Astronomy Hypertext_ Structure of the Solar Photosphere

Astronomy Hypertext_ Structure of the Solar Photosphere -...

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Unformatted text preview: 1/15/12 Astronomy Hypertext: Structure of the Solar Photosphere As tronom H perte t Structure of the Solar Photosphere Lat est Modif icat ion: Jul 24, 2002 I , .T S, , .B , , S, .H , S .E .H , , S, , , .L S' .T S . Gene al P ope i e of he S n Limb Darke ning T pho o phe e S .T K .T 500, K .P S .H , , .T 6000 , . physics.gmu.edu/~jevans/astr103/ /sun_atmospherePhotosphere.html 1/3 1/15/12 Astronomy Hypertext: Structure of the Solar Photosphere The Photos phe ric Spe ctrum The phot ospheri c spect rum i a ab i ec c ai i g e 25,000 ab i ie. Photos phe ric Granule s E e i h g a h f he a h he e a e i hi e igh a be f fea e a e e ide . We ha e a ead ed ha he h he e da e a d he i b; ea he i b e ca a ee b igh a che ca ed facul ae. A d i high- e i hi e- igh h g a h , e ca ee ha he e i e di i c e ed a a i e b a , b igh fea e e a a ed b da a e ca ed granul es. Re a ab c ea ic e f he a face i a a e e g h a ge ha e bee ade b a ee c e ed i he Sk lab a i . Fi e de ai he face a e b ed b he Ea h' a he e a he a i de ha he a i a bi i g. S ch high- e i h g a hic die e ea a i f b igh g a e i h da i e g a a a e ; he e gi e he face a h e c bed a ea a ce. Ti e e e ce f h g a h h g a e f i g, di a ea i g, a d e- f i g i c c e a i g e e a i e . A a gi e i e he h e h he e i b e i be e ha 4 i i g a e , each cc i g gh 1 i i 2 f he face. Ob i he h he e i a if a e f ga ; he e e a e f he h he e a i de h b a a e a ac he face f he S . The g a e a e ce f ga i h cha ac e i ic dia e e f 1000 a d ife i e f e e a i e .F he b igh ce e f he g a e he da e i e g a a egi , he b igh e a ia i c e d a e e a e diffe e ce f ab 200 K. Ph he ic g a e a e a f f c ec i e i g f he eig f ab e c ec i e e e e f he h drogen convect i on one be he h he e. A e ide ce f hi c ec i e e cha ge, ec a i e f he b igh ce e a e D e - hif ed a d he b e (c i g a d )a d h ef he da i e g a a egi a e hif ed a d he ed ( i ga a f ). The e D e hif i dica e ha he b igh ce e a e h i i g ga i g a a fe e h f a i e e e ec d ha adia e i e ce e e g a d he f he c i i g ga i he da i e g a a a e . Os cillator M otions I 1960 e ica ci a i e e de ec ed i a d ab e he a g a a i hich e a e i d fa e ac 5 i e i h e ci ie f ab 0.5 / . Th he a e ab e he h d ge c ec i eae i g a dd i h e ec he ea ii f he h he e a d ch he e. The ica e c i i he de f 50 100 . The i ee be ga i ed e a fe h a d i e e a d ha bee e ed c e a ea a a ge a 50,000 , i h gh - hi d f he a face e e ie ci g ci a i a a gi e e . I 1984, he S ' c e e a eighb , A ha Ce a i, a a h be a de g i g 5- i e ci a i . I a ea ha he 5- i e ci a i i b e e e e i a a ge f ci a i , i h a 160- i e ci a i a he he e e e. Th he S ie ch i e a b f ge a i ; he c e e ce f he e ci a i i be a e ae. physics.gmu.edu/~jevans/astr103/ /sun_atmospherePhotosphere.html 2/3 1/15/12 Astronomy Hypertext: Structure of the Solar Photosphere 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_atmospherePhotosphere.html 3/3 ...
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This note was uploaded on 01/16/2012 for the course ASTR 103 taught by Professor Staff during the Spring '08 term at George Mason.

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