world rank. 1639. Overview. Founded in 1970, Universidade Estadual de Londrina (State University of Londrina) is a non-profit public higher education institution located in the the urban setting of the small city of Londrina (population range of 250,000-499,999 inhabitants), Parana.
Scientists have hotly debated whether the bursts are cosmological -- from the edge of the universe -- or galactic, from within the Milky Way. Now we have strong evidence that most gamma ray bursts come from within our galaxy, Lamb said. The 25-year-old question about where the bursts originate may finally be answered.. Lamb said the evidence that the bursts are galactic in origin was a surprise, and certainly not something I was confident of initially..
Gamma ray burst is a source of a particular type of cosmic rays. Cosmic rays are high-energy particles arriving at Earth from sources that lie outside it. What exactly is high energy in this definition is not well defined. Practically any stable particle can be a cosmic ray. Thus you may have photons (gamma rays), electrons, protons, nuclei, neutrinos... The most common type of cosmic rays detected on Earth are actually protons. It has to do with the fact, that a high energy proton can travel very large distances without losing significant energy.