Mass-Loss Evolution in the EUV Low Corona from SDO/AIA Data
We carry out an analysis of the mass that is ejected from three coronal dimming regions observed by the Atmospheric Imaging Assembly (AIA) on board the Solar Dynamics Observatory. The three events are unambiguously identified with white-light coronal mass ejections (CMEs) that are associated in turn...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_00380938_v292_n1_p_Lopez |
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todo:paper_00380938_v292_n1_p_Lopez2023-10-03T14:48:57Z Mass-Loss Evolution in the EUV Low Corona from SDO/AIA Data López, F.M. Hebe Cremades, M. Nuevo, F.A. Balmaceda, L.A. Vásquez, A.M. Corona, active Coronal mass ejections Flares Low coronal signatures We carry out an analysis of the mass that is ejected from three coronal dimming regions observed by the Atmospheric Imaging Assembly (AIA) on board the Solar Dynamics Observatory. The three events are unambiguously identified with white-light coronal mass ejections (CMEs) that are associated in turn with surface activity of diverse nature: an impulsive (M-class) flare, a weak (B-class) flare, and a filament eruption without a flare. The use of three AIA coronal passbands allows applying a differential emission measure technique to define the dimming regions and identify their ejected mass through the analysis of the electronic density depletion associated with the eruptions. The temporal evolution of the mass loss from the three dimmings can be approximated by an exponential equation followed by a linear fit. We determine the mass of the associated CMEs from COR2 data. The results show that the ejected masses from the low corona represent a considerable amount of the CME mass. We also find that plasma is still being ejected from the low corona at the time when the CMEs reach the COR2 field of view. The temporal evolution of the angular width of the CMEs, of the dimming regions in the low corona, and of the flux registered by GOES in soft X-rays are all in close relation with the behavior of mass ejection from the low corona. We discuss the implications of our findings toward a better understanding of the temporal evolution of several parameters associated with the analyzed dimmings and CMEs. © 2016, Springer Science+Business Media Dordrecht. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00380938_v292_n1_p_Lopez |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Corona, active Coronal mass ejections Flares Low coronal signatures |
| spellingShingle |
Corona, active Coronal mass ejections Flares Low coronal signatures López, F.M. Hebe Cremades, M. Nuevo, F.A. Balmaceda, L.A. Vásquez, A.M. Mass-Loss Evolution in the EUV Low Corona from SDO/AIA Data |
| topic_facet |
Corona, active Coronal mass ejections Flares Low coronal signatures |
| description |
We carry out an analysis of the mass that is ejected from three coronal dimming regions observed by the Atmospheric Imaging Assembly (AIA) on board the Solar Dynamics Observatory. The three events are unambiguously identified with white-light coronal mass ejections (CMEs) that are associated in turn with surface activity of diverse nature: an impulsive (M-class) flare, a weak (B-class) flare, and a filament eruption without a flare. The use of three AIA coronal passbands allows applying a differential emission measure technique to define the dimming regions and identify their ejected mass through the analysis of the electronic density depletion associated with the eruptions. The temporal evolution of the mass loss from the three dimmings can be approximated by an exponential equation followed by a linear fit. We determine the mass of the associated CMEs from COR2 data. The results show that the ejected masses from the low corona represent a considerable amount of the CME mass. We also find that plasma is still being ejected from the low corona at the time when the CMEs reach the COR2 field of view. The temporal evolution of the angular width of the CMEs, of the dimming regions in the low corona, and of the flux registered by GOES in soft X-rays are all in close relation with the behavior of mass ejection from the low corona. We discuss the implications of our findings toward a better understanding of the temporal evolution of several parameters associated with the analyzed dimmings and CMEs. © 2016, Springer Science+Business Media Dordrecht. |
| format |
JOUR |
| author |
López, F.M. Hebe Cremades, M. Nuevo, F.A. Balmaceda, L.A. Vásquez, A.M. |
| author_facet |
López, F.M. Hebe Cremades, M. Nuevo, F.A. Balmaceda, L.A. Vásquez, A.M. |
| author_sort |
López, F.M. |
| title |
Mass-Loss Evolution in the EUV Low Corona from SDO/AIA Data |
| title_short |
Mass-Loss Evolution in the EUV Low Corona from SDO/AIA Data |
| title_full |
Mass-Loss Evolution in the EUV Low Corona from SDO/AIA Data |
| title_fullStr |
Mass-Loss Evolution in the EUV Low Corona from SDO/AIA Data |
| title_full_unstemmed |
Mass-Loss Evolution in the EUV Low Corona from SDO/AIA Data |
| title_sort |
mass-loss evolution in the euv low corona from sdo/aia data |
| url |
http://hdl.handle.net/20.500.12110/paper_00380938_v292_n1_p_Lopez |
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| _version_ |
1807314408092729344 |