extragalactic background light

名词 n.
中文释义

英文释义

名词 n.
  1. All the accumulated radiation in the universe due to star formation processes, plus a contribution from active galactic nuclei (AGNs). uncountable
    — An international group of researchers has developed a new way to measure accurately the extragalactic background light (EBL) that fills the universe. The technique involves measuring the attenuation of high-energy gamma rays from distant blazars and it could improve our understanding of how galaxies form and evolve, as well as how the universe has expanded since the Big Bang

词源

From extragalactic + background + light.
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