@Article{RempelChiBerSzaHal:2017:ObVoDe,
author = "Rempel, E. L. and Chian, Abraham Chian-Long and Beron-Vera, F. J.
and Szanyi, S. and Haller, G.",
affiliation = "{Instituto Tecnol{\'o}gico de Aeron{\'a}utica (ITA)} and
{Instituto Nacional de Pesquisas Espaciais (INPE)} and {University
of Miami} and {Institute for Mechanical Systems} and {Institute
for Mechanical Systems}",
title = "Objective vortex detection in an astrophysical dynamo",
journal = "Monthly Notices of the Royal Astronomical Society Letters",
year = "2017",
volume = "466",
number = "1",
pages = "L108--L112",
abstract = "A novel technique for detecting Lagrangian vortices is applied to
a helical magnetohydrodynamic dynamo simulation. The vortices are
given by tubular level surfaces of the Lagrangian averaged
vorticity deviation, the trajectory integral of the normed
difference of the vorticity from its spatial mean. This simple
method is objective, i.e. invariant under time-dependent rotations
and translations of the coordinate frame. We also adapt the
technique to use it on magnetic fields and propose the method of
integrated averaged current deviation to determine precisely the
boundary of magnetic vortices. The relevance of the results for
the study of vortices in solar plasmas is discussed.",
doi = "10.1093/mnrasl/slw248",
url = "http://dx.doi.org/10.1093/mnrasl/slw248",
issn = "0035-8711",
language = "en",
targetfile = "rempel_objective.pdf",
urlaccessdate = "27 abr. 2024"
}