Access
To read this story in full you will need to login or make a payment (see right).
Letters to Nature
Nature 427, 45-47 (1 January 2004) | doi:10.1038/nature02139; Received 15 April 2003; Accepted 8 October 2003
Open Innovation Challenges
-
Optimizing Sub-cellular Localization Tags
The Seeker is looking for methods to optimize sub-cellular localization tags for protein expression....
-
Direct Molecular Detection of Proteins and Nucleic Acids
This Challenge is looking for novel approaches to protein and nucleic acid detection. This is an Id...
nature jobs
Early Career Visitors
- The Mathematical Biosciences Institute
- Ohio, USA
Multimedia Programmer
- Indegene Lifesystems Pvt. Ltd
- Bengaluru 560 071 India
A correlation between the cosmic microwave background and large-scale structure in the Universe
Stephen Boughn1 & Robert Crittenden2
- Department of Astronomy, Haverford College, Haverford, Pennsylvania 19041, USA
- Institute of Cosmology and Gravitation, University of Portsmouth, Portsmouth PO1 2EG, UK
Correspondence to: Robert Crittenden2 Email: Robert.Crittenden@port.ac.uk
Abstract
Observations of distant supernovae and the fluctuations in the cosmic microwave background (CMB) indicate that the expansion of the Universe may be accelerating1 under the action of a 'cosmological constant' or some other form of 'dark energy'. This dark energy now appears to dominate the Universe and not only alters its expansion rate, but also affects the evolution of fluctuations in the density of matter, slowing down the gravitational collapse of material (into, for example, clusters of galaxies) in recent times. Additional fluctuations in the temperature of CMB photons are induced as they pass through large-scale structures2 and these fluctuations are necessarily correlated with the distribution of relatively nearby matter3. Here we report the detection of correlations between recent CMB data4 and two probes of large-scale structure: the X-ray background5 and the distribution of radio galaxies6. These correlations are consistent with those predicted by dark energy, indicating that we are seeing the imprint of dark energy on the growth of structure in the Universe.
To read this story in full you will need to login or make a payment (see right).
MORE ARTICLES LIKE THIS
These links to content published by NPG are automatically generated.
NEWS AND VIEWS
Cosmology Filling in the backgroundNature News and Views (06 Mar 2003)
Cosmology New troubles for inflation?Nature News and Views (15 Oct 1998)
See all 16 matches for News And ViewsRESEARCH
Direct observation of structure in the cosmic microwave backgroundNature Article (27 Jan 1994)
Anisotropy measurements of the cosmic microwave background radiation at intermediate angular scalesNature Article (25 Jun 1992)
See all 35 matches for Research
