Journal of The Korean Astronomical Society (천문학회지)

The Korean Astronomical Society (한국천문학회)
권호 표지

UNDER-DENSITY REGIONS AND THE PRIMORDIAL DENSITY FIELD

  • KIM MINSUN (Department of Astronomy, Seoul National University) ;
  • PARK CHANGBOM (Department of Astronomy, Seoul National University)
  • Published : 1998.10.01
Download PDF
⟨ Previous Next ⟩

Abstract

We show that the low density regions of the matter distribution preserve the properties of the primordial density field better than the high density regions. We have performed a cosmological N-body simulation of large-scale structure formation in the standard CDM cosmology, and studied the evolution of statistics of under-density and over-density regions separately. The rank-order of the under-density regions is closer to the original one compared to that of the over-density regions. The under-density peaks (or voids) has moved less than over-density peaks (or dense clusters of galaxies) from their initial positions. Therefore, the under-density regions are more useful than the over-density regions in the study of the statistical property of the primordial density field.

Keywords

References

  1. ApJ v.304 Bardeen, J. M.;Bond, J. R.;Kaiser, N.;Szalay, A. S.
  2. MARAS v.280 Baugh, C. M.;Gaztanaga, G.
  3. MARAS v.285 Croft, R. A. C.;Gazatnaga, E.
  4. ApJ v.495 Croft, R. A. C.;Gazatnaga, E.
  5. MARAS v.238 Einasto, J.;Einasto, M.;Gramann, M.
  6. ApJ v.491 El-Ad, H.;Piran, T.
  7. ApJ v.374 Hamilton, A. J. S.;Kumar, P.;Lu, E.;Matthews, A.
  8. Computer Simulation Using Particles Hockney, R. W.;Eastwood, J. W.
  9. MARAS v.276 Jain, B.;Mo, H. J.;White, S. D. M.
  10. MARAS v.248 Kauffmann, G.;Fairall, A. P.
  11. MARAS v.267 Little, B.;Weinberg, D. H.
  12. ApJ v.414 Melott, A.
  13. MARAS v.282 Mo, H. J.;Jing, Y. P.;White, S. D. M.
  14. ApJ v.391 Nusser, A.;Dekel, A.
  15. ApJ v.449 Nusser, A.;Dekel, A.;Yahil, A.
  16. MARAS v.249 Park, C.;Gott, J. R.
  17. J. Kor. Astron. Soc. v.30 Park, C.
  18. MARAS v.267 Peacock, J. A.;Dodds, S. J.
  19. ApJ v.339 Pellegrini, P. S.;da Costa, L. N.;de Carvalho, R. R.
  20. MARAS v.265 Piran, T.;Lecar, M.;Goldwirth, D. S.;da Costa, L. N.;Blumenthal, G. R.
  21. ApJ v.470 Ryden, B. S.;Melott, A. L.
  22. ApJ v.431 Sahni, V.;Sathyaprakash, B. S.;Shandarin, S. F.
  23. ApJ v.409 Slezak, E.;de Lapparent, V.;Bijaoui, A.
  24. ApJ v.371 Suginohara, T.;Suto Y.
  25. ApJ v.420 Vogeley, M. S.;Park, C.;Geller, M. J.;Huchra, J. P.;Gott, J. R.
  26. A&A v.144 Vettolani, G.;de Souza, R. E.;Marano, B.;Chincarini, G.
  27. MARAS v.254 Weinberg, D. H.