Zobrazeno 1 - 10
of 51
pro vyhledávání: '"G. T. Birk"'
Publikováno v:
Astronomy & Astrophysics. 415:791-802
The formation and dynamical evolution of cometary plasma tails and magnetic boundary layers is studied by the first numerical plasma-neutral gas simulations. It is shown that collisional interaction between the cometary neutral envelope and the solar
Publikováno v:
Astrophysics and Space Science. 289:391-394
HI observations of high-velocity clouds (HVCs) indicate that they are interacting with their ambient medium. The question on the dynamical and thermal stabilization of a cold dense neutral cloud in a hot, thin, and magnetized ambient halo plasma is i
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
Publikováno v:
Journal of Plasma Physics. 66:213-222
The self-magnetisation of circumstellar disks is considered within an appropriate multifluid description. These disks are composed of ionised and neutral gas as well as of a charged dust component. The most important equation in this context is the g
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
Publikováno v:
The Astrophysical Journal. 535:706-711
We report results of the most extensive and accurate monitoring yet undertaken for a supernova population in a starburst galaxy. The number of sources being monitored in M82's starburst nuclear region has been increased to 24, all of which now have d
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
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
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
Publikováno v:
Computer Physics Communications. 112:7-22
The highly involved macroscopic low-frequency dynamics of partially ionized dusty plasmas can be studied by means of computational fluid simulations. We derived a general set of numerically tractable balance equations taking into account mass, moment