The corona in x ray light all hot objects emit electromagnetic waves for example visible light is emitted by the hot filament inside a lightbulb.

The solar corona produces more x rays than visible light. The corona is 10 12 times as dense as the photosphere and so produces about one millionth as much visible light. The hotter the object the shorter the wavelength which is why the corona emits soft x rays whose waves are much shorter than those of visible or ultra violet light. The solar corona in white light and x rays. The photosphere s average temperature is around 5 800 kelvin compared to the corona s 1 to 3 million kelvin.

Actual thermal emission from the corona consists of some 28 visible spectral peaks see the answer by rob jeffries for details and more peaks in the uv. The solar corona produces a lot more x rays than it does visible light. If 2 00 kg of mass is converted to energy how much energy will be produced. 6 00 108 j 6 00 104.

But the above is not really relevant to the solar corona. This is a first indication that the global large scale. Hence we must wait for a total solar eclipse to glimpse it with the naked eye. The solar corona is much cooler than the sun s surface.

I believe the corona is the surface in which case this is false the surface of the sun is about 3 000 k which means it emits mostly visible light green in the peak right smack. Instead it s the light from the solar photosphere scattered by the corona. The color of the corona visible to an observer on the earth is mostly not the thermal emission from the coronal matter. The sun s corona is much hotter by a factor from 150 to 450 than the visible surface of the sun.

The solar corona is much cooler than the sun s surface. Hence we must wait for a total solar eclipse to glimpse it with the naked eye. The morphology and brightness of active regions as revealed by x ray images of the solar disk taken on the same days red orange yellow images superimposed on the center of the coronameter images show more dramatic differences. They don t influence the color of the corona as much as the scattered light.

• Tim Allen Hardwood