Abstract
HUDSON et al.1 have suggested the existence of a class of unresolved low intrinsic luminosity X-ray sources to account for their own observations and those of Cooke et al.2 of a galactic disk component of diffuse X-radiation. I shall show that X-ray bursts from red dwarf flare stars may generate a time averaged disk intensity above 1.5 keV, which, conservatively estimated, satisfies the observational requirements, and that current estimates of the luminosity3,4 of individual flare X-ray bursts imply a disk intensity substantially greater than that observed.
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References
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EDWARDS, P. Galactic X-Rays from Unresolved Flare Stars. Nature Physical Science 234, 75–76 (1971). https://doi.org/10.1038/physci234075a0
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DOI: https://doi.org/10.1038/physci234075a0
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