Observing the solar photosphere in white light is traditionally carried out with neutral density filters. |
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A hydrostatical pressure difference between the start from the photosphere and the landing on the photosphere is clearly impossible. |
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Prominences and plages are structures that occur above the photosphere of the Sun. |
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Typically the corona is a million times fainter than the solar surface, which is why it cannot be seen except when the photosphere is mostly extinguished. |
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While a prominence will tend to follow the magnetic field lines and loop back down to the photosphere, a flare will shoot off into space. |
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A solar flare is a more violent eruption from the photosphere that releases an enormous amount of energy. |
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Although there are no fires on the surface of the Sun, the photosphere seethes and roils, displaying the effects of the underlying convection. |
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That is equivalent to the apparent diameter of the photosphere of the largest stars seen from the solar system. |
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For this calculation, the temperature of photosphere, diameter of the stellar disc and distance of the star are required. |
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The surface of the Sun is called the photosphere, and is where energy from the core is emitted into space. |
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Randomly covering the photosphere are dark patches cooler than the rest of the surface. |
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Above the photosphere is the chromosphere, which can be compared to the Earth's upper atmosphere. |
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It is a million times fainter than the photosphere and extends millions of kilometres into space, all the way to Pluto! |
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White-light observations of the solar photosphere are a simple but important way to characterize solar activity. |
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The Sun is a quiet star when one looks at its overall emission, which is largely dominated by visible light from its photosphere. |
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The penumbra is the transition from the photosphere to the umbra. |
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Facula, in astronomy, bright granular structure on the Sun's surface that is slightly hotter or cooler than the surrounding photosphere. |
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The surface of the Sun was originally thought to be perfect and uniform, but we now know the photosphere is marked by numerous irregularly shaped dark patches called sunspots. |
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But in 1999, researchers using Yohkoh, a Japanese spacecraft, showed that certain S-shaped structures often appeared on the sun's photosphere just before a large ejection of matter. |
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That is 300 times the temperature of the photosphere. |
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The regions just below the photosphere are known as the convection zone and the radiation zone, which allow heat and energy to travel up from the core to the surface. |
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In the relatively low density of the photosphere and higher up, where atoms are only illuminated from below, the electrons tend to fall to the ground state, since excitation is low. |
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When the solar photosphere is occulted by the Moon, the layers of the Sun's atmosphere flash into prominence, and the spectrum briefly shows the bright lines produced by tenuous hot luminous gas. |
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How is this energy transported from the photosphere to the corona? |
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The various manifestations of solar activity are driven by the total amount of magnetic flux emerging through the photosphere into the chromosphere and corona, and its temporal and spatial distribution. |
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He noticed that, although coronal light had the same distribution of colours as light from the solar surface the photosphere it lacked the absorption lines observed in photospheric light. |
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Our numerical simulations model a coronal magnetic loop, which is excited by the motions of the photosphere, and in which non-linearly interacting Alfvén waves propagate. |
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The photosphere is the Sun's lower atmosphere. |
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The visible outer surface of the Sun is called the photosphere. |
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