Zobrazeno 1 - 10
of 75
pro vyhledávání: '"Lazăr, Marian"'
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
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
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
Publikováno v:
A&A 663, A67 (2022)
Given their uniqueness, the Ulysses data can still provide us with valuable new clues about the properties of plasma populations in the solar wind, and, especially, about their variations with heliographic coordinates. We revisit the electron data re
Externí odkaz:
http://arxiv.org/abs/2205.05911
Recent studies have outlined the interest for the evaluation of transport coefficients in space plasmas, where the observed velocity distributions of plasma particles are conditioned not only by the binary collisions, e.g., at low energies, but also
Externí odkaz:
http://arxiv.org/abs/2201.05157
Publikováno v:
A&A 654, A99 (2021)
In heliospheric plasmas the transport of energy and particles is governed by various fluxes (e.g., heat flux) triggered by different forces, electromagnetic fields, and gradients in density or temperature. In the outer corona and at relatively low he
Externí odkaz:
http://arxiv.org/abs/2108.11614
Kappa distributions are ubiquitous in space and astrophysical poorly collisional plasmas, such as the solar wind, suggesting that microscopic and macroscopic properties of these non-equilibrium plasmas are highly conditioned by the wave-particle inte
Externí odkaz:
http://arxiv.org/abs/2011.09108
Observations in space plasmas reveal particle velocity distributions out of thermal equilibrium, with anisotropies (e.g., parallel drifts or/and different temperatures, $T_\parallel$ - parallel and $T_\perp$ - perpendicular, with respect to the backg
Externí odkaz:
http://arxiv.org/abs/2011.08576
In the literature different so-called $\kappa$-distribution functions are discussed to fit and model the velocity (or energy) distributions of solar wind species, pickup ions or magnetospheric particles. Here we introduce a generalized (isotropic) $\
Externí odkaz:
http://arxiv.org/abs/2007.03945