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Why do astronomers think that quasars represent an early stage of galactic evolution?
Wiki User
∙ 14y ago
There are more quasars in faraway galaxies, i.e., in the distant past.
There are more quasars in faraway galaxies, i.e., in the distant past.
There are more quasars in faraway galaxies, i.e., in the distant past.
There are more quasars in faraway galaxies, i.e., in the distant past.
Wiki User
∙ 14y ago
Wiki User
∙ 13y agoNot as mysterious as they used to be. It is now known they are powered by gigantic black holes. Some details of how they work aren't known yet, though. For a start, it isn't known how a gigantic black hole could form so quickly in the first place - so that a young galaxy, that just formed a few hundred million years ago, already has a huge black hole at its core.
Wiki User
∙ 14y agoThere are more quasars in faraway galaxies, i.e., in the distant past.
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What do astronomers use to study quasars?
Scientists use radio waves to study distant quasars because quasars emit large amounts of radio waves but not much visible light.
What is the temperature of quasars?
Quasars are thought to be galactic black holes which are releasing focused energy from an accretion disk. The temperature could be as high as hundreds of millions of kelvins, but is detected due to its extremely high luminosity.
How do quasars affect the universe?
Quasars are some of the most distant and luminous bodies we can observe. Since we measure them to be incredibly far from our own galaxy, in the order of billions of light-years, astronomers believe that they are several billions of years old as their light would have taken that long to travel to us. Astronomers think that they may be young galaxies as the appear to be incredibly bright balls of accreting gas that probably have black holes at their cores. Because quasars give off characteristic pulses of light at regular intervals, astronomers use them as "standard candles" to measure the redshifts (how quickly they are moving away from us) of other extremely distant objects.
What is a very energetic distant object that may be powered by a black hole?
Quasars or active galactic nuclei are thought to generate high energy relativistic jets at their poles, powered by a black hole.
Why are there no quasars left?
Quasars still exist.
What do astronomers use to study quasars?
Scientists use radio waves to study distant quasars because quasars emit large amounts of radio waves but not much visible light.
What is the temperature of quasars?
Quasars are thought to be galactic black holes which are releasing focused energy from an accretion disk. The temperature could be as high as hundreds of millions of kelvins, but is detected due to its extremely high luminosity.
This theory lost its appeal when astronomers discovered quasars and cosmic background radiation?
In Cosmic Physics for $1000, Alex, "What is the Steady State Universe?"
How do quasars affect the universe?
Quasars are some of the most distant and luminous bodies we can observe. Since we measure them to be incredibly far from our own galaxy, in the order of billions of light-years, astronomers believe that they are several billions of years old as their light would have taken that long to travel to us. Astronomers think that they may be young galaxies as the appear to be incredibly bright balls of accreting gas that probably have black holes at their cores. Because quasars give off characteristic pulses of light at regular intervals, astronomers use them as "standard candles" to measure the redshifts (how quickly they are moving away from us) of other extremely distant objects.
What emits extremely large quantities of energy?
Quasars emit more energy than anything else in the universe. Quasars are massive black holes at the cores of some galaxies, swallowing matter and stars and ejecting them out collimated bipolar jets of matter and radiation which stretch out hundreds of thousands of light years. Since there are quasars in galaxies close by, these indicate the evolution of our universe.
What is a very energetic distant object that may be powered by a black hole?
Quasars or active galactic nuclei are thought to generate high energy relativistic jets at their poles, powered by a black hole.
Why are there no quasars left?
Quasars still exist.
Are distant objects in space called quarks or quasars?
quasars
How are quasars and black hole different?
One might say a quasar is a highly luminous area powered by a particularly massive black hole. Quasars were once mysterious; the general agreement now is that quasars are active galactic nuclei, whose emissions are powered by the supermassive black hole in the galactic center, the area around the black hole including the accretion disk and polar jets being detectable at great distances due to the immense energy these release. Black holes, by contrast, are not intrinsically luminous; in fact, they earn their name in that they absorb light that falls into them never to be released, and detectable only by their gravitational influence on other bodies, infalling matter, secondary effects, etc.
Are quasars part of your solar system?
No. Quasars are at the centers of distant galaxies.
How a quasars are formed?
Quasars are thought to be distant super-massive black holes.
What year were quasars first discovered?
The first quasars were discovered in the 1950's
