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bystander
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by bystander » Thu May 01, 2014 1:53 am
Caltech: IGM Unveiled: Cosmic Web Imager Directly Observes 'Dim Matter'
Caltech astronomers have taken unprecedented images of the intergalactic medium (IGM)—the diffuse gas that connects galaxies throughout the universe—with the Cosmic Web Imager, an instrument designed and built at Caltech. Until now, the structure of the IGM has mostly been a matter for theoretical speculation. However, with observations from the Cosmic Web Imager, deployed on the Hale 200-inch telescope at Palomar Observatory, astronomers are obtaining our first three-dimensional pictures of the IGM. The Cosmic Web Imager will make possible a new understanding of galactic and intergalactic dynamics, and it has already detected one possible spiral-galaxy-in-the-making that is three times the size of our Milky Way. ...
IGM Emission Observations with the Cosmic Web Imager:
- I. The Circum-QSO Medium of QSO 1549+19, and Evidence for a Filamentary Gas Inflow - D. Christopher Martin et al
- II. Discovery of Extended, Kinematically-Linked Emission around SSA22 Lyman-alpha Blob 2 - D. Christopher Martin et al
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