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Diffuse Background of Energetic X-Rays∗

Published online by Cambridge University Press:  14 August 2015

Yash Pal
Yash Pal*
Affiliation:
Tata Institute of Fundamental Research, Bombay 5, India

Abstract

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The experimental situation in regard to the extra-galactic diffuse background of photons of energy above 30 keV is critically reviewed in the light of discussions at this Symposium.

There seems to be some doubt about the spectral break at 40 keV. There is an indication of a small bump around 2 MeV and of a shoulder around 20 MeV. The spectrum below 1 MeV (down to 30 keV) can perhaps be represented as 25 (E/1 keV)–2.1. This spectrum also gives, roughly, the OSO III upper limit at 100 MeV, though it lies well below the two bumps mentioned above. A good deal of the discussion centres on the problem of backgrounds in different types of experiments to measure the diffuse X- and γ-ray fluxes.

Type
Part V: Panel Discussions
Information
Symposium - International Astronomical Union , Volume 55: X- and Gamma-Ray Astronomy , 1973 , pp. 279 - 302
Copyright
Copyright © Reidel 1973 

References

Beuermann, K. P.: 1971, preprint.Google Scholar
Bleeker, J. A. M. and Deerenberg, A. J. M.: 1970, Astrophys. J. 159, 215.CrossRefGoogle Scholar
Brecher, K. and Burbidge, G. R.: 1970, Comm. Astrophys. Space Sci. 2, 75.Google Scholar
Brecher, K. and Morrison, P.: 1969, Phys. Rev. Letters 23, 802.Google Scholar
Clark, G., Garmire, G., and Kraushaar, W.: 1971, Proc. 12th Int. Conf. Cosmic Rays , (ed. by Hobart, ), Vol. I, p. 91.Google Scholar
Cowsik, R. and Kobetich, E. J.: 1971, Proc. Int. Conf. on Cosmic Rays , Vol. 1, p. 38.Google Scholar
Cowsik, R. and Pal, Yash: 1971, Technical Report No. 71-113, University of Maryland.Google Scholar
Damle, S. V., Daniel, R. R., Joseph, George, and Lavakare, P. J.: 1971, Astrophys. Space Sci. 14, 473.Google Scholar
Daniel, R. R., Joseph, G., and Lavakare, P. J.: 1972, paper submitted to this Symposium.Google Scholar
Danjo, A.: 1972, paper submitted to this Symposium.Google Scholar
Dyer, C. S. and Morfill, G. E.: 1971, Astrophys. Space Sci. 14, 243.CrossRefGoogle Scholar
Dyer, C. S., Engel, A. R., and Quenby, J. J.: 1972, paper submitted to this Symposium.Google Scholar
Fishman, G. J.: 1972, Astrophys. J. 163, 171.Google Scholar
Golenetskii, S. V., Mazets, E. P., Ilinskii, V. N., Aptekar, R. L., Dredov, M. M., Guruyan, Yu. A., and Panov, V. N.: 1971, Astrophys. Letters 9, 69.Google Scholar
Horstman, H.: 1972, paper submitted to this Symposium.Google Scholar
Horstman-Moretti, E., Fuligini, F., and Brini, D.: 1971, Nuovo Cimento 6, 68.Google Scholar
Horstman, H. and Horstman-Moretti, E.: 1971, Nature 229, 148.Google Scholar
Kasturirangan, K. and Rao, U. R.: 1971, preprint; to appear in Astrophys. Space Sci. Google Scholar
Kasturirangan, K. and Rao, U. R.: 1972, paper submitted to this Symposium.Google Scholar
Makino, F.: 1970, Astrophys. Space Sci. 8, 251.Google Scholar
Manchanda, R. K., Biswas, S., Agarwal, P. C., Gokhale, G. S., Iyengar, V. S., Kunte, P. K., and Sreekantan, B. V.: 1971, TIFR preprint CR-XA-13(71). (Also Astrophys. Space Sci. (1972) 15, 272.)CrossRefGoogle Scholar
Manchanda, R. K., Danjo, A., and Sreekantan, B. V.: 1972, paper submitted to this Symposium.Google Scholar
Mayer-Hasselwander, H. A., Pfefferman, E., Pinkau, K., Rothernel, H., and Sommer, M.: 1972. Max-Planck Institute preprint, Extraterrest. Phys. 64.Google Scholar
Perola, G. C. and Scarsi, L.: 1966, Nuovo Cimento 46A, 781.Google Scholar
Peterson, L. E., Gruber, D., Matteson, J. L., and Vette, J. I.: 1970, preprint UCSD-Sp-70-05.Google Scholar
Rudstam, G.: 1966, Z. Naturforch. 21A, 1027.CrossRefGoogle Scholar
Schwartz, D. A.: 1969, Thesis, U.C.S.D. Google Scholar
Schwartz, D. A., Hudson, H. S., and Peterson, L. E.: 1970, Astrophys. J. 162, 431.CrossRefGoogle Scholar
Share, G. H., Kinzer, R. L., and Seeman, N.: 1972, paper submitted to this Symposium.Google Scholar
Trombka, J. I., Metzger, A. E., Arnold, J. R., Matteson, J. L., Reedy, R. C., and Peterson, L. E.: 1973, Astrophys. J. , in press.Google Scholar
Vedrenne, G., Albernhe, F., Talon, R., and Martin, I. M.: 1972, paper submitted to this Symposium.Google Scholar
Vette, J. I., Gruber, D., Matteson, J. L., and Peterson, L. E.: 1970, Astrophys. J. 160, L161.Google Scholar