Questions tagged [photosphere]

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Density of a sunspot compared to the surrounding photosphere?

Is the density of a sunspot different by more than a factor of ten compared to the area surrounding the sunspot?
5
votes
1answer
98 views

What class of elements are providing the many electrons needed to make the H- ion?

Continuous absorption by the H- ion reaches its maximum in the cool atmospheric layers of G stars. At these temperatures, most of the hydrogen atoms are neutral; but what class of elements is ...
8
votes
2answers
402 views

What does this “web on the surface of the Sun” image reflect? What does 789 nm show us?

What is this web on the surface of the Sun? has got me thinking. This is probably not a normal color photo. The cooler areas are really dark! update: Comments point out The NSO press release says ...
3
votes
1answer
228 views

At what depth below the Sun's surface does the density reach that of water?

I'd like to write a short supplementary answer to A probe floating in Sun's surface but in order to do so I need to know at roughly what depth relative to the Sun's surface the mass density reaches 1 ...
0
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2answers
224 views

What is the density profile within the Sun's photosphere? Which one of these is wrong?

The Sun's photosphere contains the Sun's surface as defined by opacity = 2/3 point. I'd like to see the profile of mass density from bottom to top of the photosphere. I did a quick search and got ...