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The electromagnetic spectrum of the Crab Nebula

Published online by Cambridge University Press:  14 August 2015

Krishna M. V. Apparao
Krishna M. V. Apparao*
Affiliation:
Smithsonian Astrophysical Observatory and Harvard College Observatory, Cambridge, Mass., U.S.A.

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The electromagnetic spectrum of the Crab Nebula has been determined experimentally in the radio, optical, and X-ray regions [1], in which it follows a power law of the type S(v) = Av−α, where S(v) is the power (in watts/m2 sec Hz), A and α are constants, and v is the frequency in Hz. Recent measurements [2–5], however, show a deviation from a power law in the microwave region (see Figure 1). In this paper, we investigate the origin of this deviation and calculate the γ-Ray spectrum due to this increase in the microwave photons via the Compton scattering from high-energy electrons.

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 37: Non-Solar X- and Gamma-Ray Astronomy , 1970 , pp. 247 - 249
Copyright
Copyright © Reidel 1970 

References

[1] For references see Shklovsky, I. S.: 1968, Supernovae, Wiley, London.Google Scholar
[2] Tolbert, C. W.: 1965, Nature 206, 1304.CrossRefGoogle Scholar
[3] Tolbert, C. W. and Straiton, A. W.: 1964, Nature 204, 1242.CrossRefGoogle Scholar
[4] Kislyakov, A. E. and Na'umov, A. I.: 1968, Soviet Astron.-AJ 11, 6.Google Scholar
[5] Beckman, J. E., Bastin, J. A., and Clegg, P. E.: 1969, Nature 221, 944.CrossRefGoogle Scholar
[6] Hobbs, R. W., Corbett, H. H., and Santini, N. J.: 1969, Astrophys. J. Letters 155, L87.CrossRefGoogle Scholar
[7] Oliver, J. P., Epstein, E. E., Schorn, R. A., and Soter, S. L.: 1967, Astron. J. 72, 314.Google Scholar
[8] Kardashev, N. S.: 1962, Soviet Astron.-AJ 6, 317.Google Scholar
[9] Gould, R. J.: 1965, Phys. Rev. Lett. 15, 577.CrossRefGoogle Scholar
[10] Fazio, G. G., Helmken, H. F., Cavrak, S. J. Jr., and Hearn, D. R.: 1968, Canadian J. Phys. 46, Part 3 (Cosmic Ray Conf. Issue), 427.CrossRefGoogle Scholar
[11] Delvaille, J. P., Albats, P., Greisen, K. I., and Ögelman, H. B.: 1968, Canadian J. Phys. 46, Part 3 (Cosmic Ray Conf. Issue), 425.CrossRefGoogle Scholar
[12] Fazio, G. G., Helmken, H. F., Rieke, G., and Weekes, T. C.: this volume, p. 192.Google Scholar
[13] Chudakov, A. E., Dadykin, V. L., Zatsepin, V. I., and Nesterova, N. M.: 1964, in Proc. Intern. Conf. Cosmic Rays, Jaipur, India, 4, 199.Google Scholar
[14] Long, C. D., McBreen, B., Porter, N. A., and Weekes, T. C.: 1965, in Proc. Intern. Conf. Cosmic Rays, London, 1, 318.Google Scholar
[15] Fegan, D. J., McBreen, B., O'Mongain, E. P., Porter, N. A., and Slevin, P. J.: 1968, Canadian J. Phys. 46, Part 3 (Cosmic Ray Conf. Issue), 433.CrossRefGoogle Scholar