共查询到20条相似文献,搜索用时 15 毫秒
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1 IntroductionThemagneticfieldandmaterialmotionhavealwaysbeenthepointstowhichcloseatteneionispaidinthestudyofsolarflareprocess.Especiallythetwistingenergystorgeprocessisaprob lemthatauthorsofmanyflaretheoriesandmodelshopetoresolve .Gold&Holye ( 1 96 0 ) pres… 相似文献
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《天文研究与技术》1999,(Z1)
1 IntroductionArarelargeTypeⅣmicrowaveburstwasobservedatYunnanobservatorywithPhoenixⅡMicrowaveSpectrometeratthreefrequencies ( 1 42 ,2 84and 4 0 0GHz)from 0 8h31 mto 0 9h41 mUTonDecember 1 6 ,1 988.ThisrarelargeTypeⅣμburstappearedovertheactiveregionNOAA/USAF 5 2 78,comingfroma… 相似文献
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1 IntroductionThesolaractivecycleisusuallydescribedwiththerelativesunspotnumbers.Analysesofhis toricaldataontherelativesunspotnumbershaverevealedawealthofinformationaboutthesolaractivecycle (HongQinfang 1 990 ,1 994;ZhongShuhua 1 991 ,1 995 ) .Theso called 1 1 yearpe rio… 相似文献
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Qian Shengbang 《天文研究与技术》1999,(Z1)
1 IntroductionCKBoowasdiscoveredandconfirmedtobeacontactbinarybyBond ( 1 975 ) .Afteritsdis coverythesystemisobservedfrequently (e .g .Aslan ,1 978;AslanandDerman ,1 986 :PajdoszandZola ,1 987;Krzesinskietal.,1 991andJiaetal.,1 992 ) .Asreportedbyseveralauthors,thelightcurveofthesy… 相似文献
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1 IntroductionTheLyman breaktechnique (e .g .Steidel,Pettini&Hamilton 1 995 )hasnowbeenprovedverysuccessfulinfindinglargenumbersofstarforminggalaxiesatredshiftz~ 3(e .g .Steideletal.1 996 ,1 999b) .TheobservednumberdensityandclusteringpropertiesofLyman breakgalax ies (her… 相似文献
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《天文研究与技术》1999,(Z1)
1 IntroductionThemolecularradiationofC18O(J =1 - 0 )intheCepheusChasbeenobserved (Yuetal.1 996 ) .Themulti corestructurewasobtained ,i.e.therearethreecoresofC18O(J =1 - 0 )inCepheusC ,whicharerepresentbya,b ,andc (Yuetal.1 996 ) .Inordertostudythemulti corestructureofC18O(J =1 - 0 )int… 相似文献
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GuZhennian 《天文研究与技术》1999,(Z1)
1 IntroductionTheearthquakeinearthproducesaglobalstaticdisplacementfieldbythedislocation .Thisdisplacementfieldinturnchangestheearth’sinertiatensor,henceexcitingthevariationofbothpolarmotionandlengthofday .Recently ,Chaoetal( 1 995 )havecomputedchangesofspin… 相似文献