Evidence for the Galactic X-ray Bulge II
Abstract
A mosaic of 5 ~PSPC pointed observations in the Galactic plane (l25) reveals X-ray shadows in the 0.5-2.0 keV band cast by distant molecular clouds. The observed on-cloud and off-cloud X-ray fluxes indicate that 15% and 37% of the diffuse X-ray background in this direction in the ~keV and 1.5 keV bands, respectively, originates behind the molecular gas which is located at 3 kpc from the Sun. The implication of the derived background X-ray flux beyond the absorbing molecular cloud is consistent with, and lends further support to recent observations of a Galactic X-ray bulge.
Turn this paper into a full lesson
ArcXiv compiles a staged curriculum from this paper: 8-12 lessons across beginner → advanced, synthesised section guides, visuals, flashcards, a quiz, exercises, and on-demand deep dives per section. Grounded in the abstract, never invented.