Sentences with phrase «emission of the active galaxies»
The radio emission of the active galaxies was puzzling because it could not be attributed to a collection of stars and gas under normal conditions.
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One alternative is the galaxy's active nucleus, with radio emission coming from jets of material emitted from the region surrounding a supermassive black hole.
He and his colleagues focused on the K - alpha emission line of iron, visible in the spectra of many active galactic nuclei (AGN)-- the brilliant centers of these galaxies.
Active galaxies turned out to be among the brightest sources of X-ray emission in the sky.
The top candidates, the astronomers suggested, are a neutron star, possibly a highly - magnetic magnetar, surrounded by either material ejected by a supernova explosion or material ejected by a resulting pulsar, or an active nucleus in the galaxy, with radio emission coming from jets of material emitted from the region surrounding a supermassive black hole.
In active galaxies, a region near the center produces enormous amounts of emission across the entire electromagnetic spectrum.
The «active» part of the galaxy is the supermassive black hole in its core, which spews out strong jets of energetic particles that produce enormous lobes of radio emission.