Utah scientists announce a proposed expansion for their cosmic ray observatory, to speed up studies of a mysterious source of ultrahigh-energy cosmic rays.
A year ago, an international team of 125 scientists – including 32 from the University of Utah – announced the discovery of a cosmic ray hotspot, apparently the source of more incoming ultrahigh-energy cosmic rays than another other location in our sky. Today (June 15, 2015), University of Utah announced a planned $6.4 million expansion of its $25 million Telescope Array observatory with the goal of zeroing in on the hotspot and figuring out what it might be.
Japan has committed $4.6 million, and University of Utah scientists are seeking another $1.8 million, to nearly quadruple the size of the existing 300-square-mile (777-square-km) cosmic ray observatory in the desert west of Delta, Utah.
They say the expansion will let them take the next step in identifying what objects in space produce ultrahigh-energy cosmic rays. … (EarthSky)