If a white dwarf packs the mass of the Sun into a volume roughly the size of the Earth, what is the consequence for its total light output?

Answer

Its total brightness is dramatically reduced due to its tiny surface area.

Despite having an enormous surface temperature, the luminosity ($L ot sim R^2 T^4$) is minimal because the radius (R) term is tiny, resulting in a very small surface area.

If a white dwarf packs the mass of the Sun into a volume roughly the size of the Earth, what is the consequence for its total light output?

#Videos

Why Do White Dwarfs Still Radiate Heat? - Physics Frontier - YouTube

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