Now showing items 1-10 of 68
Model calculations of the dayside ionosphere of Venus
(Elsevier, 1981)
Model calculations of the dayside ionosphere of Venus are presented. The coupled continuity and momentum equations were solved for O2+, O+, CO2+, C+, N+, He+, and H+ density distributions, which are compared with measurements ...
The behavior of the high-latitude F-region neutral thermosphere in relation to IMF parameters
(Elsevier, 1992)
Ground based incoherent scatter radar (ISR) and Fabry Perot interferometer (FPI) studies in the northern high latitudes during the period 1983 to 1989 have shown that the F-region neutral wind field pattern depends upon ...
The abundance of atomic 1 H, 4 He and 3 He in the local interstellar cloud from pickup ion observations with SWICS on Ulysses
(Kluwer Academic Publishers; Springer Science+Business Media, 1996-10)
Pickup ions measured deep inside the heliosphere open a new way to determine the absolute atomic density of a number of elements and isotopes in the local interstellar cloud (LIC). We derive the atomic abundance of hydrogen ...
Satellite observations of new particle and field signatures associated with SAR arc field lines at magnetospheric heights
(Elsevier, 1987)
Enhancements in thermal ion densities, an oxygen dominated ring current at energies below 17 kev, and invariant latitude-limited bands of intense ELF hiss have been discovered on Stable Auroral Red (SAR) arc field lines ...
Coupled Clouds and Chemistry of the Giant Planets— A Case for Multiprobes
(Kluwer Academic Publishers; Springer Science + Business Media, Inc., 2005-01)
In seeking to understand the formation of the giant planets and the origin of their atmospheres, the heavy element abundance in well-mixed atmosphere is key. However, clouds come in the way. Thus, composition and condensation ...
The effect of the hot, anisotropic magnetospheric protons on the dispersion relation
(Elsevier, 1993-04)
It is shown that the presence of hot, anisotropic protons of ring current in outer plasmasphere lead to the modification of the dispersion of A- and FMS-waves in the low frequency region. In this case, a periodic instability ...
A Parallel Adaptive 3D MHD Scheme for Modeling Coronal and Solar Wind Plasma Flows
(Kluwer Academic Publishers; Springer Science+Business Media, 1999-03)
A parallel adaptive mesh refinement (AMR) scheme is described for solving the governing equations of ideal magnetohydrodynamics (MHD) in three space dimensions. This solution algorithm makes use of modern finite-volume ...
Combined first and second order Fermi acceleration at comets
(Elsevier, 1989)
Our two-dimensional, time-dependent model calculations indicate that an interplay between velocity and spatial diffusion may be responsible for the acceleration of implanted heavy ions in the cometary preshock region. ...
Isotopic Composition of H, HE and NE in the Protosolar Cloud
(Kluwer Academic Publishers; Springer Science+Business Media, 2003-03)
Observations and measurements in the solar wind, the Jovian atmosphere and the gases trapped in lunar surface material provide the main evidence from which the isotopic composition of H, He and Ne in the Protosolar Cloud ...