J/ApJ/759/69ivo://CDS.VizieR/J/ApJ/759/69doi:10.26093/cds/vizier.17590069CDSWang L.Lin R.P.Krucker S.Mason G.M.2014-08-29T14:30:19Z2014-08-13T15:26:56ZCDS support team

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

cds-question@unistra.frthe-sunstellar-flaresWe survey the statistical properties of 1191 solar electron events observed by the WIND 3DP instrument from <1keV to >~300keV for a solar cycle (1995 through 2005). After taking into account times of high background, the corrected occurrence frequency of solar electron events versus peak flux exhibits a power-law distribution over three orders of magnitude with exponents between -1.0 and -1.6 for different years, comparable to the frequency distribution of solar proton events, microflares, and coronal mass ejections (CMEs), but significantly flatter than that of soft X-ray (SXR) flares. At 40keV (2.8keV), the integrated occurrence rate above ~0.29 (~330)/cm2/s.sr^-1^/keV near 1 AU is ~1000/year (~600/year) at solar maximum and ~35/year (~25/year) at solar minimum, about an order of magnitude larger than the observed occurrence rate. We find these events typically extend over ~45{deg} in longitude, implying the occurrence rate over the whole Sun is ~10^4^/year near solar maximum. The observed solar electron events have a 98.75% association with type III radio bursts, suggesting all type III bursts may be associated with a solar electron event. They have a close (~76%) association with the presence of low-energy (~0.02-2MeV/nucleon), ^3^He-rich (^3^He/^4^He>=0.01) ion emissions measured by the ACE ULEIS instrument. For these electron events, only ~35% are associated with a reported GOES SXR flare, but ~60% appear to be associated with a CME, with ~50% of these CMEs being narrow. These electrons are often detected down to below 1keV, indicating a source high in the corona.2012ApJ...759...69Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/759/69CatalogResearchIsServedByTAP VizieR generic servicerelated-toVI/138 : Sunspots catalogues, 1853-1870 (Casas+, 2013)J/ApJ/757/94 : Solar flares observed with GOES and AIA (Aschwanden, 2012)J/ApJ/747/L41 : Solar flares probabilities (Bloomfield+, 2012)J/ApJ/737/L35 : Pulsed Alfven waves in the solar wind (Gosling+, 2011)J/ApJ/721/901 : Solar quiescent filament channels (Su+, 2010)J/ApJ/710/1111 : Observations of interplanetary shocks (Gopalswamy+, 2010)J/ApJ/710/L58 : Coronal type II radio bursts in 2002 (Lobzin+, 2010)J/ApJ/709/1238 : Solar Coronal Mass Ejection (Yeates+, 2010)J/A+A/390/717 : Solar Veloc. of the Sun in 1989-99 (IRIS++) (Salabert+, 2002)J/A+A/375/614 : Astrolabe observations of the Sun in 1990-2000 (Noel, 2001)J/A+AS/130/233 : WATCH Solar X-Ray Burst Catalogue (Crosby+ 1998)J/A+AS/110/99 : White-light flares models (Fang+, 1995)J/A+A/304/563 : Cool X-ray flares of Sun with GOES (Phillips+, 1995)http://cdaw.gsfc.nasa.gov/CME_list/ : SOHO LASCO CME online cataloghttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/759/69https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/759/69http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/759/69https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/759/69https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/759/69http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/759/69GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/ApJ/759/69/table2The list of solar energetic electron eventsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateDate of the observationtime.epochnullableDOYDay of the yeardtime.epochintObs.hHour of electron solar injection (1)htime.epochfloatEmin[0.04/66] Lowest energykeVinstr.bandpassfloatEmax[1.1/520] Highest energykeVinstr.bandpassfloat3He/4HeHe description ("3He rich" or "not 3He rich" or "n/a")meta.notecharT-III[yes/no ] Type III event?meta.notecharT-II[yes/no ] Type II event?meta.notecharPA? Coronal mass ejection (CME) position angle (2)degpos.posAngintnullablef_PA[nha] Flag on PA: n=no event, h=halo, a=no data)meta.codecharCME-W? CME width (2)degphys.angSize;srcintnullablef_CME-W[nha] Flag on CME-W (n=no event, h=halo, a=no data)meta.codecharCME-V[46/2861]? CME speed (2)km/sphys.velocintnullablef_CME-V[na] Flag on CME-V (n=no event, a=no data)meta.codecharTimeGOES soft X-ray (SXR) start time; UT (3)time.epochnullableDur[-1429/430]? GOES SXR duration (3)mintime.intervalintnullableClassGeostationary Operational Environmental Satellite (GOES) SXR class (B1.2-X28) (3)src.classcharFlocFlare location (3)meta.notecharp10MGOES >10MeV proton event? ("no", "yes", or "no data") (4)meta.notechar