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@Article{BragaDalEchSteMen:2017:PsDeCo,
               author = "Braga, Carlos Roberto and Dal Lago, Alisson and Echer, Ezequiel 
                         and Stenborg, Guillermo and Mendon{\c{c}}a, Rafael Rodrigues 
                         Souza de",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {U.S. Naval Research Laboratory} 
                         and {Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "Pseudo-automatic determination of coronal mass ejections' 
                         kinematics in 3D",
              journal = "Astrophysical Journal",
                 year = "2017",
               volume = "842",
               number = "2",
                pages = "134",
                month = "June",
             keywords = "interplanetary medium, solar–terrestrial relations, Sun: corona, 
                         Sun: coronal mass ejections (CMEs), techniques: image 
                         processing.",
             abstract = "Coronal mass ejection (CME) events are among the main drivers of 
                         geomagnetic disturbances, and hence play a central role in the 
                         SunEarth system. Their monitoring and, in particular, the 
                         determination of their speed and direction of propagation are key 
                         issues for the forecasting of space weather near to Earth. We have 
                         implemented a method to track CME events in three dimensions by 
                         combining triangulation and tie-pointing analysis with a 
                         supervised computer vision algorithm. This novel approach does not 
                         rely on any geometric constraint, and eliminates the need for 
                         visual identification of the CME boundaries. We applied our method 
                         to 17 CME events observed simultaneously by the twin Solar 
                         Terrestrial Relations Observatory (STEREO) COR2 coronagraph 
                         imagers from 2008 December to 2011 November in order to obtain 
                         their 3D kinematical characterization (i.e., the velocity vector) 
                         along with their morphological properties. About ten of these 
                         events have already been analyzed using other methodologies. In 
                         these cases, we carried out a thorough comparison with our results 
                         and found that, in spite of the different nature and spatial 
                         coverage range of the other methods with respect to CORSET3D, the 
                         majority of the results agree. We found, however, that three 
                         events exhibited discrepancies in the magnitude of the velocity 
                         vector, four in the longitudinal direction of propagation, and in 
                         only one case was there a discrepancy in latitude. The 
                         discrepancies appeared in those cases where quasi-simultaneous, 
                         quasi-colocated events were observed in the coronagraphs fields of 
                         view.",
                  doi = "10.3847/1538-4357/aa755f",
                  url = "http://dx.doi.org/10.3847/1538-4357/aa755f",
                 issn = "0004-637X and 1538-4357",
             language = "en",
           targetfile = "braga_pseudo.pdf",
        urlaccessdate = "04 dez. 2020"
}


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