Coronal temperature

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Coronal temperature

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1richardbsmith
Editat: ag. 25, 2009, 8:10pm

My understanding is that solar coronal temperatures are millions of degrees, much hotter than the photospere. This is known from the high ionization apparent in the spectral analysis of the corona.

The text I am reading Exploring the Cosmos cites the origin of this high coronal heat as the energy from sound waves in the chromosphere.

That seems extraordinary to me that such heat should be produced by sound waves. Any clarification of this is greatly appreciated.

2legallypuzzled
ag. 25, 2009, 8:10pm

Just last week, scientists "solved" the puzzle by discovering nanoflares.

http://www.scientificamerican.com/article.cfm?id=mystery-of-suns-corona-solved-2...

3richardbsmith
ag. 25, 2009, 8:45pm

Very interesting and helpful article. Thanks for the link. Even with the nanoflares it seems difficult to explain the sustained temperature difference. The sound wave cause was more so. The text I am reading is over 30 years old, but despite the age it has helped me more than others of more recent publication.

And the Skymania site is a terrific resource that I had not known of.

I'm glad I posted the question.