J/ApJ/709/1238ivo://CDS.VizieR/J/ApJ/709/1238doi:10.26093/cds/vizier.17091238CDSYeates A.R.Attrill G.D.R.Nandy D.Mackay D.H.Martens P.C.H.,van Ballegooijen A.A.2012-04-18T20:25:12Z2012-04-02T12:27:02ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frthe-sunThe relative importance of different initiation mechanisms for coronal mass ejections (CMEs) on the Sun is uncertain. One possible mechanism is the loss of equilibrium of coronal magnetic flux ropes formed gradually by large-scale surface motions. In this paper, the locations of flux rope ejections in a recently developed quasi-static global evolution model are compared with observed CME source locations over a 4.5 month period in 1999. Using extreme ultraviolet data, the low-coronal source locations are determined unambiguously for 98 out of 330 CMEs. Our results suggest that while the gradual formation of magnetic flux ropes over weeks can account for many observed CMEs, especially at higher latitudes, there exists a second class of CMEs (at least half) for which dynamic active region flux emergence on shorter timescales must be the dominant factor.2010ApJ...709.1238Yhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/709/1238CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/ApJS/183/225 : A catalog of coronal "EIT wave" transients (Thompson+, 2009)J/A+A/432/1063 : Analysis of inner solar corona in Extreme-UV (Lanzafame+,J/A+A/422/337 : Solar EUV Post-Eruptive Arcades (Tripathi+, 2004)J/ApJ/543/1016 : EUV spectrum of solar active region from SERTS-97 (Brosius+J/ApJS/91/461 : EUV spectrum of solar active region (Thomas+, 1994)http://cdaw.gsfc.nasa.gov/CME_list/ : SOHO LASCO CME catalog onlinehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/709/1238https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/709/1238http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/709/1238https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/709/1238https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/709/1238http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/709/1238GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapUVdefaultJ/ApJ/709/1238/table5Low coronal source regions for LASCO CMEsf_CPA[H] H: Halo (2)meta.codecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintObsDate of the LASCO CME data (1)stime.epochnullableCPA? LASCO CME central position angledegpos.posAngintnullableWidthLASCO CME angular width in plane of skydegphys.angSize;srcintQ[1-4?] Quality of the EUV source identification (3)meta.code.qualcharb_LON? Low Coronal EUV source minimum longitudedegpos.earth.lon;stat.minintnullableB_LON? Low Coronal EUV source maximum longitudedegpos.earth.lon;stat.maxintnullableb_LAT? Low Coronal EUV source minimum latitudedegpos.earth.lat;stat.minintnullableB_LAT? Low Coronal EUV source maximum latitudedegpos.earth.lat;stat.maxintnullableQuadQuadrant of quality 3 low coronal EUV sourcemeta.codecharNotesAdditional notes (4)meta.notechar