𝔖 Bobbio Scriptorium
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Mass X-ray surveys of the general public

✍ Scribed by F.D. Beddard


Book ID
114090972
Publisher
Elsevier Science
Year
1950
Tongue
English
Weight
230 KB
Volume
31
Category
Article
ISSN
0041-3879

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Unconventional AGN in hard X-ray surveys
✍ A. Comastri; M. Brusa; M. Mignoli; The Hellas2xmm Team πŸ“‚ Article πŸ“… 2003 πŸ› John Wiley and Sons 🌐 English βš– 187 KB πŸ‘ 2 views

## Abstract Extensive programs of follow–up observations of hard X–ray selected sources have unambiguously revealed that the sources of the X–ray background are characterized by an extremely large dispersion in their optical magnitude and spectroscopic classification. Here we present the results of