A Large-Area Cross-Correlation Study of High Galactic Latutude Soft and Hard X-ray Skies

Takamitsu Miyaji, Guenther Hasinger, Roland Egger +2

We have made cross-correlation analyses of (2 -- 15 keV) HEAO A2 and 1 keV ROSAT PSPC All-Sky Survey maps over a selected area ($\sim$ 4000 deg${}^2$) with high galactic latitude (b>…