Sharpest universe map stems dark flow - for now

• Autores: Maggie McKee
• Localización: New scientist, ISSN 0262-4079, Nº. 2911, 2013, pág. 11
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • A potential portal to other universes seems to have closed. The sharpest map yet made of light from the infant universe shows no evidence of "dark flow"--a stream of galaxy clusters rushing in the same direction that hinted at the existence of a multiverse. That is the conclusion of 175 scientists working with data from the European Space Agency's Planck spacecraft. But champions of dark flow are not ready to give up yet, including one Planck scientist who says his team's analysis is flawed. The latest search is based on a new, higher-resolution map of the cosmic microwave background from Planck. Fernando Atrio-Barandela at the University of Salamanca in Spain argues that it is too soon to rule out dark flow entirely. A member of the Planck team, he withheld his name from his colleagues' paper because he says they overestimated the uncertainty in their measurements, making what might be a subtle signal of dark flow look like mere noise.