2.5k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Ilia State UniversityGE219 papers
- Instituto de Astrofísica de AndalucíaES90 papers
- Center for Astrophysics Harvard & SmithsonianUS82 papers
- Osservatorio Astrofisico di TorinoIT81 papers
- National Institute for AstrophysicsIT77 papers
- Boston UniversityUS72 papers
- Pulkovo ObservatoryRU71 papers
- Instituto de Astrofísica de CanariasES70 papers
- Space Research InstituteRU70 papers
- Centre National de la Recherche ScientifiqueFR69 papers
- Kansas State UniversityUS69 papers
- St Petersburg UniversityRU69 papers
17 papers · 1 filter
Interrelation between radio and X-ray signatures of drifting subpulses in pulsars
Janusz Gil, George Melikidze, Bing Zhang
We examined a model of partially screened gap region above the polar cap, in which the electron-positron plasma generated by sparking discharges coexists with thermionic flow eject…
On the Detection of Magnetic Helicity
Tina Kahniashvili, Tanmay Vachaspati
Magnetic fields in various astrophysical settings may be helical and, in the cosmological context, may provide a measure of primordial CP violation during baryogenesis. Yet it is d…
Kink waves in solar spicules: observation and modelling
V. Kukhianidze, T. V. Zaqarashvili, E. Khutsishvili
Height series of Doppler observation at the solar limb (covering 3800 - 8700 km distance above the photosphere) in spectral line obtained by big coronagraph of Abastumani Ast…
On the origin of the circular polarization in radio pulsars
G. Gogoberidze, G. Z. Machabeli
Properties of circularly polarized waves are studied in the pulsar magnetosphere plasma. It is shown that some observational characteristics of the circular polarization observed i…
Linear coupling and over-reflection phenomena of magnetohydrodynamic waves in smooth shear flows
G. Gogoberidze, G. D. Chagelishvili, R. Z. Sagdeev +1
Special features of magnetohydrodynamic waves linear dynamics in smooth shear flows are studied. Quantitative asymptotic and numerical analysis are performed for wide range of syst…
Scaling law of the plasma turbulence with non conservative fluxes
Grigol Gogoberidze
It is shown that in the presence of anisotropic kinetic dissipation existence of scale invariant power law spectrum of plasma turbulence is possible. Obtained scale invariant spect…
Effects of Cosmological Magnetic Helicity on the CMB
Tina Kahniashvili
In this talk I present a short review of primordial magnetic helicity effects on Cosmic Microwave Background (CMB) temperature and polarization anisotropies. These effects allow us…
Surface gravity waves in deep fluid at vertical shear flows
G. Gogoberidze, L. Samushia, G. D. Chagelishvili +2
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…
Supernova remnant S147 and its associated neutron star(s)
V. V. Gvaramadze
The supernova remnant S147 harbors the pulsar PSR J0538+2817 whose characteristic age is more than an order of magnitude greater than the kinematic age of the system (inferred from…
Cool Dark Cosmic Dust as a Reservoir of Absorbed Energy
I. Simonia
The conception of cool dark cosmic dust has been proposed. The process of accumulation of absorbed energy by dust of such kind is considered. The conception of accumulation horizon…
Origin of long-period Alfv{é}n waves in the solar wind
T. V. Zaqarashvili, G. Belvedere
We suggest that the observed long-period Alfv{é}n waves in the solar wind may be generated in the solar interior due to the pulsation of the Sun in the fundamental radial mode. The…
Multiwavelength Observations of 3C 66A during the WEBT campaign of 2003 - 2004
M. Boettcher, J. Harvey, M. Joshi
The BL Lac object 3C 66A was the target of an extensive multiwavelength monitoring campaign from July 2003 through April 2004, involving observations throughout the electromagnetic…
Polarized Cosmological Gravitational Waves from Primordial Helical Turbulence
Tina Kahniashvili, Grigol Gogoberidze, Bharat Ratra +1
We show that helical turbulence produced during a first-order phase transition generates circularly polarized cosmological gravitational waves (GWs). The characteristic frequency o…
On the origin of the drifting subpulses in radio pulsars
G. Gogoberidze, G. Z. Machabeli, D. Melrose +1
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 f…
Effects of Cosmological Magnetic Helicity on the Cosmic Microwave Background
Tina Kahniashvili, Bharat Ratra, ;
Cosmological magnetic fields induce temperature and polarization fluctuations in the cosmic microwave background (CMB) radiation. A cosmological magnetic field with current amplitu…
Spiral density wave generation by vortices in Keplerian flows
G. Bodo, G. Chagelishvili, G. Murante +3
We perform a detailed analytical and numerical study of the dynamics of perturbations (vortex/aperiodic mode, Rossby and spiral-density waves) in 2D compressible disks with a Keple…
Neutrino Mass Limit from Galaxy Cluster Number Density Evolution
Tina Kahniashvili, Eckhard von Toerne, Natalia A. Arhipova +1
Measurements of the evolution with redshift of the number density of massive galaxy clusters are used to constrain the energy density of massive neutrinos and so the sum of neutrin…