Small Scale Isotropy of the Cosmic Microwave Background AT 230 GHz

  • E. Kreysa
  • R. Chini
Conference paper
Part of the Astrophysics and Space Science Library book series (ASSL, volume 155)


We observed a sample of 25 radio-quiet quasars at 230 GHz with the IRAM 30m-telescope. Most of the sources show no emission down to a flux density level of 1 mJy. The implications of this result for radio-quiet quasars will be discussed in a forthcoming paper [Chini et al. 1988]. Here we use the same data in order to derive upper limits for the small scale anisotropy of the cosmic microwave background radiation at 230 GHz.


Cosmic Microwave Background Active Galactic Nucleus Flux Density Level Stable Atmospheric Condition Bolometer Array 
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.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Baars, J.W.M., et al. 1987, Astron. Astrophys. 175, 319.ADSGoogle Scholar
  2. Boynton, P.E. and Partridge, R.B. 1973, Ap. J. 181, 243.ADSCrossRefGoogle Scholar
  3. Chini, R., et al. 1988, Astron. Astrophys., submitted.Google Scholar
  4. Kreysa, E. 1985, Proc. URSI Symp. ‘MM- and Submm Wave Radio Astronomy’, Granada, p. 153.Google Scholar
  5. Neugebauer, G., et al. 1986, Ap. J. 308, 815.ADSCrossRefGoogle Scholar
  6. Uson, M.J. and Wilkinson, D.T., 1984, Ap. J. 283, 471.ADSCrossRefGoogle Scholar

Copyright information

© Kluwer Academic Publisher 1989

Authors and Affiliations

  • E. Kreysa
    • 1
  • R. Chini
    • 1
  1. 1.Max-Planck-Institut für RadioastronomieBonn 1Germany

Personalised recommendations