XRay

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X

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X-Rays

Above left, our galaxy in X-rays, above, a supernova

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The Observatory

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Yohkoh SXT & Team

Specs

1.54m focal length provides images from the .25 to 4.5 keV on a 1024x1024 cdc detector

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Yohkoh Assembly

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http://www.sciamarchive.org/qpdf.cfm?ArticleID_CHAR=275CD5E3-0A46-47CE-85FE-83E874D98BB

Yohkoh X-Ray Pictures

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The Corona

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Active Region

Caused by strong magnetic fields that may span up to 500,000 square kilometers

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Arcade of loops

“An "arcade" is a system of magnetic loops organized into an elongated cylindrical formation. Often such an arcade will result from a slowly-developing solar flare or a coronal mass ejection (or both). The bright arcade may persist for days or longer.”

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X-Ray Bright Points

These occur anywhere on the Sun at opposition of the active regions.

Caused by magnetic fields that are sucked down into the photosphere

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Corona Hole

unipolar magnetic fields

high-speed solar wind streams originate in coronal holes

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Interconnecting loops

large-scale magnetic loops connect two active regions

"emerging flux": magnetic loops push their way through the photosphere and appear in the corona

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Streamer

The result of two opposed arcades resulting in explosions of x-rays from the sun

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The MAXIM

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Interferometry