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Origins of cosmic rays

OCT 01, 1971
Each new means of detection shows cosmic rays to be more complex than we had thought, so that more and more bravery is demanded of astrophysicists who propose sources for these rays.

DOI: 10.1063/1.3022382

Ramanath Cowsik
P. Buford Price

Laymen are probably more aware of the spectacular recent discoveries in astrophysics than in any other science. Newspapers and magazines have conditioned their readers to accept the reality of quasars, pulsars, black holes, gravitational waves, 2.7‐K blackbody radiation, interstellar molecules, solar wind and ancient moon rocks, to name only a few currently fashionable topics.

References

  1. 1. P. Meyer, Ann. Rev. Astron. Astrophys. 7, 1 (1969); https://doi.org/ARAAAJ
    M. M. Shapiro, R. Silberberg, Ann. Rev. Nucl. Sci. 20, 323 (1970); https://doi.org/ARNUA8
    V. L. Ginzburg, Scientific American, February, 1969, page 51.

  2. 2. M. Wahlig, A. Buffington, L. H. Smith, G. Smoot, L. W. Alvarez, Proceedings of the Twelfth International Conference on Cosmic Rays, Hobart, Tasmania, 1971 (to be published).

  3. 3. S. Biswas, C. E. Fichtel, Space Sci. Rev. 4, 709 (1965); https://doi.org/SPSRA4
    N. Durgaprasad, C. E. Fichtel, D. E. Guss, D. V. Reames, Astrophys. J. 154, 307 (1968); https://doi.org/ASJOAB
    D. L. Bertsch, C. E. Fichtel, D. V. Reames, Astrophys. J. 157, L54 (1969).https://doi.org/ASJOAB

  4. 4. P. B. Price, J. D. Sullivan, Proceedings of the Twelfth International Conference on Cosmic Rays, Hobart, Tasmania, 1971 (to be published).

  5. 5. P. B. Price, I. Hutcheon, R. Cowsik, D. J. Barber, Phys. Rev. Lett. 26, 916 (1971).https://doi.org/PRLTAO

  6. 6. P. H. Fowler, R. A. Adams, V. G. Cowen, J. M. Kidd, Proc. Roy. Soc. A301, 39 (1967);
    P. H. Fowler, V. M. Clapham, V. G. Cowen, J. M. Kidd, R. T. Moses, Proc. Roy. Soc. A318, 1 (1970).

  7. 7. P. B. Price, P. H. Fowler, J. M. Kidd, E. J. Kobetich, R. L. Fleischer, G. E. Nichols, Phys. Rev. D3, 815 (1971);
    G. E. Blanford, M. W. Friedlander, J. Klarmann, R. M. Walker, J. P. Wefel, W. C. Wells, Acta Physica Acad. Sci. Hungaricae 29, Suppl. 1, 423 (1970);
    D. O’Sullivan, P. B. Price, E. K. Shirk, P. H. Fowler, J. M. Kidd, E. J. Kobetich, R. Thorne, Phys. Rev. Lett. 26, 463 (1971).https://doi.org/PRLTAO

  8. 8. E. J. Kobetich, P. B. Price, E. K. Shirk, R. D. Eandi, W. Z. Osborne, L. S. Pinsky, R. B. Rushing, Proceedings of the Twelfth International Conference on Cosmic Rays, Hobart, Tasmania, 1971 (to be published).

  9. 9. W. D. Myers, W. J. Swiatecki, Nucl. Phys. 81, 1 (1966); https://doi.org/NUPHA7
    D. N. Schramm, W. A. Fowler, Nature 231, 103 (1971); https://doi.org/NATUAS
    S. G. Nilsson, S. G. Thompson, C. F. Tsang, Phys. Lett. 28B, 458 (1969).

  10. 10. K. C. Anand, R. R. Daniel, S. A. Stephens, Proc. Indian Acad. Sci. 67, 267 (1968); https://doi.org/PISAA7
    W. R. Webber, Australian J. Phys. 21, 845 (1968).

  11. 11. D. ter Haar, Rev. Mod. Phys. 22, 119 (1950); https://doi.org/RMPHAT
    I. S. Shklovsky, Dokl Acad. Nauk SSSR 90, 983 (1953);
    V. L. Ginzburg, Usp. Fiz. Nauk SSR 51, 343 (1953);
    S. Hayakawa, Prog. Theoret. Phys. 15, 111 (1956).https://doi.org/PTPKAV

  12. 12. S. A. Colgate, M. H. Johnson, Phys. Rev. Lett. 5, 235 (1960).https://doi.org/PRLTAO

  13. 13. J. E. Gunn, J. P. Ostriker, Phys. Rev. Lett. 22, 728 (1969); https://doi.org/PRLTAO
    P. Goldreich, W. Julian, Astrophys. J. 157, 869 (1969).https://doi.org/ASJOAB

  14. 14. J. C. Kemp, J. B. Swedlund, J. D. Landstreet, J. R. P. Angel, Astrophys. J. 161, L 77 (1970);
    J. R. P. Angel, J. D. Landstreet, Astrophys. J. 164, L15 (1971); https://doi.org/ASJOAB
    J. D. Landstreet, J. R. P. Angel, Astrophys. J. 165, L67 (1971).https://doi.org/ASJOAB

  15. 15. J. Ostriker, Acta Physica Acad. Sci. Hungaricae 29, Suppl. 1, 69 (1970).

  16. 16. G. A. Wegner, PhD thesis, University of Washington, 1971.

  17. 17. R. L. Fleischer, P. B. Price, R. M. Walker, Ann. Rev. Nucl. Sci. 15, 1 (1965); https://doi.org/ARNUA8
    Scientific American, June, 1969, page 30;
    P. B. Price, R. L. Fleischer, Ann. Rev. Nucl. Sci. 21, December 1971.

More about the Authors

Ramanath Cowsik. University of California, Berkeley.

P. Buford Price. University of California, Berkeley.

This Content Appeared In
pt-cover_1971_10.jpeg

Volume 24, Number 10

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