Pressure broadening of oxygen and its implications for cosmic background measurements

Details Pressure broadening of oxygen and its implications for cosmic background measurements Pressure broadening of oxygen and its implications for cosmic background measurements

Aug 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...248l..49p&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 248, Aug. 15, 1981, p. L49-L51.

Astronomy and Astrophysics

Astrophysics

17

Background Radiation, Cosmic Rays, Line Spectra, Oxygen Spectra, Pressure Broadening, Temperature Dependence, Mathematical Models, Molecular Rotation, Nitrogen, Spectrum Analysis

Scientific paper

The pressure broadening of oxygen transitions at 119 and 425 GHz have been measured in the laboratory for nitrogen and oxygen broadening as a function of temperature. The measured values are significantly different from estimates used by Woody and Richards to obtain a secondary calibration in their cosmic background measurements. The effect of the new determination is to move the calibrated cosmic background further from a Planck function.

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