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Pulsar AP 2015: 21 cm Line Absorption Profile

Abstract

THE observation of the 21 cm line absorption in pulsars may lead to upper and lower limits of their distance using a galactic rotation model1–3. Knowledge of the distance of pulsars and the measure of their dispersion and absorption profiles provide information on the interstellar electron and neutral hydrogen densities4.

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ENCRENAZ, P., GUÉLIN, M. Pulsar AP 2015: 21 cm Line Absorption Profile. Nature 227, 476–477 (1970). https://doi.org/10.1038/227476a0

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