1998/03/28 by T. Miyaji, Yoshitaka Ishisaki, Y. Ishisaki +15
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysical Phenomena and Observations #Relativity and Gravitational Theory #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/9803320
4 pages, 3 postscript figures, using aa.cls, accepted to A&A Letters
arxiv created 1998/03/28 · arxiv updated 2009/12/01
We have made a series of joint spectral fits for two blank fields, the Lockman Hole and the Lynx-3A field, where a significant amount of both ASCA and ROSAT PSPC data exist after thorough screenings. The ASCA SIS, GIS and ROSAT PSPC spectra from these fields have been fitted simultaneously. Comparison at E>1keV shows general agreement within 10% in the Lockman Hole data and a 20-30% disagreement in the Lynx-3A data, indicating remaining observation-dependent systematic problems. In both cases, satisfactory fits have been found for the overall 0.1-10 keV spectrum with an extragalactic power-law component (or a broken power-law component with steepening at E<1 keV), a hard thermal component with plasma temperature of kT≈ 0.14 keV and a soft thermal component kT≈ 0.07 keV.