Abstract
An analysis is made of the implications of assuming that suprathermal dust grains (a≃3×108 cm) of intergalactic origin may acquire cosmic ray energies as high as 1020 eV. These dust grains may attain ‘suprathermal energy’ (v g≃3×108 cm s−1) by the Fermi process. Initially the dust grains are accelerated by the radiation pressure against the drag of the ambient gas of the medium, but once these dust grains attain a terminal velocity (U≃105 cm s−1), then they may be expelled out of the galactic region into the intergalactic medium and finally acquire high energy
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References
Brecher, K. and Burbidge, G. R.: 1972.Astrophys. J. 174, 253.
Burbidge, G. R.: 1974,Phil. Trans. Roy. Soc. London A277, 481.
Burbidge, G. R. and Hoyle, F.: 1963,Astrophys. J. 138, 57.
Burbidge, R. R. and Stein, W. A.: 1970,Astrophys. J. 160, 573.
Dasgupta, A. K.: 1978,Astrophys. Space Sci. 59, 347, 354.
Dasgupta, A. K.: 1979,Astrophys. Space Sci. 67, 247, 253.
Dasgupta, A. K.: 1980,Astrophys. Space Sci. 76, 119, 128.
Dasgupta, A. K.: 1981,Astrophys. Space Sci. 79, 153.
Demoulin, M. H. and Burbidge, G. R.:Astrophys. J. 154, 3.
Elliot, H.: 1974,Phil. Trans. Roy. Soc. London A277, 381.
Fanselow, J. L., Hartman, R. C., Hildebrand, R. H., and Meyer, P.: 1969,Astrophys. J. 158, 771.
Ginzburg, V. L.: 1969,The Origin of Cosmic Rays, Gordon and Breach, London.
Ginzburg, V. L.: 1970,Comm. Astrophys. Space Phys. 2, 1.
Ginzburg, V. L.: 1974,Comm. Astrophys. Space Phys. 4, 167.
Ginzburg, V. L. and Syrovatsky, S. I.: 1964,The Origin of Cosmic Rays, MacMillan, New York.
Ginzburg, V. L. and Syrovatsky, S. I.: 1967, in P. von Woerdan (ed.), Radio Astronomy and Galactic System',IAU Symp. 31, 411.
Ginzburg, V. L. and Syrovatsky, S. I.: 1969,Proc. 11 Int. Conf. on Cosmic Rays Budapest, p. 0G-1.
Ginzburg, V. L. and Syrovatsky, S. I.: 1971,Proc. 12th. Int. Conf. on Cosmic Rays, Hobart, p. 53.
Greisen, K.: 1966,Phys. Rev. Letters 16, 748.
Hillas, A. M.: 1974,Phil. Trans. Roy. Soc. London A277, 413, 428.
Honda, M. and Arnold, J. R.: 1967,Hdb. Phys. 46, 11, 613.
Nandy, K., Morgan, D. H., and Reddis, V. C.: 1974,Monthly Notices Roy. Astron. Soc. 189, 19.
Suga, K., Sakuyama, H., Kawaguchi, S., and Hara, T.: 1971, EAS-16, 121k Conference Cosmic Rays.
Wolfendale, A. W.: 1974,Phil. Trans. Roy. Soc. London A277, 420.
Zwicky F.: 1951,Publ. Astron. Soc. Pacific 63, 61.
Zwicky F.: 1957,Publ. Astron. Soc. Pacific 64, 242.
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Dasgupta, A.K. Cosmic ray origin above 1018 eV: Galactic or extragalactic?. Astrophys Space Sci 86, 361–369 (1982). https://doi.org/10.1007/BF00683342
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DOI: https://doi.org/10.1007/BF00683342