Dark matter maps reveal cosmic scaffolding

Richard Massey (), Jason Rhodes, Richard Ellis, Nick Scoville, Alexie Leauthaud, Alexis Finoguenov, Peter Capak, David Bacon, Hervé Aussel, Jean-Paul Kneib, Anton Koekemoer, Henry McCracken, Bahram Mobasher, Sandrine Pires, Alexandre Refregier, Shunji Sasaki, Jean-Luc Starck, Yoshi Taniguchi, Andy Taylor and James Taylor
Additional contact information
Richard Massey: California Institute of Technology MC105-24
Jason Rhodes: California Institute of Technology MC105-24
Richard Ellis: California Institute of Technology MC105-24
Nick Scoville: California Institute of Technology MC105-24
Alexie Leauthaud: Laboratoire d'Astrophysique de Marseille
Alexis Finoguenov: Max-Planck-Institut für extraterrestrische Physik, Giessenbachstraße
Peter Capak: California Institute of Technology MC105-24
David Bacon: Institute for Astronomy, Blackford Hill
Hervé Aussel: CNRS et Université de Paris VII, UMR no. 7158 CE Saclay
Jean-Paul Kneib: Laboratoire d'Astrophysique de Marseille
Anton Koekemoer: Space Telescope Science Institute
Henry McCracken: Université Pierre et Marie Curie
Bahram Mobasher: Space Telescope Science Institute
Sandrine Pires: CEA/DSM/DAPNIA/SEDI, CE Saclay
Alexandre Refregier: CNRS et Université de Paris VII, UMR no. 7158 CE Saclay
Shunji Sasaki: Ehime University
Jean-Luc Starck: CEA/DSM/DAPNIA/SEDI, CE Saclay
Yoshi Taniguchi: Ehime University
Andy Taylor: Institute for Astronomy, Blackford Hill
James Taylor: University of Waterloo

Nature, 2007, vol. 445, issue 7125, 286-290

Abstract: The unseen universe The cover shows part of the first map of the large-scale distribution of 'dark matter' in the Universe, constructed using images obtained in the largest ever survey with the Hubble Space Telescope. Dark matter is a mysterious substance that dominates the mass of the Universe, but neither emits nor reflects light, so is consequently invisible. It can be detected indirectly via gravitational lensing, the deflection of light from distant galaxies by any foreground concentrations of mass. The new map depicts a network of dark matter filaments that have grown over time and are separated by huge voids. Ordinary 'baryonic' particles (which account for only a sixth of the total mass in the Universe) subsequently build all stars, galaxies and planets inside this underlying scaffold of dark matter, during a process of gravitationally induced structure formation. (Cover image: NASA/ESA/R. Massey.)

Date: 2007
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DOI: 10.1038/nature05497

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