• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>PASJ: Publications of the Astronomical Society of Japan >Can Superflares Occur on Our Sun?
【24h】

Can Superflares Occur on Our Sun?

机译：耀斑会在我们的太阳上发生吗？

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

RecentobservationsofSun-likestars,similartoourSunintheirsurfacetemperature(5600a€“6000K)andslowrotation(rotationalperiod$$$$10d),usingtheKeplersatellitebyMaeharaetal.(2012,Nature,485,478)haverevealedtheexistenceofsuperflares(withenergyof10$$^{33}$$a€“10$$^{35}$$erg).Fromstatisticalanalysesofthesesuperflares,itwasfoundthatsuperflareswithenergyof10$$^{34}$$ergoccuroncein800yr,andsuperflareswith10$$^{35}$$ergoccuroncein5000yr.Inthispaper,weexaminewhethersuperflareswithenergyof10$$^{33}$$a€“10$$^{35}$$ergcouldoccuronthepresentSunthroughtheuseofsimpleorder-of-magnitudeestimatesbasedoncurrentideasrelatedtothemechanismsofthesolardynamo.Ifmagneticfluxisgeneratedbydifferentialrotationatthebaseoftheconvectionzone,asassumedintypicaldynamomodels,itispossiblethatthepresentSunwouldgeneratealargesunspotwithatotalmagneticfluxof$$sim$$2$$ imes$$10$$^{23}$$Mx($$=$$Gcm$$^{2}$$)withinonesolarcycleperiod,andleadtosuperflareswithanenergyof10$$^{34}$$erg.Tostoreatotalmagneticfluxof$$sim$$10$$^{24}$$Mx,necessaryforgenerating10$$^{35}$$ergsuperflares,itwouldtake$$sim$$40yr.HotJupitershaveoftenbeenarguedtobeanecessaryingredientforthegenerationofsuperflares,butwefoundthattheydonotplayanyessentialroleinthegenerationofmagneticfluxinthestaritself,ifweconsideronlythemagneticinteractionbetweenthestarandthehotJupiter.ThisseemstobeconsistentwithMaeharaetal.'sfindingof148superflare-generatingsolar-typestarsthatdonothaveahotJupiter-likecompanion.Altogether,oursimplecalculations,combinedwithMaeharaetal.'sanalysisofsuperflaresonSun-likestars,showthatthereisapossibilitythatsuperflaresof10$$^{34}$$ergwouldoccuroncein800yronourpresentSun.
机译：最近对太阳状恒星的观测，类似于太阳在其表面温度（5600a“ 6000K”）和慢速旋转（自转周期$ 10d）的情况，使用的是Maeharaetal的开普勒卫星。（2012年，自然，485,478）使存在的超耀斑（$ 10 $（$ 10 $ 33）的^^耀光的存在得以平均。 {35} $$ erg）。通过对这些超级耀斑的统计分析，发现超级耀斑的能量为800 $，$ 10 ^ $ {{34} $$ ergoccuronce在800yr，超级耀斑的能量为10 $$ ^^ {35} $$ ergoccuronce，在5000yr。本文中，我们检查超级耀斑是否{10}的能量为$ 10 $$ ^。 {35} $$ ergcouldoccuronthepresentSunthroughtheuseofsimpleorder-的-magnitudeestimatesbasedoncurrentideasrelatedtothemechanismsofthesolardynamo.Ifmagneticfluxisgeneratedbydifferentialrotationatthebaseoftheconvectionzone，asassumedintypicaldynamomodels，itispossiblethatthepresentSunwouldgeneratealargesunspotwithatotalmagneticfluxof $$ SIM $$ 2 $$的IME $$ 10 $$ ^ {23} $$ MX（$$ = $$ GCM $$ ^ {2} $$ ）在一个太阳周期内，并以10 $$ ^ {34} $$ erg的能量导致超耀斑。存储$$ sim $$ 10 $$ ^ {24} $$ Mx，nec的总磁通量essaryforgenerating10 $$ ^ {35} $$ ergsuperflares，itwouldtake $$ SIM $$ 40yr.HotJupitershaveoftenbeenarguedtobeanecessaryingredientforthegenerationofsuperflares，butwefoundthattheydonotplayanyessentialroleinthegenerationofmagneticfluxinthestaritself，ifweconsideronlythemagneticinteractionbetweenthestarandthehotJupiter.ThisseemstobeconsistentwithMaeharaetal.'sfindingof148superflare-generatingsolar-typestarsthatdonothaveahotJupiter-likecompanion.Altogether，oursimplecalculations，combinedwithMaeharaetal.'sanalysisofsuperflaresonSun-likestars，showthatthereisapossibilitythatsuperflaresof10 $$ ^ {34} $$ ergwouldoccuroncein800yronourpresentSun。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号