Coronal Transient Events During Two Solar Minima: Their Solar Source Regions and Interplanetary Counterparts

In the frame of two coordinated observational and research efforts, two full solar rotations were investigated in the times of two distinct solar minima. These two campaigns were dubbed Whole Sun Month (WSM; 10 August - 8 September 1996) and Whole Heliosphere Interval (WHI; 20 March - 16 April 2008)...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Cremades, H., Mandrini, C.H., Dasso, S.
Formato:	JOUR
Materias:	Corona Coronal mass ejections Interplanetary ejecta Solar activity cycle
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_00380938_v274_n1-2_p233_Cremades
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_00380938_v274_n1-2_p233_Cremades
record_format	dspace
spelling	todo:paper_00380938_v274_n1-2_p233_Cremades2023-10-03T14:48:45Z Coronal Transient Events During Two Solar Minima: Their Solar Source Regions and Interplanetary Counterparts Cremades, H. Mandrini, C.H. Dasso, S. Corona Coronal mass ejections Interplanetary ejecta Solar activity cycle In the frame of two coordinated observational and research efforts, two full solar rotations were investigated in the times of two distinct solar minima. These two campaigns were dubbed Whole Sun Month (WSM; 10 August - 8 September 1996) and Whole Heliosphere Interval (WHI; 20 March - 16 April 2008). The nearly uninterrupted gathering of solar coronal data since the beginning of the Solar and Heliospheric Observatory (SOHO) era offers the exceptional possibility of comparing two solar minima for the first time, with regard to the coronal transient aspect. This study characterizes the variety of outward-traveling transients observed in the solar corona during both time intervals, from very narrow jet-like events to coronal mass ejections (CMEs). Their solar source regions and ensuing interplanetary structures were identified and characterized as well, toward a global-scale description of their role in determining the heliosphere's conditions. Multi-wavelength images provided by the space missions SOHO, Yohkoh (only WSM), and Solar-Terrestrial Relations Observatory (STEREO; only WHI) and ground-based observatories were analyzed for coronal ejecta and their solar sources, while data registered by the Advanced Composition Explorer (ACE) spacecraft were inspected for interplanetary CMEs and magnetic clouds. Notable differences arise from the analysis of the detailed survey of events: more (fewer) ejecta during WHI (WSM), 12% (40%) were produced by active regions during WHI (WSM), and nearly no (high) deflection from the radial direction was observed during WHI (WSM). Instrumental aspects such as dissimilar resolution, cadence, and fields of view are considered in order to discern instrumentally driven disparities from inherent differences between solar minima. © 2011 Springer Science+Business Media B.V. Fil:Mandrini, C.H. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Dasso, S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00380938_v274_n1-2_p233_Cremades
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 Coronal mass ejections Interplanetary ejecta Solar activity cycle
spellingShingle	Corona Coronal mass ejections Interplanetary ejecta Solar activity cycle Cremades, H. Mandrini, C.H. Dasso, S. Coronal Transient Events During Two Solar Minima: Their Solar Source Regions and Interplanetary Counterparts
topic_facet	Corona Coronal mass ejections Interplanetary ejecta Solar activity cycle
description	In the frame of two coordinated observational and research efforts, two full solar rotations were investigated in the times of two distinct solar minima. These two campaigns were dubbed Whole Sun Month (WSM; 10 August - 8 September 1996) and Whole Heliosphere Interval (WHI; 20 March - 16 April 2008). The nearly uninterrupted gathering of solar coronal data since the beginning of the Solar and Heliospheric Observatory (SOHO) era offers the exceptional possibility of comparing two solar minima for the first time, with regard to the coronal transient aspect. This study characterizes the variety of outward-traveling transients observed in the solar corona during both time intervals, from very narrow jet-like events to coronal mass ejections (CMEs). Their solar source regions and ensuing interplanetary structures were identified and characterized as well, toward a global-scale description of their role in determining the heliosphere's conditions. Multi-wavelength images provided by the space missions SOHO, Yohkoh (only WSM), and Solar-Terrestrial Relations Observatory (STEREO; only WHI) and ground-based observatories were analyzed for coronal ejecta and their solar sources, while data registered by the Advanced Composition Explorer (ACE) spacecraft were inspected for interplanetary CMEs and magnetic clouds. Notable differences arise from the analysis of the detailed survey of events: more (fewer) ejecta during WHI (WSM), 12% (40%) were produced by active regions during WHI (WSM), and nearly no (high) deflection from the radial direction was observed during WHI (WSM). Instrumental aspects such as dissimilar resolution, cadence, and fields of view are considered in order to discern instrumentally driven disparities from inherent differences between solar minima. © 2011 Springer Science+Business Media B.V.
format	JOUR
author	Cremades, H. Mandrini, C.H. Dasso, S.
author_facet	Cremades, H. Mandrini, C.H. Dasso, S.
author_sort	Cremades, H.
title	Coronal Transient Events During Two Solar Minima: Their Solar Source Regions and Interplanetary Counterparts
title_short	Coronal Transient Events During Two Solar Minima: Their Solar Source Regions and Interplanetary Counterparts
title_full	Coronal Transient Events During Two Solar Minima: Their Solar Source Regions and Interplanetary Counterparts
title_fullStr	Coronal Transient Events During Two Solar Minima: Their Solar Source Regions and Interplanetary Counterparts
title_full_unstemmed	Coronal Transient Events During Two Solar Minima: Their Solar Source Regions and Interplanetary Counterparts
title_sort	coronal transient events during two solar minima: their solar source regions and interplanetary counterparts
url	http://hdl.handle.net/20.500.12110/paper_00380938_v274_n1-2_p233_Cremades
work_keys_str_mv	AT cremadesh coronaltransienteventsduringtwosolarminimatheirsolarsourceregionsandinterplanetarycounterparts AT mandrinich coronaltransienteventsduringtwosolarminimatheirsolarsourceregionsandinterplanetarycounterparts AT dassos coronaltransienteventsduringtwosolarminimatheirsolarsourceregionsandinterplanetarycounterparts
_version_	1782025162616471552

Coronal Transient Events During Two Solar Minima: Their Solar Source Regions and Interplanetary Counterparts

Ejemplares similares