Do Coronal Holes and Sunspots Represent the Same Phenomenon?

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Homework Statement


Are coronal holes and sunspots the same things?


Homework Equations





The Attempt at a Solution

 
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Coronal holes are the darker spots when viewed on a x ray picture, I've been doing some reading and it says on many websites that coronal holes create CME but it doesn't say anything about coronal mass ejection and sunspots
 
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http://en.wikipedia.org/wiki/Coronal_hole

http://en.wikipedia.org/wiki/Sunspot

http://www.daviddarling.info/encyclopedia/C/coronal_hole.html
Sunspots are related to lower activity of convection in the sun's photosphere due to an increased magnetic activity. Coronal holes are areas in the sun's corona which are colder and has lower density.

Coronal holes are related to solar wind, and there is some correlation between coronal holes and sun spots, but they are not the same phenomena.
 
Hi, I had an exam and I completely messed up a problem. Especially one part which was necessary for the rest of the problem. Basically, I have a wormhole metric: $$(ds)^2 = -(dt)^2 + (dr)^2 + (r^2 + b^2)( (d\theta)^2 + sin^2 \theta (d\phi)^2 )$$ Where ##b=1## with an orbit only in the equatorial plane. We also know from the question that the orbit must satisfy this relationship: $$\varepsilon = \frac{1}{2} (\frac{dr}{d\tau})^2 + V_{eff}(r)$$ Ultimately, I was tasked to find the initial...
The value of H equals ## 10^{3}## in natural units, According to : https://en.wikipedia.org/wiki/Natural_units, ## t \sim 10^{-21} sec = 10^{21} Hz ##, and since ## \text{GeV} \sim 10^{24} \text{Hz } ##, ## GeV \sim 10^{24} \times 10^{-21} = 10^3 ## in natural units. So is this conversion correct? Also in the above formula, can I convert H to that natural units , since it’s a constant, while keeping k in Hz ?
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