more »
(Phys.org) —The most luminous galaxies in our universe are not particularly bright in the visible. Most of their energy output (which can be hundreds or even thousands of times more than our Milky Way's) is emitted at infrared wavelengths. The power source of these galaxies is hyperactive bursts of star formation and/or activity around a massive black hole at a galaxy's nucleus, a so-called active galactic nucleus (AGN). The radiation from these processes is absorbed by dust that then re-emits it in the infrared. Astronomers suspect that many normal galaxies, even including our own, have undergone a phase of luminous activity at some time in their past.
Zazzle Space market place
(Phys.org) —The most luminous galaxies in our universe are not particularly bright in the visible. Most of their energy output (which can be hundreds or even thousands of times more than our Milky Way's) is emitted at infrared wavelengths. The power source of these galaxies is hyperactive bursts of star formation and/or activity around a massive black hole at a galaxy's nucleus, a so-called active galactic nucleus (AGN). The radiation from these processes is absorbed by dust that then re-emits it in the infrared. Astronomers suspect that many normal galaxies, even including our own, have undergone a phase of luminous activity at some time in their past.
Zazzle Space market place
No comments:
Post a Comment