Showing papers by "Steven L. Snowden published in 1986"
TL;DR: The results of a sounding rocket flight that observed the very soft X-ray diffuse background in a section of the northern Galactic hemisphere are presented in this article, where the results imply that the neutral hydrogen column density between the emitting material and the earth varies by less than 2 x 10 to the 18th H I/sq cm over the observed region.
Abstract: The results of a sounding rocket flight that observed the very soft X-ray diffuse background in a section of the northern Galactic hemisphere are presented The ratio of the measured Be band count rates to the Wisconsin sky survey B band count rates is nearly constant over a 120 deg arc on the sky, strongly suggesting a common emission mechanism for both Be and B band X-rays The mean free path is about seven times smaller for the Be band than for the B band The present results imply that the neutral hydrogen column density between the emitting material and the earth varies by less than 2 x 10 to the 18th H I/sq cm over the observed region It is concluded that such variations are unlikely unless the total intervening column density is less than a few times this value
52 citations