The Slovenia Times

Slovenian scientists help solve mystery of cosmic rays


The Pierre Auger collaboration, which works with data collected by the Pierre Auger Observatory in Argentina, collected observational evidence demonstrating that cosmic rays with energies a million times greater than that of the protons accelerated in the Large Hadron Collider come from much further away than from our own galaxy.

Ever since the existence of cosmic rays with individual energies of several Joules was established in the 1960s, speculation has raged as to whether such particles are created there or in distant extragalactic objects.

The team featured researchers from the University of Nova Gorica and the Jo┼żef Stefan Institute and their findings were published in the high-impact scientific journal Science. The University of Nova Gorica said the result was revolutionary.

These measurements per se are insufficient to identify the actual source of the cosmic rays, but this will be the goal of a more precise follow-up study that will be possible once the observatory is upgraded in 2018.

"The upgraded observatory opens new possibilities for top-level research and international experience, including to Slovenian students," said Danilo Zavrtanik, the chancellor of the University of Nova Gorica and the head of the Slovenian team at the observatory.

The team comprises more than 400 scientists and Slovenia has been involved since its inception in 1994.


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