Astrophysics

, Volume 53, Issue 3, pp 446–452 | Cite as

Constraining the cosmological time variation of the fine - structure constant

  • Le Duc Thong
  • Tran van Hung
  • Nguyen Thi Thu Huong
  • Ha Huy Bang
Article

The variation of the fine-structure constant α = e2 / ħc can be probed by comparing the wavelength of atomic transitions from the redshift of quasars in the Universe and laboratory over cosmological time scales t ~ 1010 yr. After a careful selection of pairs of lines, the Thong method with a derived analytical expression for the error analysis was applied to compute the α variation. We report a new constraint on the variation of the fine-structure constant based on the analysis of the CIV, NV, MgII, AlIII, and SiIV doublet absorption lines. The weighted mean value of the variation in α derived from our analysis over the redshift range 0.4939 ≤ z ≤ 3.7 is = ( 0.09 ± 0.07)×10−5. This result is three orders of magnitude better than the results obtained by earlier analysis of the same data on the constraint on Δα/α .

Keywords

Cosmology observations - line profiles - quasars absorption lines 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    P. A. M. Dirac, Nature., 139, 323, 1937.MATHCrossRefADSGoogle Scholar
  2. 2.
    E. A. Milne, Proc. R. Soc. London, Ser. A, 158, 324, 1937.MATHCrossRefADSGoogle Scholar
  3. 3.
    J. P. Uzan, Rev. Mod. Phys., 75, 403, 2003.CrossRefMathSciNetADSGoogle Scholar
  4. 4.
    H. Chand et al., Astron. Astrophys., 47, 430, 2005.Google Scholar
  5. 5.
    Y. Fujii et al., Nucl. Phys. B573, 377, 2000.CrossRefADSGoogle Scholar
  6. 6.
    R. Srianand et al., Phys. Rev. Lett., 92, 121302, 2004.CrossRefADSGoogle Scholar
  7. 7.
    J. N. Bahcall and M. Schmitt, Phys. Rev. Lett., 19, 1294, 1976.CrossRefADSGoogle Scholar
  8. 8.
    J. N. Bahcall, C. L. Steinhardt, and D. Schlegel, Astrophys. J., 600, 520, 2004.CrossRefADSGoogle Scholar
  9. 9.
    A. M. Wolfe et al., Phys. Rev. Lett., 37, 179, 1976.CrossRefADSGoogle Scholar
  10. 10.
    S. A. Levshakov, Mon. Not.. Roy. Astron. Soc., 269, 339, 1994.ADSGoogle Scholar
  11. 11.
    A. Y. Potekhin and D. A. Varshalovich, Astron. Astrophys. Suppl. Ser., 104, 89, 1994.ADSGoogle Scholar
  12. 12.
    L. L. Cowie and A. Songaila, Astrophys. J., 453, 596, 1995.CrossRefADSGoogle Scholar
  13. 13.
    A. V. Ivanchik, A. Y. Potekhin, and D. A. Varshalovich, Astron. Astrophys., 343, 439, 1999.ADSGoogle Scholar
  14. 14.
    D. A. Varshalovich and A. Y. Potekhin, Astron. Lett., 20, 6; Astron. Astrophys. Suppl. Ser., 104, 89, 1994.Google Scholar
  15. 15.
    D. A. Varshalovich, V. E. Panchuk, and A. V. Ivanchik, Astron. Lett., 22, 6, 1996.ADSGoogle Scholar
  16. 16.
    L. D. Thong, M. N. Giao, N. T. Hung, and T. V. Hung, Europhys. Lett., 87, 69002, 2009.CrossRefADSGoogle Scholar
  17. 17.
    M. T. Murphy et al., Mon. Not. Roy. Astron. Soc., 327, 1237, 2001.CrossRefADSGoogle Scholar
  18. 18.
    M. T. Murphy et al., Mon. Not. Roy. Astron. Soc., 345, 609, 2003.CrossRefADSGoogle Scholar
  19. 19.
    V. A. Dzuba et al., Phys. Rev. Lett., 82, 888, 1999.CrossRefADSGoogle Scholar
  20. 20.
    J. K. Webb et al., Phys. Rev. Lett., 87, 091301, 2001.CrossRefADSGoogle Scholar
  21. 21.
    P. Petitjean, M. Rauch, and R. F. Carswell, Astron. Astrophys., 291, 29, 1994.ADSGoogle Scholar
  22. 22.
    A. P. Striganov and G. A. Odintsova, Tables of spectral lines of atoms and ions, 1982.Google Scholar
  23. 23.
    A. F. Martinez, G. Vladilo, and P. Bonifacio, Mem. Soc. Astron. Ital. Suppl., 3, 252, 2003.ADSGoogle Scholar
  24. 24.
    S. A. Levshakov, I. I. Agafonova, P. Molaro, and D. Reimers, Mem. Soc. Astron. Ital. Suppl., 1, 2008.Google Scholar

Copyright information

© Springer Science+Business Media, Inc. 2010

Authors and Affiliations

  • Le Duc Thong
    • 1
  • Tran van Hung
    • 2
  • Nguyen Thi Thu Huong
    • 3
  • Ha Huy Bang
    • 3
  1. 1.Ho Chi Minh City Institute of PhysicsHo Chi MinhVietnam
  2. 2.Research and Development Center for Radiation TechnologyHanoiVietnam
  3. 3.Laboratory for High Energy Physics and Cosmology, Faculty of PhysicsVietnam National UniversityHanoiVietnam

Personalised recommendations