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HEAO 1 observations of high-energy X rays from 3C273

Nature volume 278, pages 234–235 (1979)Cite this article

Abstract

THE first detection of high-energy (13–120 keV) X rays from the vicinity of the quasar 3C273 is reported here. This object is one of three quasars associated with X-ray sources1–3. Low energy (2–10 keV) X rays3–5 and γ rays (50–500 MeV)6 have been previously observed.

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Author information

Author notes

  1. B. A. COOKE

    Present address: X-Ray Astronomy Group, Physics Department, University of Leicester, Leicester, UK

  2. A. SCHEEPMAKER

    Present address: Cosmic Ray Working Group, Leiden, The Netherlands

Authors and Affiliations

  1. Department of Physics and Center for Space Research, Massachusetts Institute of Technology, Cambridge, Massachusetts, 02139

    F. A. PRIMINI, B. A. COOKE, C. A. DOBSON, S. K. HOWE, A. SCHEEPMAKER, W. A. WHEATON & W. H. G. LEWIN

  2. Physics Department, University of California at San Diego, La Jolla, California, 92093

    W. A. BAITY, D. E. GRUBER, J. L. MATTESON & L. E. PETERSON

Authors
  1. F. A. PRIMINI
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  2. B. A. COOKE
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  3. C. A. DOBSON
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  4. S. K. HOWE
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  5. A. SCHEEPMAKER
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  6. W. A. WHEATON
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  7. W. H. G. LEWIN
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  8. W. A. BAITY
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  9. D. E. GRUBER
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  10. J. L. MATTESON
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  11. L. E. PETERSON
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PRIMINI, F., COOKE, B., DOBSON, C. et al. HEAO 1 observations of high-energy X rays from 3C273. Nature 278, 234–235 (1979). https://doi.org/10.1038/278234a0

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