Construct · 1 fields · 1 citations

Wouthuysen-Field effect: a standalone construct

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Wouthuysen-Fieldeffect1 CONSTRUCTWouthuysen-Field effectWOUTHUYSEN · COSMOLOGY

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Cosmology

coupling of the hydrogen 21-cm spin temperature to the gas kinetic temperature through repeated scattering of Lyman-alpha photons.

In cosmology, Wouthuysen-Field effect refers to coupling of the hydrogen 21-cm spin temperature to the gas kinetic temperature through repeated scattering of Lyman-alpha photons. This meaning comes from Wouthuysen (1952) in The Astronomical Journal.[1]

Unit
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Nearby constructs

coupling4 fields · 4 citationsjingle · one word, four constructsscattering3 fields · 4 citationsinvariant · one construct, three systemsspin4 fields · 4 citationsjingle · one word, four constructs

References

  1. Wouthuysen, S. A. (1952). On the excitation mechanism of the 21-cm (radio-frequency) interstellar hydrogen emission line. The Astronomical Journal, 57, 31. https://doi.org/10.1086/106661

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