Nature 217, 32 - 34 (06 January 1968); doi:10.1038/217032a0

Detection of an Anisotropic Soft X-ray Background Flux

C. S. BOWYER, G. B. FIELD & J. E. MACK

Department of Astronomy and Space Science Laboratory, University of California, Berkeley

The cosmic X-ray background has been found to be anisotropic. It is interpreted as being made up of two components: an isotropic background, possibly of extragalactic origin, and an anomalous emission, perhaps located within the Galaxy.

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