Advertisement

Cosmological Parameters from the Clustering of AGN

  • Spyros Basilakos
Conference paper
Part of the Astrophysics and Space Science Library book series (ASSL, volume 276)

Abstract

We attempt to put constraints on different cosmological and biasing models by combining the recent clustering results of X-ray sources in the local (z ≤ 0.1) and distant universe (z ∼ 1). To do this we compare the measured angular correlation function for bright [1] and faint [23] ROSATX-ray sources respectively with those expected in three spatially flat cosmological models. Taking into account the different functional forms of the bias evolution, we find that a low-Ωo cosmological model (ΩA = 0.7) which contains high usas τ 8 mass = 1.13 with different bias behaviour, best reproduce the AGN clustering results. While τCDM models with different bias behaviour are ruled out at a high significance level.

Keywords

galaxies clustering-X-raysources-cosmology theory-large-scale structure of universe 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. [2]
    Bardeen, J.M., Bond, J.R., Kaiser, N. & Szalay, A.S., 1986, ApJ, 304, 15ADSCrossRefGoogle Scholar
  2. [3]
    Basilakos S., Plionis, M., 2001, ApJ, 550, 522ADSCrossRefGoogle Scholar
  3. [4]
    Basilakos S., 2001, MNRAS, 326, 203ADSCrossRefGoogle Scholar
  4. [5]
    Boyle, B. J., Griffiths, R. E., Shanks, T., Stewart, G. C., Georgantopoulos, I., 1993, MNRAS, 260, 49ADSGoogle Scholar
  5. [6]
    Carrera, F. J., Barcons, X., Fabian, A. C., Hasinger, G., Mason, K. O., McMahon, R. G., Mittaz, J. P. D., Page, M. J., 1998, MNRAS, 299, 229ADSCrossRefGoogle Scholar
  6. [7]
    Cole, S., Hatton, S., Weinberg, D. H., Frenk, C. S., 1998, MNRAS, 300, 945ADSCrossRefGoogle Scholar
  7. [8]
    Colin, P., Klypin, A., Kravtsov, A. V., Khokhlov, A. M., 1999, ApJ, 523, 32ADSCrossRefGoogle Scholar
  8. [9]
    Eke, V., Cole, S., Frenk, C. S., 1996, MNRAS, 282, 263ADSGoogle Scholar
  9. [10]
    Kaiser, N., 1984, ApJ, 284, L9ADSCrossRefGoogle Scholar
  10. [11]
    Kauffmann, G., Golberg, J. M., Diaferio, A., 1999, MNRAS, 307, 529ADSCrossRefGoogle Scholar
  11. [12]
    Maddox, S., Efstathiou, G., Sutherland, W.J., Loveday, J., 1990, MNRAS, 242, 457ADSGoogle Scholar
  12. [13]
    Magliocchetti, M., Maddox, S. J., Lahav, O., Wall, J. V., 1999, MNRAS, 306, 943ADSCrossRefGoogle Scholar
  13. [14]
    Martini, P., & Weinberg, D. H., 2000, ApJ, 547, 12ADSCrossRefGoogle Scholar
  14. [15]
    Matarrese, S., Coles, P., Lucchin, F., Moscardini, L., 1997, MNRAS, 286, 115ADSGoogle Scholar
  15. [16]
    Mo, H.J, & White, S.D.M 1996, MNRAS, 282, 347ADSGoogle Scholar
  16. [17]
    Peebles P.J.E., 1993, Principles of Physical Cosmology, Princeton University Press, Princeton New JerseyGoogle Scholar
  17. [18]
    Perlmutter, S., et al., 1999, ApJ, 517, 565ADSCrossRefGoogle Scholar
  18. [19]
    Shanks, T., & Boyle, B. J., 1994, MNRAS, 271, 753ADSGoogle Scholar
  19. [20]
    Steidel, C.C., Adelberger, L.K., Dickinson, M., Giavalisko, M., Pettini, M., Kellogg, M., 1998, ApJ, 492, 428ADSCrossRefGoogle Scholar
  20. [21]
    Sugiyama, N., 1995, ApJS, 100, 281ADSCrossRefGoogle Scholar
  21. [22]
    Tegmark, M. & Peebles, P.J.E, 1998, ApJ, 500, L79ADSCrossRefGoogle Scholar
  22. [23]
    Vikhlinin, A. & Forman, W., 1995, ApJ, 455, 109ADSCrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media Dordrecht 2002

Authors and Affiliations

  • Spyros Basilakos
    • 1
  1. 1.Astrophysics GroupImperial College London, Blackett LaboratoryLondonUK

Personalised recommendations