XMM-Newton Proposal 02021303

Details XMM-Newton Proposal 02021303 XMM-Newton Proposal 02021303

Mar 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003xmm..prop..113s&link_type=abstract

XMM-Newton Proposal ID #02021303

Mathematics

Logic

Bridge #4, Bridge #5, Bridge #6, Xmm-Newton Proposal 02021303

Scientific paper

At high Galactic latitudes the 3/4 keV background consists of both extragalactic and Galactic emission with uncertain relative contributions. The spectrum shows an excess over the extrapolation of the extragalactic power law observed at higher energies which has been attributed to emission from sources as varied as a Galactic halo, the Local Group, diffuse cosmological emission, and a bump or upturn in the spectra of discrete cosmological sources. By studying the shadow of an NH enhancement in the Magellanic Bridge, the observed flux can be separated into foreground and background components placing clear constraints on both Galactic (e.g., halo emission is linked to the Galactic energy balance and environment) and cosmological (e.g., the structure of the universe) models.

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