A. Gruzinov

Publications133
h-index30
Citations4,997
Highly Influential Citations239
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Convection-dominated Accretion Flows
Nonradiating advection-dominated accretion flows are convectively unstable in the radial direction. We calculate the two-dimensional (r-θ) structure of such flows assuming that (1) convection…
Fuzzy cold dark matter: the wave properties of ultralight particles.
TLDR
These problems might be solved, and the virtues of CDM models retained, even without postulating ad hoc dark matter particle or field interactions, if the dark matter is composed of ultralight scalar particles initially in a (cold) Bose-Einstein condensate, similar to axion dark matter models.
Power of an axisymmetric pulsar.
TLDR
The background magnetic configuration, on which all the puzzling pulsar phenomena are taking place, is now known with some confidence.
Cold and Fuzzy Dark Matter
There is an asymmetry between the mass of the electric charges, for example proton and electron, can understood by the asymmetrical Planck Distribution Law. This temperature dependent energy…
Solar fusion cross sections
We review and analyze the available information on the nuclear-fusion cross sections that are most important for solar energy generation and solar neutrino production. We provide best values for the…
Constraining the accretion rate onto Sagittarius A * using linear polarization
Two possible explanations for the low luminosity of the supermassive black hole at the center of our Galaxy are (1) an accretion rate of the order of the canonical Bondi value (~10-5 M? yr-1) but a…
Gamma-ray burst afterglow: Polarization and analytic light curves
Gamma-ray burst afterglow polarization is discussed. We find an observable, up to ~10%, polarization, if the magnetic field coherence length grows at about the speed of light after the field is…
Giant AGN Flares and Cosmic Ray Bursts
We predict a new class of very intense, short-duration active galactic nucleus (AGN) flares capable of accelerating the highest energy cosmic rays, resulting from the tidal disruption of a star or…
TURBULENCE AND PARTICLE HEATING IN ADVECTION-DOMINATED ACCRETION FLOWS
We extend and reconcile recent work on turbulence and particle heating in advection-dominated acc- retion —ows. For approximately equipartition magnetic —elds, the turbulence primarily heats the…
New mechanism for generating density perturbations from inflation
We propose a new mechanism to generate density perturbations in inflationary models. Spatial fluctuations in the decay rate of the inflaton field to ordinary matter lead to fluctuations in the…
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