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Record 36 of 48
The origin of the cosmic X-ray background
External Online Source: doi:10.1038/353315a0
Author and Affiliation:
Shanks, T.(Durham, University, United Kingdom)
Georgantopoulos, I.(Durham Univ., United Kingdom)
Stewart, G. C.(Durham Univ., United Kingdom)
Pounds, K. A.(Leicester, University, United Kingdom)
Boyle, B. J.(Cambridge University, Institute of Astronomy, United Kingdom)
Griffiths, R. E.(Space Telescope Science Institute, Baltimore, MD, United States)
Abstract: A high-resolution image from the Rosat X-ray satellite reveals many faint discrete sources in the 0.1-2-keV energy range. Optical spectroscopy of these sources performed at the Anglo-Australian Telescope shows that many of them are quasars, and the inferred density of quasars on the sky contributes at least 30 percent of the cosmic X-ray background at 1 kev.
Publication Date: Sep 26, 1991
Document ID:
19910069547
(Acquired Nov 28, 1995)
Accession Number: 91A54170
Subject Category: SPACE RADIATION
Document Type: Journal Article
Publication Information: Nature (ISSN 0028-0836); 353; 315-320
Publisher Information: United Kingdom
Financial Sponsor: NASA; United States
Organization Source: Durham Univ.; Cambridge, United Kingdom
Leicester Univ.; Baltimore, MD, United States
Institute of Astronomy;
Space Telescope Science Inst.
Description: 6p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: COSMIC X RAYS; FAINT OBJECTS; QUASARS; ROSAT MISSION; SATELLITE IMAGERY; ACTIVE GALACTIC NUCLEI; BACKGROUND RADIATION; PROPORTIONAL COUNTERS; SKY SURVEYS (ASTRONOMY)
Imprint And Other Notes: Nature (ISSN 0028-0836), vol. 353, Sept. 26, 1991, p. 315-320. Research supported by Royal Society, SERC, Cambridge University Institute of Astronomy, and NASA.
Miscellaneous Notes: Research supported by Royal Society, SERC, Cambridge University Institute of Astronomy, and NASA
Availability Source: Other Sources
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