So What Are Quasars?

[Racoon]

I'm really getting into this Star and Astronomy stuff! :)

 

What are Quasars then, if they are not stars? :D :eek:

Quasi Stellar Objects, yes.

 

But what does that mean? and How is that significant?

What do we know?

 

I'm asking here first, because you guys are smart. And I am busy keeping up with other research. So any information is highly appreciated! :)

[Jay-qu]

I went to a lecture last year and they said they are super massive galactic black holes! they reside in the center of galaxies and have the mass of thousands of solar masses :D they are so bright because as the mass falls into it and gets accelerated towards the black hole, it emits radiation in the x-ray range I think it was :)

[Tarantism]

A quasar (contraction of QUASi-stellAR radio source) is an astronomical source of electromagnetic energy, including light, that dwarfs the energy output of the brightest stars. A quasar may readily release energy in levels equal to the output of hundreds of average galaxies combined. In optical telescopes, a quasar looks like a very faint star (i.e. it is a point source), and has a very high redshift. The general consensus is that this high redshift is cosmological, the result of Hubble's law, which implies that quasars must be very distant and hence very luminous.

 

Some quasars display rapid changes in luminosity, which implies that they are small (an object cannot change faster than the time it takes light to travel from one end to the other; but see quasar J1819+3845 for another explanation). The highest redshift currently known for a quasar is 6.4. [1]

 

if you wanna read the rest of the article, here is the link:

http://en.wikipedia.org/wiki/Quasars

[Harry Costas]

Hello racoon

 

I hope the following images gives you some idea of what a quasar is.

images of quasars

http://antwrp.gsfc.nasa.gov/apod/ap961125.html

http://antwrp.gsfc.nasa.gov/apod/ap951022.html

http://antwrp.gsfc.nasa.gov/apod/ap951023.html

 

http://antwrp.gsfc.nasa.gov/apod/ap031128.html

 

 

quote

"The nearest quasars are now known to be supermassive black holes in the centers of galaxies"

http://antwrp.gsfc.nasa.gov/apod/ap030520.html

 

this is interesting

http://antwrp.gsfc.nasa.gov/apod/ap010905.html

[Harry Costas]

Hello Recoon

 

ooops I forgot this link

 

Frequently Asked Questions About

Quasars

http://www.phys.vt.edu/~jhs/faq/quasars.html

quote:

 

"It is thought the infall of matter into the supermassive black hole can result in very hot regions where huge energies are released, powering the quasar (i.e., producing the emitted light, etc.)."

[Racoon]

Thanks guys! Jay, (((Tart))), and Harry Costas :); I appreciate the input .

 

Quasars are Awesome!! :omg: >>> :shrug: :cup:

[Harry Costas]

Hello Racoon

 

So do you have an Idea now what a quasar is.

[Jim Colyer]

Are quasars galaxies falling into black holes?

[Harry Costas]

Hello Jim

 

See the above links for more deatail.

 

A quarsar is a star like body. The light affects outside the black hole is a quarsar

 

reapeated links

I hope the following images gives you some idea of what a quasar is.

images of quasars

http://antwrp.gsfc.nasa.gov/apod/ap961125.html

http://antwrp.gsfc.nasa.gov/apod/ap951022.html

http://antwrp.gsfc.nasa.gov/apod/ap951023.html

 

http://antwrp.gsfc.nasa.gov/apod/ap031128.html

 

 

quote

"The nearest quasars are now known to be supermassive black holes in the centers of galaxies"

http://antwrp.gsfc.nasa.gov/apod/ap030520.html

 

this is interesting

http://antwrp.gsfc.nasa.gov/apod/ap010905.html

--------------------------------------------------------------------

take time to see the links

-------------------------------------------------------------------- A quarsar is not a galaxy.

[Racoon]

Super-massive black holes >> center of galaxies

 

The gas and dust that falls toward the quasars is what gives it its glow.

right?

 

What makes the dust and gas glow?

And where does it go when it gets pulled into a Quasar? :evil:

[Jay-qu]

when electrons get accelerated they emit radiation, faster accel more powerful radiation. Falling into a blackhole creates quite a large acceleration, hence very bright radiation :evil:

[Racoon]

when electrons get accelerated they emit radiation, faster accel more powerful radiation. Falling into a blackhole creates quite a large acceleration, hence very bright radiation :eek:

 

is that alpha, beta , gamma, or another tasty cocktail?

Would the different glows be different radiation? or light reflection?

 

or Is that a combination of other atoms?

a little Helium, a little Xenon?

 

Then where does it all go?

Or is that what we don't know? :evil:

 

Does it get spit back out into another Galaxy or Universe?

[Jay-qu]

It is electromagnetic radiation, light, though it doesnt have to lie in the visible spectrum so the question of colour becomes meaningless.

[Racoon]

It is electromagnetic radiation, light, though it doesnt have to lie in the visible spectrum so the question of colour becomes meaningless.

 

electromagnetic radiation. :evil:

 

But I wouldn't say the color becomes meaningless?

It makes it real pretty! :eek:

[Jay-qu]

Prettyness is in the eye of the beholder, if the beholder is not using an x-ray or gamma ray detector they will not see anything!

[Racoon]

Prettyness is in the eye of the beholder, if the beholder will not see anything!

 

Imagine. :star:

http://antwrp.gsfc.nasa.gov/apod/ap030520.html

[Jay-qu]

yes imagine looking up into the sky and seeing that - there would be so many car crashes, :star: its bad enough at the moment, im driving along and I see a bright star or the moon and get momentarily distracted! not good