On the X-ray haloes of the Galaxy and the Local Group and the diffuse soft X-ray background

Details On the X-ray haloes of the Galaxy and the Local Group and the diffuse soft X-ray background On the X-ray haloes of the Galaxy and the Local Group and the diffuse soft X-ray background

Apr 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999a%26a...344..333s&link_type=abstract

Astronomy and Astrophysics, v.344, p.333-341 (1999)

Astronomy and Astrophysics

Astrophysics

6

X-Rays: Ism, Ism: Structure, Ism: Individual Objects: Draco Complex, Ism: Clouds, Ism: General

Scientific paper

We have extended the spectral modelling of the soft X-ray background (SXRB) using the ROSAT PSPC data along several lines of galactic longitude. Our results continue to demonstrate the need for a Galactic halo component, which is shown to vary markedly as a function of position. These fluctuations significantly affect the ability to investigate variations in the extragalactic SXRB below 2 keV. Our conclusions do not support the proposal of an X-ray halo surrounding the Local Group of galaxies as invoked by Suto et al. (1996). Application of the 3 component model to a deep ROSAT observation in the direction of the Lockman hole is also discussed.

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