@Article{ChianSiReRuGoKuPa:2020:LaChSa,
               author = "Chian, Abraham Chian-Long and Silva, Suzana de Souza e Almeida and 
                         Rempel, Erico Luiz and Rubio, Luis Ramon Bellot and Gosic, Milan 
                         and Kussano, Kanya and Park, Sung-Hong",
          affiliation = "{Nagoya University} and {Instituto Tecnol{\'o}gico de 
                         Aeron{\'a}utica (ITA)} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)} and {Instituto de Astrof{\'{\i}}sica de 
                         Andaluc{\'{\i}}a (CSIC)} and {Lockheed Martin Solar and 
                         Astrophysics Laboratory} and {Nagoya University} and {Nagoya 
                         University}",
                title = "Lagrangian chaotic saddles and objective vortices in solar 
                         plasmas",
              journal = "Physical Review E",
                 year = "2020",
               volume = "102",
               number = "6",
                pages = "e060201",
                month = "Dec.",
             abstract = "We report observational evidence of Lagrangian chaotic saddles in 
                         plasmas, given by the intersections of finite-time unstable and 
                         stable manifolds, using an \≈ 22 h sequence of spacecraft 
                         images of the horizontal velocity field of solar photosphere. A 
                         set of 29 persistent objective vortices with lifetimes varying 
                         from 28.5 to 298.3 min are detected by computing the Lagrangian 
                         averaged vorticity deviation. The unstable manifold of the 
                         Lagrangian chaotic saddles computed for \≈ 11 h exhibits 
                         twisted folding motions indicative of recurring vortices in a 
                         magnetic mixed-polarity region. We show that the persistent 
                         objective vortices are formed in the gap regions of Lagrangian 
                         chaotic saddles at supergranular junctions.",
                  doi = "10.1103/PhysRevE.102.060201",
                  url = "http://dx.doi.org/10.1103/PhysRevE.102.060201",
                 issn = "1539-3755",
             language = "en",
           targetfile = "chian_lagrangian.pdf",
        urlaccessdate = "16 maio 2024"
}