Abstract
IT has been suggested1 that the red-shift Z = 1.95 observed in quasars has special significance. We have therefore attempted to detect absorption in the ground state hyperfine transition of neutral hydrogen atoms, normally at 21 cm, red-shifted to 62 cm wavelength of the continuum flux of the quasar 3C 191.
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References
Burbidge, G., and Burbidge, M., Quasi Stellar Objects (W. H. Freeman and Company, 1967).
Bahcall, J. N., Sargent, W. L. W., and Schmidt, M., Astrophys. J. Lett., 149, 52 (1967).
Roeder, R. C., and Verreault, R. T., Astrophys. J., 155, 1047 (1969).
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SHUTER, W., GOWER, J. Search for Red-shifted Neutral Hydrogen Absorption in 3C 191. Nature 223, 1046 (1969). https://doi.org/10.1038/2231046a0
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DOI: https://doi.org/10.1038/2231046a0
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