://doi.org/10.1086/307273
Publikováno v:
Physics of Plasmas. 5:3732-3736
Astrophysical plasmas typically have to be considered as highly collision-free from a kinetic point of view or highly ideal in a fluid description. This refers to near-Earth space plasmas, like the magnetosphere, or extragalactic objects like radio j
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0fcd629ae29e88b68baad7a027d04b1a
https://doi.org/10.1063/1.872983
https://doi.org/10.1063/1.872983
Autor:
H J Ziegler, H Wiechen
Publikováno v:
Physica Scripta. :50-53
In this paper we derive a necessary criterion for dissipation by mixing in ideal fluids. The experimental test of that criterion is simple and will help to discriminate real dissipation on microscopic scales from mixing relaxation in almost ideal flu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9779111b6ee17556e19768eac3252659
https://doi.org/10.1088/0031-8949/1998/t74/009
https://doi.org/10.1088/0031-8949/1998/t74/009