2001/06/01 by R. E. Griffiths, Griffiths, R. E., A. Ptak +3
Physics and Astronomy · #Astrophysical Phenomena and Observations #Astrophysics (astro-ph) #FOS: Physical sciences #Pulsars and Gravitational Waves Research #Relativity and Gravitational Theory #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/0106027
2 pages, 1 figure, to appear in the proceedings of the conference "New Century of X-ray Astronomy" held in Yokohama, Japan, March 2001
arxiv created 2001/06/01 · openalex publication_date 2001/06/01 · arxiv updated 2009/12/01 · openalex created_date 2020/05/13 · openalex updated_date 2026/07/28
Using 100ks of XMM-Newton data on the Lockman Hole, we show how the X-ray\nbackground 'spectral paradox' is being resolved. We find the summed spectra of\nthe Type I AGN, Type II AGN, and the unidentified objects. We conclude that the\nhard slope of the XRB is caused predominantly by latter sources, i.e. the Type\nII AGN and unidentified objects.\n