All Questions
Tagged with electromagnetic-spectrum plasma-physics
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How is the H II 'region' directly detectable? By Compton or Thomson free-particle scattering? At what wavelengths?
The Wikipedia page on H II regions says that they are 'indirectly' detectable by the detection of doubly-ionized oxygen atoms mixed in.... (I am presuming atoms, not diatomic molecules...)
But are ...
- 5,307
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Do free protons and neutrons absorb much radiation? To affect astronomers' observations? If so, at what wavelength(s)?
In a plasma, or wherever, do the completely ionized nuclei commonly absorb much EM radiation? Or any free neutrons or protons? Can astronomers detect this? Enough so that astronomers take it into ...
- 5,307