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PDF: Radiation from the Big Bang Radiation from the Big Bang Radiation ...

Download 9 times Source: www.pa.msu.edu // Topic: Astronomy File Size: 123.50 kb // Total of Page: - Page(s) Last download by 9732443408 Last download on: 1 month ago Share this info: Short Desciption: universe is 2.7K. ? Big Bang emitted black-. body radiation, which is. now 2.7 K. .... Radiation from Big Bang is. isotropic & free from seasonal. variations. Content Inside: Radiation from the Big Bang--11 April · Penzias & Wilson discover (1965) the temperature of the universe is 2.7K. Big Bang emitted blackbody radiation, which is now 2.7 K. Called Cosmic Background Radiation; Cosmic Microwave Background Radiation · · · 1 0.5 Arno Penzias & Robert Wilson discover CMB, 1965 Radiation from the Big Bang We see black-body radiation with T=2.7 K. Weins Law (week3) max = 2.7mm-K / T Wavelength [nm] è ç Energy 1. Now, 1mm, 2.7K 1 1.5 Wavelength of radiation stretches as universe expands. 1 When the distance to Coma was 150MLy, the wavelength 0.5 of the radiation was a. b. c. d. 1mm 2mm 0.5mm Information is insufficient Now, 1mm, 2.7K 0.5 1 1.5 2 · At earlier times this radiation dominated the pressure and mass. 0.5 -0.5 -1 2 -0.5 -1 Radiation from the Big Bang · · · 2. We see black-body radiation with T=2.7 K. Weins Law (week3) max = 2.7mm-K / T · · Wavelength [nm] è ç Energy Radiation from the