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A firehose-like aperiodic instability of counter-beaming electron plasmas
(IOP Publishing, 2020)
Depending on the physical conditions involved, beam plasma systems may reveal new unstable regimes triggered by wave instabilities of different natures. We show through linear theory and numerical simulations the existence ...
Electrostatic instabilities induced by large-amplitude left-hand polarized waves
(Blackwell Publishing Ltd, 2004)
We study the effect of a large-amplitude left-hand polarized wave on ion acoustic instabilities. We show that the presence of a finite amplitude left-hand polarized wave produces electrostatic instabilities above a threshold ...
Particle-in-Cell Simulations of Continuosly Driven Mirror and Ion cycloton Instability in High Beta Astrophysical and Heliospheric Plasmas
(American Astronomical Society, 2015)
We use particle-in-cell simulations to study the nonlinear evolution of ion velocity space instabilities in an
idealized problem in which a background velocity shear continuously amplifies the magnetic field. We simulate
the ...
PIC Simulations of Velocity-space Instabilities in a Decreasing Magnetic Field: Viscosity and Thermal Conduction
(Institute of Physics Publishing, 2018)
We use particle-in-cell (PIC) simulations of a collisionless, electron–ion plasma with a decreasing background
magnetic field, B, to study the effect of velocity-space instabilities on the viscous heating and thermal ...
Faraday’s Instability for Viscous Fluids
(1997-02-03)
We derive an exact equation which is nonlocal in time for the linear evolution of the surface of
a viscous fluid, and show that this equation becomes local and of second order in an interesting
limit. We use our local ...
The financial instability hypothesis and the paradox of debt: a microeconometric approach for Latin America
(Edward Elgar Publishing, 2018-07)
Hyman Minsky's financial instability hypothesis (FIH) argues that as part of the normal functioning of capitalist economies robust financial structures tend to evolve into highly leveraged fragile financial structures. The ...
Convective instabilities in thermoviscoelastic micropolar fluids.
(2011-10-13)
The infinitesimal instabilities in plane horizontal layer of viscoelastic micropolar fluid under uniform heating are investigated. The micropolar fluid is a fluid each particle of which has a six degrees of freedoms of ...
A note on the stability and instability of travelling wave of Korteweg-de Vries type : the periodic case.
(2012-10-04)
In this paper we adapt the work of M. Grillakis, J. Shatah, and W. Strauss, or J. Bona, P.
Souganidis and W. Strauss to the periodic case in spaces having the mean zero property in order
to establish the orbital ...
New parametric decays of proton beam-plasma electromagnetic waves
(Blackwell Publishing Ltd, 2002)
Ion beam-plasma interactions are the source of wave activity in several space environments. Therefore the study of these waves and their parametric decays are very important in space physics. Thus we study parametric decays ...
Stabilization of right-hand polarized beam plasma instabilities due to a large-amplitude left-hand polarized wave: A simulation study
(Blackwell Publishing Ltd, 2004)
It has been recently shown that the presence of large amplitude left-hand polarized waves can change the linear properties of ion-beam plasma electromagnetic instabilities [Gomberoff, 2003]. Thus, it was shown that in the ...