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  • gamma-ray burst
    gamma-ray burst
    noun
    a short-lived, extremely luminous burst of gamma radiation from an unknown astronomical source, occurring at random positions in the sky several times a day. GRB
  • gamma ray burst
    gamma ray burst
    Intense high-energy electromagnetic radiation, lasting between a fraction of a second and several minutes, emanating from distant regions of the universe. Recent theory suggests that they result from supernova explosions.

gamma-ray burst

American  

noun

  1. a short-lived, extremely luminous burst of gamma radiation from an unknown astronomical source, occurring at random positions in the sky several times a day. GRB


gamma-ray burst British  

noun

  1. astronomy an intense but short-lived burst of gamma rays from an unknown celestial source. First detected in 1970, they have since been found to be widely distributed in the sky

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

gamma ray burst Scientific  
  1. Intense high-energy electromagnetic radiation, lasting between a fraction of a second and several minutes, emanating from distant regions of the universe. Recent theory suggests that they result from supernova explosions.


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

In this case, had the observations been performed even just a day later, there would not have been such strong proof that this was indeed a magnetar and not a gamma-ray burst.

From Science Daily • Apr. 24, 2024

First detected by Fermi in March, it is the second brightest GRB observed in over 50 years of observations, about 1,000 times brighter than a typical gamma-ray burst that Fermi observes.

From Science Daily • Oct. 25, 2023

Last year, astronomers detected the brightest explosion on record, a gamma-ray burst known as GRB 221009A, which lasted just over ten hours.

From BBC • May 12, 2023

"So, there's a reasonable chance this is the brightest gamma-ray burst to hit Earth since human civilization began."

From Scientific American • Mar. 29, 2023

The gamma-ray burst would have stripped away the Earth’s ozone layer causing intense ultraviolet radiation from the sun and may account for climate changes observed at the time.

From Textbooks • Jan. 1, 2015

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