Search Results - (Author, Cooperation:V. V. Gvaramadze)

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  1. 1
    J. Mackey ; S. Mohamed ; V. V. Gvaramadze ; R. Kotak ; N. Langer ; D. M. Meyer ; T. J. Moriya ; H. R. Neilson
    Nature Publishing Group (NPG)
    Published 2014
    Staff View
    Publication Date:
    2014-08-15
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  2. 2
    Staff View
    ISSN:
    1572-946X
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Physics
    Notes:
    Abstract We consider evolution of the regular magnetic field in turbulent astrophysical jets. The observed lateral expansion of a jet is approximately described by a linear in coordinates regular velocity field (the Hubble flow). It is shown that in expanding turbulent jets with non-vanishing mean helicity of the turbulence temporal amplification and effective realignment of the regular magnetic field occurs with the field changing orientation from the transverse to the longitudinal one along the jet axis. The distance at which the realiggment occurs depends on parameters of the jet, in particular, on the power of the central source. Estimates for the jet in a weak source 3C 31 favourably agree with observations.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF00643540

    Articles: DFG German National Licenses
  3. 3
    Gvaramadze, V. V. ; Lominadze, Dzh G.
    Springer
    Published 1988
    Staff View
    ISSN:
    1573-8191
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF01014849

    Articles: DFG German National Licenses
  4. 4
    Gvaramadze, V. V.
    Springer
    Published 1995
    Staff View
    ISSN:
    1572-946X
    Keywords:
    Neutron stars ; Unsteady accretion ; GRBs
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Physics
    Notes:
    Abstract We propose a model of gamma-ray bursts (GRBs) based on close Galactic neutron stars with accretion disks. We outline a simple mechanism of unsteady plasma ejections during episodic accretion events. The relative kinetic energy of ejected blobs can be converted into gamma-rays by internal shocks. The beaming of gamma-ray emission can be responsible for the observed isotropic angular distribution of GRBs.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF00658659

    Articles: DFG German National Licenses