THE POPULATION OF HIGH-REDSHIFT ACTIVE GALACTIC NUCLEI IN THE<i>CHANDRA</i>-COSMOS SURVEY
書誌事項
- 公開日
- 2011-10-21
- DOI
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- 10.1088/0004-637x/741/2/91
- 10.48550/arxiv.1103.2570
- 公開者
- American Astronomical Society
この論文をさがす
説明
We present the high redshift (33. 81 sources are selected in the 0.5-2 keV band, 14 are selected in the 2-10 keV and 6 in the 0.5-10 keV bands. We sample the high luminosity (log L_(2-10 keV)>44.15 erg/s) space density up to z~5 and a fainter luminosity range (43.53. We find that the space density of high-luminosity AGNs declines exponentially at all the redshifts, confirming the trend observed for optically selected quasars. At lower luminosity, the measured space density is not conclusive, and a larger sample of faint sources is needed. Comparisons with optical luminosity functions and BH formation models are presented together with prospects for future surveys.
10 pages, 6 figures. ApJ in press. Table 3 is available in the published version
収録刊行物
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- The Astrophysical Journal
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The Astrophysical Journal 741 (2), 91-, 2011-10-21
American Astronomical Society
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キーワード
- High Energy Astrophysical Phenomena (astro-ph.HE)
- Cosmology and Nongalactic Astrophysics (astro-ph.CO)
- galaxies: active
- FOS: Physical sciences
- 530
- 520
- X-rays: galaxies
- surveys
- galaxies: evolution; galaxies: active; surveys; X-rays: galaxies
- evolution
- Astrophysics - High Energy Astrophysical Phenomena
- Astrophysics - Cosmology and Nongalactic Astrophysics
詳細情報 詳細情報について
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- CRID
- 1363670318481021952
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- ISSN
- 15384357
- 0004637X
- https://id.crossref.org/issn/0004637X
- http://id.crossref.org/issn/0004637X
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- HANDLE
- 11585/106435
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- データソース種別
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- Crossref
- OpenAIRE