Weak and strong regimes of incompressible magnetohydrodynamic turbulence (2009)
Gogoberidze, G., Mahajan, S. M., Poedts, S.
It is shown that in the framework of the weak turbulence theory, the autocorrelation and cascade timescales are always of the same order of magnitude. This means that, contrary to the general belief,...
Farley-Buneman Instability in the Solar Chromosphere (2009)
Gogoberidze, G., Voitenko, Y., Poedts, S., Goossens, M.
The Farley-Buneman instability is studied in the partially ionized plasma of the solar chromosphere taking into account the finite magnetization of the ions and Coulomb collisions. We obtain the...
Infrasound generation by tornadic supercell storms (2008)
Akhalkatsi, M., Gogoberidze, G.
Acoustic wave generation by turbulence in the stratified, moist atmosphere is studied. It is shown that in the saturated moist air turbulence in addition to the Lighthill's quadrupole and the dipole...
Excitation and conversion of electromagnetic waves in pulsar magnetospheres (2007)
Gogoberidze, G., Machabeli, G. Z., Usov, V. V.
We demonstrate that nonlinear decay of obliquely propagating Langmuir waves into Langmuir and Alfven waves (L --> L'+A) is possible in a one-dimensional, highly relativistic, streaming, pair plasma....
On the Nature of Incompressible Magnetohydrodynamic Turbulence (2006)
A novel model of incompressible magnetohydrodynamic turbulence in the presence of a strong external magnetic field is proposed for explanation of recent numerical results. According to the proposed...
Gogoberidze, G., Chagelishvili, G. D., Sagdeev, R. Z., Lominadze, D. G.
Special features of magnetohydrodynamic waves linear dynamics in smooth shear flows are studied. Quantitative asymptotic and numerical analysis are performed for wide range of system parameters when...
On the origin of the circular polarization in radio pulsars (2005)
Gogoberidze, G., Machabeli, G. Z.
Properties of circularly polarized waves are studied in the pulsar magnetosphere plasma. It is shown that some observational characteristics of the circular polarization observed in the pulsar radio...
Surface gravity waves in deep fluid at vertical shear flows (2005)
Gogoberidze, G., Samushia, L., Chagelishvili, G. D., Lominadze, J. G., Horton, W.
Special features of surface gravity waves in deep fluid flow with constant vertical shear of velocity is studied. It is found that the mean flow velocity shear leads to non-trivial modification of...
Development of Kolmogorov spectrum in the pulsar radio emission (2005)
Machabeli, G. Z., Gogoberidze, G.
It is shown that the scattering of electromagnetic waves by Langmuir ones taking into the account the electric drift motion of particles, is the most intense nonlinear process and should be...
On the origin of the drifting subpulses in radio pulsars (2005)
Gogoberidze, G., Machabeli, G. Z., Melrose, D., Luo, Q.
A model for the main observational characteristics of the radio emission of pulsars with well organized drifting subpulses is presented. We propose that drifting subpulses result from the modulation...
Linear coupling of acoustic and cyclotron waves in plasma flows (2005)
It is found that in magnetized electrostatic plasma flows the velocity shear couples ion-acoustic waves with ion-cyclotron waves and leads, under favorable conditions, to their efficient reciprocal...
Infrasound generation by turbulent convection (2004)
Akhalkatsi, M., Gogoberidze, G., Morrison, P. J.
Low frequency acoustic wave generation is studied taking into account the effect of stratification, inhomogeneity of background velocity profile and temperature fluctuations. It is shown that for the...