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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.

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

Scientists have observed the creation of rare chemical elements in the second-brightest gamma-ray burst ever seen -- casting new light on how heavy elements are made.

From Science Daily • Oct. 25, 2023

Even though that is quite long for a GRB, it means that AT2021lwx has put out far more energy over its entire lifetime than this gamma-ray burst did in its own.

From Scientific American • May 16, 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

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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