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Issue A&A
Volume 373, Number 2, July II 2001
Page(s) 377 - 380
Section Cosmology
DOI http://dx.doi.org/10.1051/0004-6361:20010637



A&A 373, 377-380 (2001)
DOI: 10.1051/0004-6361:20010637

Cosmological constant and the fate of the DDM theory

M. M. Cirkovic1 and S. Samurovic2

1  Astronomical Observatory, Volgina 7, 11000 Belgrade, Yugoslavia
2  Dipartimento di Astronomia, Università di Trieste, Via Tiepolo 11, 34131 Trieste, Italy
    e-mail: srdjan@ts.astro.it

(Received 3 April 2001 / Accepted 2 May 2001)

Abstract
We investigate the impact of the non-zero cosmological constant on the classical decaying dark matter theory developed by the late Dennis Sciama. In particular, we concentrate on the change in relevant values of cosmological parameters in comparison to the high-precision estimates given by Sciama (1997). It is shown that the appropriate changes in resulting parameter values are such to make the DDM concept less plausible. This is in complete agreement with recently reported observational results detrimental to this theory.


Key words: elementary particles -- cosmology: dark matter -- cosmology: diffuse radiation -- distance scale

Offprint request: M. M. Cirkovic, mcirkovic@aob.aob.bg.ac.yu




© ESO 2001


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