Accession Number ADA569475
Title Three-Dimensional Properties of Coronal Mass Ejections from STEREO/SECCHI Observations.
Publication Date 2012
Media Count 20p
Personal Author A. Vourlidas E. Bosman G. Nistico R. A. Howard V. Bothmer
Abstract We identify 565 coronal mass ejections (CMEs) between January 2007 and December 2010 in observations from the twin STEREO/SECCHI/COR2 coronagraphs aboard the STEREO mission. Our list is in full agreement with the corresponding SOHO/LASCO CME Catalog for events with angular widths of 45 deg and up. The monthly event rates behave similarly to sunspot rates showing a three- to fourfold rise between September 2009 and March 2010. We select 51 events with well-defined white-light structure and model them as three-dimensional (3D) flux ropes using a forwardmodeling technique developed by Thernisien, Howard and Vourlidas (Astrophys. J. 652, 763 - 773, 2006). We derive their 3D properties and identify their source regions. We find that the majority of the CME flux ropes (82%) lie within 30 deg of the solar equator. Also 82% of the events are displaced from their source region, to a lower latitude, by 25 deg or less. These findings provide strong support for the deflection of CMEs towards the solar equator reported in earlier observation.
Keywords Coronal mass ejections
Deflection
Flux(Rate)
Latitude
Missions
Reprints
Three dimensional


 
Source Agency Non Paid ADAS
NTIS Subject Category 54C - Astrophysics
Corporate Author Naval Research Lab., Washington, DC. Space Science Div.
Document Type Journal article
Title Note Journal article.
NTIS Issue Number 1313
Contract Number N/A

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