Search for 21-Centimeter Radiation near Cosmic X-Ray Sources

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Science  27 Jan 1967:
Vol. 155, Issue 3761, pp. 448-449
DOI: 10.1126/science.155.3761.448


A search was made for 21-centimeter wavelength radiation in the regions of seven of the cosmic x-ray sources. No new sources with flux densities greater than 5.5 flux units were found.