Beginner’s Guide to Synthesizing Noisy Interferometer Data
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چکیده
TA(ν) has little to do with the radiation temperature of the source, which is not restricted to have a thermal spectrum. It is more accurately a noise temperature. If one were to place a telescope or feed and detector with small bandwidth ∆ν above the atmosphere and measure power Pν , one could replace that whole system with a resistor at temperature TA(ν), and measure the same power. Similarly, the brightness temperature Tatm of the atmosphere at the observing frequency ν is not necessarily the actual kinetic temperature of the atmosphere TK,atm.
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تاریخ انتشار 2010