40 citations · 264 across the 19 of their papers we have counts for
19 papers
Hybrid simulations of the proton beam instabilities in the young solar wind. The formation of hammerhead-like distributions
R. A. López, Shaaban M. Shaaban, M. Lazar +4
Parker Solar Probe (PSP) observations in the young solar wind reveal new properties of both plasma particle velocity distributions (VDs) and associated electromagnetic (EM) wave fl…
Extended scenarios for solar radio emissions with downshifted electron beam plasma excitations
M. Lazar, R. A. López, S. M. Shaaban +2
First-principle studies of radiative processes aimed at explaining the origin of type II and type III solar radio bursts raise questions on the implications of downshifted electron…
Numerical simulations of temperature anisotropy instabilities stimulated by suprathermal protons
S. M. Shaaban, R. A. Lopez, M. Lazar +1
The new in situ measurements of the Solar Orbiter mission contribute to the knowledge of the suprathermal populations in the solar wind, especially of ions and protons whose charac…
Decoding the formation of hammerhead ion populations observed by Parker Solar Probe
Shaaban M. Shaaban, M. Lazar, R. A. López +2
In situ observations by the Parker Solar Probe (PSP) have revealed new properties of the proton velocity distributions, including hammerhead features that suggest non-isotropic bro…
The aperiodic firehose instability of counter-beaming electrons in space plasmas
M. Lazar, R. A. López, P. S. Moya +2
Recent studies have revealed new unstable regimes of the counter-beaming electrons specific to hot and dilute plasmas from astrophysical scenarios. The (counter-)beaming electron f…
Comparing the counter-beaming and temperature anisotropy driven aperiodic electron firehose instabilities in collisionless plasma environments
Pablo S. Moya, Rodrigo A Lopez, Marian Lazar +2
The electron firehose instabilities are among the most studied kinetic instabilities, especially in the context of space plasmas, whose dynamics is mainly controlled by collisionle…
Mixing the solar wind proton and electron scales. Theory and 2D-PIC simulations of firehose instability
R. A. López, A. Micera, M. Lazar +5
Firehose-like instabilities (FIs) are cited in multiple astrophysical applications. Of particular interest are the kinetic manifestations in weakly-collisional or even collisionles…
A new low-beta regime for unstable proton firehose modes in bi-Kappa distributed plasmas
S. M. Shaaban, M. Lazar, R. F. Wimmer-Schweingruber +1
In the solar wind plasma an excess of kinetic temperature along the background magnetic field stimulates proton firehose modes to grow if the parallel plasma beta parameter is suff…
General dispersion properties of magnetized plasmas with drifting bi-Kappa distributions. DIS-K: DIspersion Solver for Kappa plasmas
R. A. López, S. M. Shaaban, M. Lazar
Space plasmas are known to be out of (local) thermodynamic equilibrium, as observations show direct or indirect evidences of non-thermal velocity distributions of plasma particles.…
Electromagnetic instabilities of low-beta alpha/proton beams in space plasmas
M. A. Rehman, S. M. Shaaban, P. H. Yoon +2
Relative drifts between different species or particle populations are characteristic to solar plasma outflows, e.g., in the fast streams of the solar winds, coronal mass ejections…
Particle-in-cell simulations of the whistler heat-flux instability in the solar wind conditions
R. A. López, S. M. Shaaban, M. Lazar +4
In collision-poor plasmas from space, e.g., solar wind or stellar outflows, the heat-flux carried by the strahl or beaming electrons is expected to be regulated by the self-generat…
Particle-In-Cell simulations of the parallel proton firehose instability influenced by the electron temperature anisotropy in solar wind conditions
A. Micera, E. Boella, A. N. Zhukov +4
In situ observations of the solar wind show a limited level of particle temperature anisotropy with respect to the interplanetary magnetic field direction. Kinetic electromagnetic…
Quasilinear Approach of the Whistler Heat-Flux Instability in the Solar Wind
S. M. Shaaban, M. Lazar, P. H. Yoon +2
The hot beaming (or strahl) electrons responsible for the main electron heat-flux in the solar wind are believed to be self-regulated by the electromagnetic beaming instabilities,…
The Interplay of the Solar Wind Core and Suprathermal Electrons: A Quasilinear Approach for Firehose Instability
S. M. Shaaban, M. Lazar, P. H. Yoon +1
In the solar wind an equipartition of kinetic energy densities can be easily established between thermal and suprathermal electrons and the instability conditions are markedly alte…
Beaming electromagnetic (or heat-flux) instabilities from the interplay with the electron temperature anisotropies
S. M. Shaaban, M. Lazar, P. H. Yoon +1
In space plasmas kinetic instabilities are driven by the beaming (drifting) components and/or the temperature anisotropy of charged particles. The heat-flux instabilities are known…
Instability constraints for the electron temperature anisotropy in the slow solar wind. Thermal core vs. suprathermal halo
M. Lazar, S. M. Shaaban, V. Pierrard +2
This letter presents the results of an advanced parametrization of the solar wind electron temperature anisotropy and the instabilities resulting from the interplay of the (bi-)Max…
Shaping the solar wind temperature anisotropy by the interplay of electron and proton instabilities
S. M. Shaaban, M. Lazar, S. Poedts +1
A variety of nonthermal characteristics like kinetic, e.g., temperature, anisotropies and suprathermal populations (enhancing the high energy tails of the velocity distributions) a…
Firehose constraints for the solar wind suprathermal electrons
M. Lazar, S. M. Shaaban, S. Poedts +1
The indefinite increase of temperature predicted by the solar wind expansion in the direction parallel to the interplanetary magnetic field is already notorious for not being confi…
Effects of suprathermal electrons on the proton temperature anisotropy in space plasmas: Electromagnetic ion-cyclotron instability
S. M. Shaaban, M. Lazar, S. Poedts +1
In collision-poor plasmas from space, e.g., the solar wind and planetary magnetospheres, the kinetic anisotropy of the plasma particles is expected to be regulated by the kinetic i…