Conferencia
Abstract:
We present a study on the variation of the oxygen abundance within equatorial streamers affected by coronal mass ejections (CMEs). We select CME events during the period of minimum solar activity May 1996 - March 1997, from the Large Angle Spectroscopic Coronagraph (LASCO/SoHO) CME catalog. The selected events have diverse intensities and affect the coronal streamer belt structure. For each event, we derive the oxygen abundance within the streamer belt from spectroscopic coronal observations performed with the Ultraviolet Coronagraph Spectrometer (UVCS/SoHO). We analyze UVCS data obtained before and after the actual CME occurrences. Within the streamer belt core structure the oxygen abundance usually exhibits a depleted region, presumably due to gravitational settling. We analyze how this degree of depletion changes within streamers observed before and after CME events of diverse intensities. We report our main results and discuss their implications for the dynamics of the streamer region.
Registro:
| Documento: | Conferencia |
| Título: | Oxygen abundance variations in coronal streamers affected by CMES |
| Autor: | Vásquez, A.M.; Raymond, J.C. |
| Ciudad: | Sicily |
| Filiación: | Intituto de Astronomía y Física del Espacio, CC 67, Suc 28 (1428), Buenos Aires, Argentina Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, United States |
| Palabras clave: | Abundances; CMEs; Streamers; Sun:Corona; Gravitation; Oxygen; Solar energy; Ultraviolet spectrometers; Ultraviolet spectroscopy; Abundances; Coronal mass ejections (CMEs); Streamers; Sun:Corona; Plasma waves |
| Año: | 2006 |
| Número: | 617 |
| Título revista: | SOHO-17: 10 Years of SOHO and Beyond |
| Título revista abreviado: | Eur Space Agency Spec Publ ESA SP |
| ISSN: | 03796566 |
| CODEN: | ESPUD |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03796566_v_n617_p_Vasquez |
Referencias:
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Citas:
---------- APA ----------
Vásquez, A.M. & Raymond, J.C. (2006) . Oxygen abundance variations in coronal streamers affected by CMES. SOHO-17: 10 Years of SOHO and Beyond(617).Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03796566_v_n617_p_Vasquez [ ]
---------- CHICAGO ----------
Vásquez, A.M., Raymond, J.C. "Oxygen abundance variations in coronal streamers affected by CMES" . SOHO-17: 10 Years of SOHO and Beyond, no. 617 (2006).Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03796566_v_n617_p_Vasquez [ ]
---------- MLA ----------
Vásquez, A.M., Raymond, J.C. "Oxygen abundance variations in coronal streamers affected by CMES" . SOHO-17: 10 Years of SOHO and Beyond, no. 617, 2006.Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03796566_v_n617_p_Vasquez [ ]
---------- VANCOUVER ----------
Vásquez, A.M., Raymond, J.C. Oxygen abundance variations in coronal streamers affected by CMES. Eur Space Agency Spec Publ ESA SP. 2006(617).Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03796566_v_n617_p_Vasquez [ ]
