| 41. | TSI is higher at solar maximum, even though sunspots are darker ( cooler ) than the average photosphere.
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| 42. | The surface is thus very different from the relatively quiescent photosphere of a pre-main-sequence stars.
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| 43. | This hypothetical chemical reservoir is thought to have been similar in composition to the current photosphere of the Sun.
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| 44. | Aditya-L1 with additional experiments can now provide observations of Sun's Photosphere, Chromosphere and corona.
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| 45. | The emission line spectrum is produced in the dense stellar wind and little is known about the underlying photosphere.
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| 46. | Therefore, the photosphere is typically used to describe the Sun's or another star's visual surface.
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| 47. | With all these assumptions in place, the star emits black-body radiation at the temperature of the photosphere.
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| 48. | The Sun's photosphere is observed continuously for activity that can be the precursors to solar flares and CMEs.
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| 49. | The metallicity is typically determined by measuring the abundance of iron in the photosphere relative to the abundance of hydrogen.
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| 50. | Sunspots are cooler than the rest of the photosphere, with effective temperatures of about 4000�C ( about 7000�F ).
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