Abstract
PURCELL (unpublished data) has noted the tendency for ‘dust’ particles strongly to cluster when they are coupled by viscous drag to a ‘gas’ whose velocity field is stochastic: 
where α(s−1) is the viscous coupling constant. The application of the Purcell clustering effect to cosmology which is considered here generates relatively large isothermal perturbations from relatively small adiabatic perturbations which will not otherwise survive damping during recombination.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 51 print issues and online access
$199.00 per year
only $3.90 per issue
Buy this article
- Purchase on Springer Link
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
Similar content being viewed by others
References
Westervelt, P. J. acoust. Soc. Am. 22, 319 (1950).
Ingard, U. & Galehouse, D. C. Am. J. Phys. 39, 811 (1971).
Weinberg, S. Phys. Rev. Lett. (in the press).
Silk, J. Nature 215, 1115 (1967).
Peebles, P. J. E. Physical Cosmology, 220 (Princeton University Press, 1971).
Weinberg, S. Gravitation and Cosmology, 538 (Wiley, New York, 1972).
Weinberg, S. Astrophys. J. 168, 175 (1971).
Zel'dovich, Ya. B. Astr. Astrophys. 5, 84 (1970).
Sunyaev, R. A. & Zel'dovich, Ya. B. Astr. Astrophys. 20, 189 (1972).
Doroshkevich, A. G. & Shandarin, S. F. Astr. Zh. 51, 41 (1974); Sov. Astr. 18, 24 (1974).
Doroshkevich, A. G. & Shandarin, S. F. Mon. Not. R. astr. Soc. 182, 27 (1978).
Silk, J. IAU Symp. 63, 175 (1974).
Peebles, P. J. E. & Uy, J. T. Astrophys. J. 162, 816 (1970).
Smoot, G. F., Gorenstein, M. V. & Muller, R. A. Phys. Rev. Lett. 39, 898 (1977).
Peebles, P. J. E. Phys. Rev. D 1, 397 (1970).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
PRESS, W., VISHNIAC, E. Production of new cosmological perturbations during the radiation-dominated era. Nature 279, 137–139 (1979). https://doi.org/10.1038/279137a0
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1038/279137a0
This article is cited by
Comments
By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.
