J/MNRAS/505/L79ivo://CDS.VizieR/J/MNRAS/505/L79doi:10.26093/cds/vizier.75059079CDSYan Y.He H.Li C.Esamdin A.Tan B. L.Zhang L. Y.Wang H.2024-08-21T20:18:08Z2021-06-23T15:49:44ZCDS support team

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

cds-question@unistra.frstellar-flaresg-starsUsing the short-cadence data (1-min interval) of the Kepler space telescope, we conducted a statistical analysis for the characteristic time of stellar flares on Sun-like stars (SLS). Akin to solar flares, stellar flares show rise and decay light-curve profiles, which reflect the two distinct phases (rise phase and decay phase) of the flare process. We derived characteristic times of the two phases for the stellar flares of SLS, resulting in a median rise time of about 5.9min and a median decay time of 22.6min. It is found that both the rise time and the decay time of the stellar flares follow a lognormal distribution. The peak positions of the lognormal distributions for flare rise time and decay time are 3.5min and 14.8min, respectively. These time values for stellar flares are similar to the time-scale of solar flares, which supports the idea that stellar flares and solar flares have the same physical mechanism. The statistical results obtained in this work for SLS can be a benchmark of flare characteristic times when comparing with other types of stars.2021MNRAS.505L..79Yhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/505/L79CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/133 : Kepler Input Catalog (Kepler Mission Team, 2009)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/505/L79https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/505/L79http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/505/L79https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/505/L79https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/505/L79http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/505/L79GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/505/L79/stars (Table of star samples)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/505/L79/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/505/L79/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/505/L79/stars?GETtext/xml+votable180.050000true291.033694736.77104470.0055555555555555566/14567 14583 14744 14765 14781 14783 14923 14929 14931 14958-14959 15044 15112-15113 15120 15133 15142-15143https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/505/L79?format=asciidefaultJ/MNRAS/505/L79/starsTable of star samplesKICKepler IDmeta.id;meta.mainintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintkepmag[7.397/11.662] Kepler magnitudemagphot.mag;em.optfloatTeff[5607/5987] Effective temperatureKphys.temperature.effectiveintlogg[4.053/4.802] Surface gravitylog(cm.s**-2)phys.gravityfloatNumFlare[1/39] Number of flaresmeta.numberintSimbadSimbad column added by the CDSmeta.ref.urlchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/MNRAS/505/L79/flaresTable of flare samplesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNo[1/184] Serial Number of flaresmeta.idintKICKepler IDmeta.id;meta.maininttstartStart time of flaredtime.epochdoubletpeakPeak time of flaredtime.epochdoubletendEnd time of flaredtime.epochdoubleTrise[1.0/152.0] Rise time of flaremintime.epochfloatTdecay[4.9/216.8] Decay time of flaremintime.intervalfloat