HIGH-Z X-RAY AGN CLUSTERING & COSMOLOGICAL INFERENCE
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| Format: | Artículo científico |
| Language: | en |
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Universidad Nacional Autónoma de México
2009
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| author | M. Plionis |
| author_facet | M. Plionis |
| contents | HIGH-Z X-RAY AGN CLUSTERING & COSMOLOGICAL INFERENCE M. Plionis Física, Astronomía y Matemáticas galaxies: active Cosmology: observations galaxies: clusters: general We study the angular clustering of X-ray selected active galactic nuclei (AGN) in di erent ux-limited sub- samples of the Chandra Deep Field North (CDF-N) and South (CDF-S) surveys. We nd a strong dependence of the clustering strength on the sub-sample ux-limit, a fact which explains most of the disparate clustering results of di erent XMM and Chandra surveys. At high ux-limits the clustering length increases considerably; for example, at fx;limit 1015 erg s-1 cm-2, we obtain r0 ' 17 5 and 18 3 h-1 Mpc, for the CDF-N and CDF-S, respectively. The ux-limit dependence translates into a luminosity dependent X-ray AGN clustering. Applying the standard formalism relating the theoretical CDM model clustering to the data in a at cosmology (for w =-1 and h = 0:72), we nd: m ' 0:28 0:03 and 8 ' 0:75 0:03; while utilizing also the SN Ia Hubble relation (for 8 = 0:75 and h = 0:72), we nd: m ' 0:26 0:04 and w = 0:9 0:1 2009 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57115758090 en http://www.redalyc.org/revista.oa?id=571 Revista Mexicana de Astronomía y Astrofísica application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Astronomía y Astrofísica (México) Vol.35 |
| format | Artículo científico |
| id | redalyc_57115758090 |
| institution | Redalyc |
| language | en |
| publishDate | 2009 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | HIGH-Z X-RAY AGN CLUSTERING & COSMOLOGICAL INFERENCE M. Plionis Física, Astronomía y Matemáticas galaxies: active Cosmology: observations galaxies: clusters: general HIGH-Z X-RAY AGN CLUSTERING & COSMOLOGICAL INFERENCE M. Plionis Física, Astronomía y Matemáticas galaxies: active Cosmology: observations galaxies: clusters: general We study the angular clustering of X-ray selected active galactic nuclei (AGN) in di erent ux-limited sub- samples of the Chandra Deep Field North (CDF-N) and South (CDF-S) surveys. We nd a strong dependence of the clustering strength on the sub-sample ux-limit, a fact which explains most of the disparate clustering results of di erent XMM and Chandra surveys. At high ux-limits the clustering length increases considerably; for example, at fx;limit 1015 erg s-1 cm-2, we obtain r0 ' 17 5 and 18 3 h-1 Mpc, for the CDF-N and CDF-S, respectively. The ux-limit dependence translates into a luminosity dependent X-ray AGN clustering. Applying the standard formalism relating the theoretical CDM model clustering to the data in a at cosmology (for w =-1 and h = 0:72), we nd: m ' 0:28 0:03 and 8 ' 0:75 0:03; while utilizing also the SN Ia Hubble relation (for 8 = 0:75 and h = 0:72), we nd: m ' 0:26 0:04 and w = 0:9 0:1 2009 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57115758090 en http://www.redalyc.org/revista.oa?id=571 Revista Mexicana de Astronomía y Astrofísica application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Astronomía y Astrofísica (México) Vol.35 |
| title | HIGH-Z X-RAY AGN CLUSTERING & COSMOLOGICAL INFERENCE |
| topic | Física, Astronomía y Matemáticas galaxies: active Cosmology: observations galaxies: clusters: general |
| url | https://www.redalyc.org/articulo.oa?id=57115758090 |