There were indications of an unusual structure in the region for the first time in 2004, explains study leader Rudnick. At that time, the WMAP satellite had measured the strength and temperature of the cosmic background radiation, the electromagnetic radiation that developed according to popular theory shortly after the Big Bang and today conveys a kind of baby picture of the young universe. Exactly at the point now identified as a hole, the WMAP map found an area where the background radiation temperature was a few millionths of a degree lower than in the surrounding area. This could in principle have two reasons, explains Rudnick: Either it indicates an irregularity in the background radiation itself and thus a phenomenon of the early Universe, or the radiation cools when crossing the region, which rather for an unusual structure in the region speaking.
Apparently the second explanation is correct, Rudnick and his team now conclude by evaluating data from the NRAO VLA Sky Survey, a project in which the "Very Large Array" interferometer in the US state of New Mexico recorded images of the entire visible part of the sky, It can be clearly seen that the number of galaxies in the cooler zone drops significantly compared to the environment. In combination with what was previously known about the energy distribution of the cosmic background radiation, this would only allow the conclusion that there is a gigantic emptiness in the region, explains Rudnick.Message from the University of Minnesota ddp / science.de? Ilka Lehnen-Beyel advertisement