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 = "24 nov. 2020"