Suppose you make a 10 hour broadband observation at wavelength 1 cm of the therm

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Suppose you make a 10 hour broadband observation at wavelength 1 cm of the thermal emission from Jupiter using the Green Bank Telescope (GBT), at a time when Jupiter makes its closest approach (4.2 Au) to Earth. With a diameter of 100 m, the GBT is the largest fully storable radio telescope in the world. Jupiter's radius is 71400 km and its temperature is 122 K. Approximating Jupiter as a blackbody, find the specific intensity. (Remember to include the units in your answer.) Is the Rayleigh-Jeans approximation approximate? What is the solid angle subtended by Jupiter?

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