Clusters of galaxies are visible tracers of the network of matter in the Universe, marking the high-density regions where filaments of dark matter join together. When observed at X-ray wavelengths these clusters shine like cosmic lighthouses, as a consequence of the hot gas trapped within their gravitational potential wells. The X-ray emission is linked directly to the total mass of a cluster, and so can be used to investigate the mass distribution for a sizeable fraction of the Universe. The picture that has emerged from recent studies is remarkably consistent with the predictions for a low-density Universe dominated by cold dark matter.
X-ray clusters of galaxies as tracers of structure in the Universe / S. Borgani, L. Guzzo. - In: NATURE. - ISSN 0028-0836. - 409:6816(2001), pp. 39-45. [10.1038/35051000]
X-ray clusters of galaxies as tracers of structure in the Universe
L. Guzzo
2001
Abstract
Clusters of galaxies are visible tracers of the network of matter in the Universe, marking the high-density regions where filaments of dark matter join together. When observed at X-ray wavelengths these clusters shine like cosmic lighthouses, as a consequence of the hot gas trapped within their gravitational potential wells. The X-ray emission is linked directly to the total mass of a cluster, and so can be used to investigate the mass distribution for a sizeable fraction of the Universe. The picture that has emerged from recent studies is remarkably consistent with the predictions for a low-density Universe dominated by cold dark matter.File | Dimensione | Formato | |
---|---|---|---|
35051000.pdf
accesso riservato
Tipologia:
Publisher's version/PDF
Dimensione
654.15 kB
Formato
Adobe PDF
|
654.15 kB | Adobe PDF | Visualizza/Apri Richiedi una copia |
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.