Zobrazeno 1 - 10
of 155
pro vyhledávání: '"Moya, Pablo S."'
Context. Magnetic batteries are potential sources that may drive the generation of a seed magnetic field, even if this field is initially zero. These batteries can be the result of non-aligned thermodynamic gradients in a plasma, as well as of specia
Externí odkaz:
http://arxiv.org/abs/2411.13222
Context. The transition from left-hand to right-hand polarized Alfv\'en waves depends on the wavenumber, the ratio of kinetic to magnetic pressure $\beta$, temperature anisotropy, and ion composition of the plasma. Along with the temperature anisotro
Externí odkaz:
http://arxiv.org/abs/2407.04044
Autor:
Echeverría-Veas, Sebastián, Moya, Pablo S., Lazar, Marian, Poedts, Stefaan, Asenjo, Felipe A.
Different in situ satellite observations within 0.3 to 1 AU from the Sun reveal deviations in the thermodynamics of solar wind expansion. Specifically, these deviations challenge the applicability of the double adiabatic or CGL theory, indicating pot
Externí odkaz:
http://arxiv.org/abs/2403.04011
Multi-scale modeling of expanding plasmas is crucial for understanding the dynamics and evolution of various astrophysical plasma systems such as the solar and stellar winds. In this context, the Expanding Box Model (EBM) provides a valuable framewor
Externí odkaz:
http://arxiv.org/abs/2310.02302
Publikováno v:
A&A 686, A26 (2024)
The ponderomotive force is involved in a variety of space plasmas phenomena which are characterized by the family of Kappa distributions. Therefore, evaluating these nonthermal effects in the ponderomotive force is required. The Washimi and Karpman p
Externí odkaz:
http://arxiv.org/abs/2309.11460
Temperature anisotropy and field-aligned skewness are commonly observed non-thermal features in electron velocity distributions in the solar wind. These characteristics can act as a source of free energy to destabilize different electromagnetic wave
Externí odkaz:
http://arxiv.org/abs/2307.13630
Autor:
Gallo-Méndez, Iván, Moya, Pablo S.
In this article, on the basis of the Langevin equation applied to velocity fluctuations, we numerically model the Partial Variance of Increments, which is a useful tool to measure time and spatial correlations in space plasmas. We consider a Coupled
Externí odkaz:
http://arxiv.org/abs/2306.15759
Publikováno v:
A&A 675, A84 (2023)
Context. Spacecraft measurements have shown Kinetic Alfv\'en Waves propagating in the terrestrial magnetosphere at lower wavenormal angles than predicted by linear Vlasov theory of electron-proton plasmas. To explain these observations, it has been s
Externí odkaz:
http://arxiv.org/abs/2306.01880
The Washimi and Karpman ponderomotive interaction due to electromagnetic waves propagation is investigated for unmagnetized plasmas described by a isotropic Kappa distribution. We performed a brief analysis of the influence of the Kappa distribution
Externí odkaz:
http://arxiv.org/abs/2211.10477
The electron firehose instabilities are among the most studied kinetic instabilities, especially in the context of space plasmas, whose dynamics is mainly controlled by collisionless wave-particle interactions. This paper undertakes a comparative ana
Externí odkaz:
http://arxiv.org/abs/2209.00441