Buscar
Mostrando ítems 1-10 de 105
Long-term solar activity influences on South American rivers
(Elsevier, 2011-02)
River streamflows are excellent climatic indicators since they integrate precipitation over large areas. Here we follow up on our previous study of the influence of solar activity on the flow of the Parana River, in ...
A remnant planetary core in the hot-Neptune desert
(Nature Publishing Group, 2020-07)
The interiors of giant planets remain poorly understood. Even for the planets in the Solar System, difficulties in observation lead to major uncertainties in the properties of planetary cores. Exoplanets that have undergone ...
Polarization in Disks
(American Astronomical Society, 2019)
This white paper discusses how disk polarization observations can be used to study disk and grain properties during the planet formation process. Such studies require very sensitive and high resolution multi-wavelength ...
Ion acoustic damping effects on parametric decays of Alfvén waves
(Blackwell Publishing Ltd, 2000)
It is well known that in plasmas with β = (νs/νA)2 < 1 (νs is the ion acoustic velocity and νA is the Alfvén velocity), Alfvén waves propagating along an external magnetic field can have three kinds of parametric ...
Electromagnetic instabilities in a gyrotropic and nongyrotropic hybrid solar-wind-like plasma
(Blackwell Publishing Ltd, 1998)
We study the stability of electromagnetic waves for nongyrotropic velocity distribution functions in a solar-wind-like plasma. The dispersion relation is solved numerically in closed form. On the basis of recently reported ...
KELT-17: a chemically peculiar Am star and a hot-Jupiter planet
(EDP Sciences, 2020-07)
Context. The detection of planets orbiting chemically peculiar stars is very scarcely known in the literature. Aims. To determine the detailed chemical composition of the remarkable planet host star KELT-17. This object ...