Abstract
SEVERAL authors (see refs 1–5 for example) have studied the possible influence of galactic point X-ray sources in the ionospheric D region. The observed variabilities in phase and amplitude of very low frequency (v.l.f.) night-time propagation have been attributed to different ionisation sources, but the relationship between the appearance of strong X-ray sources in the sky and the recorded v.1.f. phase and intensity variations has been emphasised. Particularly important are the effects of Sco X-1, Cen X-2 and Cen X-4.
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KARSZENBAUM, H., GAGLIARDINI, D. Galactic X-ray sources and the ionospheric D region. Nature 257, 34–35 (1975). https://doi.org/10.1038/257034a0
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DOI: https://doi.org/10.1038/257034a0
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