S
Steven Cowley
Researcher at Imperial College London
Publications - 187
Citations - 12844
Steven Cowley is an academic researcher from Imperial College London. The author has contributed to research in topics: Turbulence & Magnetic field. The author has an hindex of 57, co-authored 187 publications receiving 11796 citations. Previous affiliations of Steven Cowley include University of California, Los Angeles & Los Alamos National Laboratory.
Papers
More filters
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.
Journal ArticleDOI
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.