- Physical Review Journals
All JournalsPhysics Magazine
Access Provided by Xinjiang University

Physical Review D

Export citation

Export citation

Choose format for download:

Download Citation
  • Access by Xinjiang University

Comparative study of dark energy constraints from current observational data

Yun Wang1,*, Chia-Hsun Chuang1, and Pia Mukherjee2

  • 1Homer L. Dodge Department of Physics & Astronomy, Univ. of Oklahoma, 440 W Brooks Street, Norman, Oklahoma 73019, USA
  • 2Sussex Astronomy Centre, Department of Physics & Astronomy, University of Sussex, Falmer, Brighton, BN1 9QH, U.K.

  • *wang@nhn.ou.edu
PDF

Phys. Rev. D 85, 023517 – Published 13 January, 2012

DOI: https://doi.org/10.1103/PhysRevD.85.023517

Abstract

We examine how dark energy constraints from current observational data depend on the analysis methods used: the analysis of Type Ia supernovae (SNe Ia), and that of galaxy clustering data. We generalize the flux-averaging analysis method of SNe Ia to allow correlated errors of SNe Ia, in order to reduce the systematic bias due to weak lensing of SNe Ia. We find that flux-averaging leads to larger errors on dark energy and cosmological parameters if only SN Ia data are used. When SN Ia data (the latest compilation by the SNLS team) are combined with WMAP 7 yr results (in terms of our Gaussian fits to the probability distributions of the CMB shift parameters), the latest Hubble constant (H0) measurement using the Hubble Space Telescope (HST), and gamma ray burst (GRB) data, flux-averaging of SNe Ia increases the concordance with other data, and leads to significantly tighter constraints on the dark energy density at z=1, and the cosmic curvature Ωk. The galaxy clustering measurements of H(z=0.35)rs(zd) and rs(zd)/DA(z=0.35) (where H(z) is the Hubble parameter, DA(z) is the angular diameter distance, and rs(zd) is the sound horizon at the drag epoch) by Chuang & Wang (2011) are consistent with SN Ia data, given the same pirors (CMB+H0+GRB), and lead to significantly improved dark energy constraints when combined. Current data are fully consistent with a cosmological constant and a flat universe.

View figure in article

Article Text

References (63)

  1. A. G. Riess et al., Astron. J. 116, 1009 (1998).
  2. S. Perlmutter et al., Astrophys. J. 517, 565 (1999).
  3. E. J. Copeland, M. Sami, and S. Tsujikawa, Int. J. Mod. Phys. D 15, 1753 (2006).
  4. P. Ruiz-Lapuente, Classical Quantum Gravity 24, R91 (2007).
  5. B. Ratra and M. S. Vogeley, Publ. Astron. Soc. Pac. 120, 235 (2008).
  6. J. Frieman, M. Turner, and D. Huterer, Annu. Rev. Astron. Astrophys. 46, 385 (2008).
  7. R. R. Caldwell and M. Kamionkowski, Annu. Rev. Nucl. Part. Sci. 59, 397 (2009).
  8. J.-P. Uzan, Gen. Relativ. Gravit. 42, 2219 (2010).
  9. Y. Wang, Dark Energy (Wiley-VCH, New York, 2010).
  10. M. Li et al., Commun. Theor. Phys. 56, 525 (2011).
  11. C. Blake and K. Glazebrook, Astrophys. J. 594, 665 (2003).
  12. H. Seo and D. J. Eisenstein, Astrophys. J. 598, 720 (2003).
  13. W. Hu, Phys. Rev. D 66, 083515 (2002).
  14. B. Jain and A. Taylor, Phys. Rev. Lett. 91, 141302 (2003).
  15. L. Amati et al., Astron. Astrophys. 390, 81 (2002).
  16. J. S. Bloom, D. A. Frail, and S. R. Kulkarni, Astrophys. J. 594, 674 (2003).
  17. B. E. Schaefer, Astrophys. J. 583, L71 (2003).
  18. E. Komatsu et al., Astrophys. J. Suppl. Ser. 192, 18 (2011).
  19. A. G. Riess et al., Astrophys. J. 730, 119 (2011).
  20. Y. Wang, J. Cosmol. Astropart. Phys. 05 (2008) 021.
  21. F. Simpson and J. A. Peacock, Phys. Rev. D 81, 043512 (2010).
  22. A. Conley et al., Astrophys. J. Suppl. Ser. 192, 1 (2011).
  23. L. Hui and P. B. Greene, Phys. Rev. D 73, 123526 (2006).
  24. C. Clarkson et al., arXiv:1109.2484v2.
  25. Y. Wang, Astrophys. J. 536, 531 (2000).
  26. Y. Wang and P. Mukherjee, Astrophys. J. 606, 654 (2004).
  27. Y. Wang, J. Cosmol. Astropart. Phys. 03 (2005) 005.
  28. C.-H. Chuang and Y. Wang, arXiv:1102.2251.
  29. W. J. Percival et al., Mon. Not. R. Astron. Soc. 401, 2148 (2010).
  30. C. Blake et al., Mon. Not. R. Astron. Soc. 415, 2892 (2011).
  31. F. Beutler et al., arXiv:1106.3366 [Mon. Not. R. Astron. Soc. (to be published)].
  32. L. Page et al., Astrophys. J. Suppl. Ser. 148, 233 (2003).
  33. Y. Wang and P. Mukherjee, Phys. Rev. D 76, 103533 (2007).
  34. H. Li et al., Astrophys. J. 683, L1 (2008).
  35. Y. Wang, Phys. Rev. D 77, 123525 (2008).
  36. W. Hu and N. Sugiyama, Astrophys. J. 471, 542 (1996).
  37. D. Eisenstein and W. Hu, Astrophys. J. 496, 605 (1998).
  38. M. Chevallier and D. Polarski, Int. J. Mod. Phys. D 10, 213 (2001).
  39. E. Komatsu, “wmap_prior_for_bao.pdf” at http://gyudon.as.utexas.edu/~komatsu/wmap7/.
  40. Y. Wang, Phys. Rev. D 80, 123525 (2009).
  41. Y. Wang, Phys. Rev. D 78, 123532 (2008).
  42. B. E. Schaefer, Astrophys. J. 660, 16 (2007).
  43. N. R. Butler et al., Astrophys. J. 671, 656 (2007).
  44. N. R. Butler et al., Astrophys. J. 694, 76 (2009).
  45. V. Petrosian, A. Bouvier, and F. Ryde, arXiv:0909.5051.
  46. A. Shahmoradi and R. J. Nemiroff, Mon. Not. R. Astron. Soc. 411, 1843 (2011).
  47. Y. Wang and P. Garnavich, Astrophys. J. 552, 445 (2001).
  48. Y. Wang and M. Tegmark, Phys. Rev. Lett. 92, 241302 (2004).
  49. Y. Wang and K. Freese, Phys. Lett. B 632, 449 (2006).
  50. A. D. Linde, in Three Hundred Years of Gravitation, edited by S. W. Hawking and W. Israel (Cambridge Univ. Press, Cambridge, 1987), pp. 604–630.
  51. Y. Wang, J. M. Kratochvil, A. Linde, and M. Shmakova, J. Cosmol. Astropart. Phys. 12 (2004) 006.
  52. A. Lewis and S. Bridle, Phys. Rev. D 66, 103511 (2002).
  53. A. Albrecht, G. Bernstein, R. Cahn, W. L. Freedman, J. Hewitt, W. Hu, J. Huth, M. Kamionkowski, E. W. Kolb, L. Knox, J. C. Mather, S. Staggs, and N. B. Suntzeff, arXiv:astro-ph/0609591.
  54. C. Escamilla-Rivera et al., J. Cosmol. Astropart. Phys. 09 (2011) 003.
  55. X.-D. Li et al., J. Cosmol. Astropart. Phys. 07 (2011) 011.
  56. R. Bean and M. Tangmatitham, Phys. Rev. D 81, 083534 (2010).
  57. Y. Chen and B. Ratra, Phys. Lett. B 703, 406 (2011).
  58. J. N. Dossett, J. Moldenhauer, and M. Ishak, Phys. Rev. D 84, 023012 (2011).
  59. T. Holsclaw et al., arXiv:1104.2041.
  60. N. Liang, P.-X. Wu, and Z.-H. Zhu, Res. Astron. Astrophys. 11, 1019 (2011).
  61. S. Wang, X.-D. Li, and M. Li, Phys. Rev. D 83, 023010 (2011).
  62. A. Cimatti et al., Exp. Astron. 23, 39 (2009).
  63. Y. Wang et al., Mon. Not. R. Astron. Soc. 409, 737 (2010).

Outline

Information

Phys. Rev. D 85, 023517– Published 13 January, 2012
  • Received 15 September 2011
Article part of CHORUS

© 2012 American Physical Society

Sign In to Your Journals Account

Filter

Filter

Article Lookup

Enter a citation