Quasars stands for "quasistellar radio sources" are strong radio
signals from sources having small angular dimensions. They were first
detected in 1960 by radio astronomers using radio telescopes with high
resolution (ability to distinguish the separation of two points).
Quasars are very small, appear to be blue and have absolute magnitudes
of -25. (The Sun is +4.83) So they are extremely bright. This
evidence points to the theory that the "powerhouse of quasar energy is
a super massive black hole at the center of the quasar. The quasar
PC1247 + 3406 is the most distant and the brightest object in the known
universe.
Quasars have extremely large red shifts. They are moving away
at tremendous rates. The red shift of PC1247 + 3406 is 4.9 indicates
a distance of 13.5 billion light years from Earth. They are probably
at the center of the Universe. The closest known Quasar is 600 million
light years in the radio galaxy Cygnus A. They also emit tremendous
amounts of electromagnetic radiation (energy) at all wave lengths.
For more information about Quasars click here:
Information about
Quasars and here: Quasars
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