Advertisement

COBE: New Sky Maps of the Early Universe

  • G. F. Smoot
Part of the Astrophysics and Space Science Library book series (ASSL, volume 169)

Abstract

This paper presents early results obtained from the first six months of measurements of the Cosmic Microwave Background (CMB) by instruments aboard NASA’s Cosmic Background Explorer (COBE)* satellite and discusses the implications for cosmology. The three instruments: FIRAS, DMR, and DIRBE have operated well and produced significant new results. The FIRAS measurement of the CMB spectrum supports the standard Big Bang nucleosynthesis model. The maps made from the DMR instrument measurements show a surprisingly smooth early universe. The measurements are sufficiently precise that we must pay careful attention to potential systematic errors. The maps of galactic and local emission produced by the DIRBE instrument will be needed to identify foregrounds from extragalactic emission and thus to interpret the results in terms of events in the early universe.

Keywords

Cosmic Microwave Background Early Universe Cosmic String Peculiar Velocity Interplanetary Dust 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Mather et al. 1990a, Ap. J., 354, L37–L41.ADSCrossRefGoogle Scholar
  2. 2.
    Cheng et al. 1990, Bull. APS, 35, 937.Google Scholar
  3. 3.
    Zel’dovich Ya. B. and Sunyaev R. A. 1969, Ap. Space Sciences, 4, 301.ADSCrossRefGoogle Scholar
  4. 4.
    Matsumoto et al. (1988), Ap. J., 329, 567–571.ADSCrossRefGoogle Scholar
  5. 5.
    Gush, H.P., Halpern, M. & Wishnow, E. (1990) Phys. Rev. Lett., 35, 937.Google Scholar
  6. 6.
    Toral, M.A., et al., IEEE Transactions on Antennas and Propagation, 37, 171 (1989).ADSCrossRefGoogle Scholar
  7. 7.
    Smoot, G.F., et al., Ap. J., 360, 685 (1990).ADSCrossRefGoogle Scholar
  8. 8.
    Bennett, C.L., et al., in preparation.Google Scholar
  9. 9.
    Torres, S., et al., Data Analysis in Astronomy, ed. Di Gesu et al., Plenum Press (1990).Google Scholar
  10. 10.
    Kerr, F.J., and Lyndon-Bell, D., MNRAS, 221, 1023 (1990).ADSGoogle Scholar
  11. 11.
    Fich, M., Blitz, L., and Stark, A., Ap. J., 342, 272 (1989).ADSCrossRefGoogle Scholar
  12. 12.
    Yahil, A., Tamman, A., and Sandage, A., Ap. J., 217, 903 (1977).ADSCrossRefGoogle Scholar
  13. 13.
    Collins, C.B., and Hawking, S.W., MNRAS, 162, 307 (1973).ADSGoogle Scholar
  14. 14.
    Barrow, J.D., Juskiewicz, R., and Sonoda, D.H., MNRAS, 213, 917 (1985).ADSGoogle Scholar
  15. 15.
    Sachs, R.K., and Wolfe, A.M., Ap. J., 147, 73 (1967).ADSCrossRefGoogle Scholar
  16. 16.
    Grischuk, L.P., and Zel’dovich, Ya. B., Soy. Astron., 22, 125 (1978).ADSGoogle Scholar
  17. 17.
    Burke, W.L., Ap. J., 196, 329 (1975).ADSCrossRefGoogle Scholar
  18. 18.
    Vilenkin, A., Physics Reports, 121, 263 (1985).MathSciNetADSCrossRefGoogle Scholar
  19. 19.
    Stebbins, A., Ap. J., 327, 584 (1988).MathSciNetADSCrossRefGoogle Scholar
  20. 20.
    Stebbins, A., et al., Ap. J., 322, 1 (1987).ADSCrossRefGoogle Scholar
  21. 21.
    Yang, J., et al., Ap. J., 281, 493 (1984).ADSCrossRefGoogle Scholar
  22. 22.
    Gorski, K., Ap. J. Lett. (submitted 1990 ).Google Scholar
  23. 23.
    Abbott, L.F., and Wise, M.B., Ap. J. Lett., 282, L47 (1984).ADSCrossRefGoogle Scholar
  24. 24.
    Bond, J.R. and Efstathiou, G, Ap. J. Lett., 285, L45 (1984).ADSCrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media Dordrecht 1991

Authors and Affiliations

  • G. F. Smoot
    • 1
  1. 1.Lawrence Berkeley Laboratory and Space Sciences LaboratoryUniversity of CaliforniaBerkeleyUSA

Personalised recommendations