Astronomy Hypertext_ Structure of the Solar Chromosphere

Astronomy Hypertext_ Structure of the Solar Chromosphere -...

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Unformatted text preview: 1/15/12 Astronomy Hypertext: Structure of the Solar Chromosphere As tronom H perte t Structure of the Solar Chromosphere Lat est Modif icat ion: Jul 24, 2002 The Chromos phe ric Spe ctrum D 2000 S, , ) M ch omo phe e, , M ( ' .T B .P , 100,000 . F , ' , pec fl a h m. I .M , .W ?T -- 30,000 K ' -- .N 10,000 K. A 20,000 K. F . Chromos phe ric Structure C , .A , - , pec ohel i og aph, , K .S pec ohel i og am, , K . T .P , .B , S' . P S .B .H , , , physics.gmu.edu/~jevans/astr103/ /sun_atmosphereChromosphere.html pl age , 10 1/2 1/15/12 Astronomy Hypertext: Structure of the Solar Chromosphere n po g o p l ing belo hem. Plage a e nea l al a fo nd abo e egion in he pho o phe e in hich a ong magne ic field e i , and he al a appea befo e he po fo m. Thei al life pan i abo 40 o 50 da , d ing hich e e al po g o p o none a all ma fo m. The plage a ea do no look he ame in he ed h d ogen alpha line and in he iole calci m K line, b he ob io l ma k he ame gene al egion of he ch omo phe e. In a iole calci m K line pec oheliog am one ee a ne o k of b igh ga o nding da k cell in addi ion o he la ge plage . Thi chromospheri c net ork con i e he bo nda ie of la gecale con ec i e cell , kno n a supergranul es, hich a e een a Dopple hif in pho o phe ic pic e . (S pe g an le de i e hei name beca e of hei e emblance o con ec i e mo ion and he fac ha he a e picall an o de of magni de la ge han g an le ; be ond hei name , g an le and pe g an le ha e li le in common.) Appa en l he ch omo phe ic ne o k i he loc of e in en e and highl locali ed magne ic field ha a e concen a ed on he bo nda ie of he pe g an le cell b he mo ion of ga . In ho - e po e pec oheliog am , he ch omo phe e appea ippled i h a m iad of je like pike of ga , called spi cul es. Spic le i e apidl f om he ch omo phe ic ne o k, a aining pical heigh of 10,000 km, and hen he fade a a o collap e in e e al min e . A an in an , 250,000 of hem ma co e a fe pe cen of he S n' face. The oo o line he bo nda ie of he pe g an le cell . Red h d ogen alpha line pec oheliog am con ain ho da k fea e , like blade of g a , ha a e ho gh o be pic le o lining he b igh in e io of pe g an le cell . Sk lab pho og aph gge ha he ch omo phe e ma ha e g an lelike fea e m ch la ge han ho e ob e ed in he pho o phe e. Cop right 1995 J. C. Ev ans Ph sics & Ast ronom Depart ment , George Mason Univ ersit Maint ained b J. C. Ev ans; j ev [email protected] physics.gmu.edu/~jevans/astr103/ /sun_atmosphereChromosphere.html 2/2 ...
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