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BL Lacertae objects |
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BL Lacertae objects [¦bē¦el lə′ser·tē ‚äb·jiks] (astronomy) A class of extragalactic sources of extremely intense, highly variable electromagnetic radiation which are related to quasars but have a featureless optical spectrum, and display strong optical polarization and a radio spectrum that increases in intensity at shorter wavelengths. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| The intensity of gamma radiation from each source -- quasar relatives called BL Lac objects -- represents 10 trillion times the output of the sun at all wavelengths. |
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