Microwave/Submillimeter Astronomy

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Presentation transcript:

Microwave/Submillimeter Astronomy Most astronomers use the term “submillimeter”

Range can vary . . . C λ f 300 MHz to 300 GHz What are these wavelengths? c = λf . . . C λ f

From NASA – Tour of the EMS https://www.youtube.com/watch?v=UZeBzTI5Omk

Some General Notes . . . Microwave Region is broad and vague Most well known in astronomy is the CMB 160GHz (1.9 mm) The short microwaves – millimeter and below - is rich for astrophysics This range is basically the study of “cold” stuff! Galaxy formation and evolution Stellar and planetary system birth Composition of solar system atmospheres Cosmic Microwave Background (CMB) Molecular gas clouds

How do you detect these waves? At the longer end of this range, the waves can be detected with radio telescopes At the shorter, or submillimeter end, the waves can be detected similar to infrared. Then moisture in the atmosphere becomes a problem

Two fun things to do: Calculating the wavelength of your remote key fob 315 MHz Do you know how to extend the range? Speed of light using microwaves