Abstract
THE existence of a source in the Crab Nebula with an angular diameter of less than 1 sec of arc has been revealed by observations of interplanetary scintillation at a frequency of 38 Mc/s (ref. 1). The brightness temperature derived from these observations is so great that the synchrotron mechanism may not provide an adequate explanation for the emission. The determination of the spectrum is therefore of great interest.
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References
Hewish, A., and Okoye, S. E., Nature, 207, 59 (1965)
Dennison, P. A., and Hewish, A., Nature, 213, 343 (1967).
Little, L. T., and Hewish, A., Mon. Not. Roy. Astro. Soc., 134, 221 (1966).
Little, L. T., Hewish, A., and Dennison, P. A., Planet. Space Sci., 14, 1221 (1966).
Andrew, B. H., Branson, N. J. B. A., and Wills, D., Nature, 203171 (1964).
Gower, J. F. R., Nature, this issue, p. 1213.
Branson, N. J. B. A., Observatory, 85, 250 (1965).
Branson, N. J. B. A., Nature, this issue, p. 1211.
Kronberg, P. P., Nature, 212, 1557 (1966).
Hornby, J. M., and Williams, P. J. S., Mon. Not. Roy. Astro. Soc., 131, 237 (1966).
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BELL, S., HEWISH, A. Angular Size and Flux Density of the Small Source in the Crab Nebula at 81.5 Mc/s. Nature 213, 1214–1216 (1967). https://doi.org/10.1038/2131214a0
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DOI: https://doi.org/10.1038/2131214a0
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