Professor Richard Massey r.j.massey@durham.ac.uk
Professor
The dark matter of gravitational lensing
Massey, Richard; Kitching, Thomas; Richard, Johan
Authors
Thomas Kitching
Johan Richard
Abstract
We review progress in understanding dark matter by astrophysics, and particularly via the effect of gravitational lensing. Evidences from many different directions now all imply that five sixths of the material content of the Universe is in this mysterious form, separate from and beyond the ordinary 'baryonic' particles in the standard model of particle physics. Dark matter appears not to interact via the electromagnetic force, and therefore neither emits nor reflects light. However, it definitely does interact via gravity, and has played the most important role in shaping the Universe on large scales. The most successful technique with which to investigate it has so far been the effect of gravitational lensing. The curvature of space–time near any gravitating mass (including dark matter) deflects passing rays of light—observably shifting, distorting and magnifying the images of background galaxies. Measurements of such effects currently provide constraints on the mean density of dark matter, and its density relative to baryonic matter; the size and mass of individual dark matter particles and its cross-section under various fundamental forces.
Citation
Massey, R., Kitching, T., & Richard, J. (2010). The dark matter of gravitational lensing. Reports on Progress in Physics, 73(8), Article 086901. https://doi.org/10.1088/0034-4885/73/8/086901
Journal Article Type | Article |
---|---|
Publication Date | Aug 1, 2010 |
Deposit Date | Jan 31, 2012 |
Publicly Available Date | Apr 30, 2015 |
Journal | Reports on Progress in Physics |
Print ISSN | 0034-4885 |
Electronic ISSN | 1361-6633 |
Publisher | IOP Publishing |
Peer Reviewed | Peer Reviewed |
Volume | 73 |
Issue | 8 |
Article Number | 086901 |
DOI | https://doi.org/10.1088/0034-4885/73/8/086901 |
Files
arXiv version
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arXiv version
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