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单词 blazar
释义

blazar

/ˈbleɪzɑː /
noun Astronomy
A type of quasar that is an intense, irregularly variable source of highly polarized light, thought to arise from a plasma jet pointing in the direction of the earth: at the blazar’s heart is a supersized black hole with a mass millions to billions of times that of the sun...
  • In this study, the researchers focused on distinctive galaxies called blazars, which are several billion light years away.
  • To match the amount of energy given off by a typical blazar in one second, the sun must shine for 317,000 years.
  • What makes a blazar so bright is that one of these particle jets happens to be aimed almost straight at us.

Origin

1980s: from blaze1, on the pattern of quasar, with bl- echoing the name BL Lac object.

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更新时间:2024/9/22 13:31:07