@InProceedings{BragaDalMenEchSte:2018:CoMaEj,
author = "Braga, Carlos Roberto and Dal Lago, Alisson and Mendon{\c{c}}a,
Rafael Rodrigues Souza de and Echer, Ezequiel and Stenborg,
Guillermo",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas
Espaciais (INPE)} and {Naval Research Laboratory}",
title = "Coronal mass ejections’ kinematics in 3d using observations from
stereo",
year = "2018",
organization = "Cospar Scientific Assembly, 42.",
abstract = "We have implemented a method to track coronal mass ejections (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 CME events observed
simultaneously by the twin Solar Terrestrial Relations Observatory
(STEREO) COR2 coronagraph imagers from 2008 to 2011 in order to
obtain their 3D kinematical characterization (i.e., the velocity
vector) along with their morphological properties. Some of these
events have already been analyzed using other methodologies. In
these cases, a comparison of results was carried out. We found
that, in spite of both the different nature of the methodologies,
and the different spatial coverage of the other studies with
respect to ours, the majority of the results agree. On the other
had, some events exhibited discrepancies in the magnitude of the
velocity vector, in the longitudinal direction of propagation, and
in latitude. The discrepancies appeared mainly in those cases
where quasi-simultaneous, quasi-co-located events were observed in
the coronagraphs fields of view. (G.S. gratefully acknowledges the
support of NASA.).",
conference-location = "Pasadena, California",
conference-year = "14-22 July",
language = "en",
targetfile = "braga_coronal.pdf",
urlaccessdate = "29 mar. 2024"
}