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Alexander Schekochihin
Researcher at University of Oxford
Publications - 297
Citations - 17672
Alexander Schekochihin is an academic researcher from University of Oxford. The author has contributed to research in topics: Turbulence & Magnetic field. The author has an hindex of 71, co-authored 280 publications receiving 15662 citations. Previous affiliations of Alexander Schekochihin include University of Maryland, College Park & Princeton University.
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Journal ArticleDOI
Astrophysical Gyrokinetics: Kinetic and Fluid Turbulent Cascades in Magnetized Weakly Collisional Plasmas
Alexander Schekochihin,Alexander Schekochihin,Steven Cowley,Steven Cowley,William Dorland,Gregory W. Hammett,Gregory G. Howes,Eliot Quataert,Tomoya Tatsuno +8 more
TL;DR: In this paper, a theoretical framework for understanding plasma turbulence in astrophysical plasmas is presented, motivated by observations of electromagnetic and density fluctuations in the solar wind, interstellar medium and galaxy clusters, as well as by models of particle heating in accretion disks.
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Instability of current sheets and formation of plasmoid chains
TL;DR: In this article, current sheets formed in magnetic reconnection events are found to be unstable to high-wavenumber perturbations, and a chain of plasmoid secondary islands is formed, whose number scales as S3∕8.
Journal ArticleDOI
Simulations of the Small-Scale Turbulent Dynamo
Alexander Schekochihin,Alexander Schekochihin,Steven Cowley,Steven Cowley,S. F. Taylor,S. F. Taylor,J. L. Maron,J. L. Maron,James C. McWilliams +8 more
TL;DR: In this article, an analytical model of saturation based on the idea of partial two-dimensionalization of the velocity gradients with respect to the local direction of the magnetic folds is proposed.
Journal ArticleDOI
Simulations of small-scale turbulent dynamo
Alexander Schekochihin,Steven Cowley,Steven Cowley,S. F. Taylor,J. L. Maron,J. L. Maron,James C. McWilliams +6 more
TL;DR: In this paper, an extensive numerical study of the small-scale turbulent dynamo at large magnetic Prandtl numbers Pm is presented, where the authors concentrate on three topics: magnetic energy spectra and saturation levels, the structure of the field lines, and the field-strength distribution.
Journal ArticleDOI
Astrophysical Gyrokinetics: Basic Equations and Linear Theory
Gregory G. Howes,Steven Cowley,Steven Cowley,William Dorland,Gregory W. Hammett,Eliot Quataert,Alexander Schekochihin +6 more
TL;DR: In this paper, a low-frequency expansion of the kinetic theory called gyrokinetics is proposed to describe the anisotropic turbulence in a wide variety of astrophysical plasmas including accretion disks, the solar wind, and the interstellar and intracluster medium.