Are quasars made up of dark matter?

[petrushka.googol]

With respect to quasars -

 

do they define the limits of the universe that we know?

 

are they made up of dark matter?

 

in an accelerating universe do they approach the speed of iight and acquire the status of supermassiv e black holes?

 

Please shed some light on this issue.

 

thanks in advance.

[EdEarl]

With respect to quasars -

 

do they define the limits of the universe that we know?

 

are they made up of dark matter?

 

in an accelerating universe do they approach the speed of iight and acquire the status of supermassiv e black holes?

 

Please shed some light on this issue.

 

thanks in advance.

Wikipedia is a good start: https://en.wikipedia.org/wiki/Quasar

 

They are thought to be black holes in the center of a galaxy consuming matter, and ejecting some of the excess.

[Airbrush]

With respect to quasars -

 

do they define the limits of the universe that we know?

 

are they made up of dark matter?

 

in an accelerating universe do they approach the speed of iight and acquire the status of supermassiv e black holes?

 

Please shed some light on this issue.

 

thanks in advance.

 

All quasars we see are very far away because they were more common in the early universe. Quasars and very distant galaxies define the limits of the observable universe.

 

Quasars are not made of dark matter, but rather reside at the center of very distant galaxies.

 

They are receding from us at near light speed, and some quasars may exist beyond our visual limits because they are receding from us at greater than light speed. Quasars ARE supermassive black holes that are actively feeding.

 

Quasars "shed" a lot more light that we can here.

 

You should try looking up things on Wikipedia.org before asking such basic questions.

 

"When in doubt, wiki it out."

Edited October 8, 2013 by Airbrush

[Archimedes]

Airbrush Said it all. Quasars are not dark matter, and have nothing to do with it.

 

Quasars are super massive black holes. When a black hole feeds, they sometimes eject excess material when too much is entering at one time.

[imatfaal]

in an accelerating universe do they approach the speed of iight and acquire the status of supermassiv e black holes?

Airbrush has answered the rest. Going very quickly does not make things turn into a black hole. In it's own frame it is not moving has no extra mass or energy from any so therefore can not be a black hole; things cannot be a black hole in one frame of reference and be a black hole in another.

 

http://www.desy.de/user/projects/Physics/Relativity/BlackHoles/black_fast.html

All quasars we see are very far away because they were more common in the early universe. Quasars and very distant galaxies define the limits of the observable universe.

Surely that would be the CMBR / Surface of Last Scattering. It is the most red-shifted and oldest thing we can (theoretically?) observe with any band of electromagnetic radiation as the universe was opaque before then. To see beyond/older than the CMBR we have to use something that the universe of 300000 years old was transparent to - gravity waves? neutrinos?

They are receding from us at near light speed, and some quasars may exist beyond our visual limits because they are receding from us at greater than light speed.

Anything with a redshift of 1.4 or greater is already expanding the distance between sol and itself at such a rate that any light emitted will never be able to cross the gap (the light we are seeing now was emitted billions of years ago when the gap was still bridgeable.) There are definitely Quasars that are increasing the distance between the local group and themslves faster than light. And we can technically still see them!

[Airbrush]

"...Surely that would be the CMBR / Surface of Last Scattering. It is the most red-shifted and oldest thing we can (theoretically?) observe with any band of electromagnetic radiation as the universe was opaque before then. To see beyond/older than the CMBR we have to use something that the universe of 300000 years old was transparent to - gravity waves? neutrinos?"

 

That is correct. The CMBR is still visible, approximately 50% further away than the most distant visible quasar or galaxy. Interesting about seeing earlier than 300,000 years after the big bang using gravity waves or neutrinos. My question is how can we see things using neutrinos if they are so ghost-like that they pass through anything, even through light years thick of solid lead, like it is not even there?

Edited October 9, 2013 by Airbrush

[imatfaal]

"...Surely that would be the CMBR / Surface of Last Scattering. It is the most red-shifted and oldest thing we can (theoretically?) observe with any band of electromagnetic radiation as the universe was opaque before then. To see beyond/older than the CMBR we have to use something that the universe of 300000 years old was transparent to - gravity waves? neutrinos?"

 

That is correct. The CMBR is still visible, approximately 50% further away than the most distant visible quasar or galaxy. Interesting about seeing earlier than 300,000 years after the big bang using gravity waves or neutrinos. My question is how can we see things using neutrinos if they are so ghost-like that they pass through anything, even through light years thick of solid lead, like it is not even there?

 

If we can find some way of noticing their passage - other than the annoyingly infrequent methods we have today - it will be because we understand their interactions more; thus if we can observe them by interacting then we would hope that the stellar large scale arrangement will have also interacted with them. ie if we can detect them reliably then they will be interactive enough to give us information. Also bearing in mind that the information will be necessarily very amorphous and fuzzy as this was a period before reassociation of hydrogen atoms let alone any decent size things. But it might give us a bit more of a clue about the asymmetries that caused everything to start coalescing.

[Airbrush]

Thinking over the opening question: "Are quasars made up of dark matter?" in a way, yes, quasars are made BY dark matter. If it wasn't for dark matter, the concentrations of matter necessary for a supermassive black hole to form would not be possible. Because of dark matter, galaxies form and the center has sufficiently high density for SBHs to form.

[Гера�им]

All the visible matter came from a dark matter with which the vacuum is filled.Quasare not exception

[EdEarl]

All the visible matter came from a dark matter with which the vacuum is filled.Quasare not exception

Reference?

[Гера�им]

Reference?

The Big Bang created the dark matter is dark matter contained in a vacuum, it gives a energy protons and electrons creating a visible matter.

[EdEarl]

The Big Bang created the dark matter is dark matter contained in a vacuum, it gives a energy protons and electrons creating a visible matter.

This is not a reference, it is more speculation. Are you the only one making this claim, or have you read something, if you have read something, provide a reference, a link, or citation of which book you got it from.

[Гера�им]

Dark matter on that and dark beacouse we know a little.The Big Bang was from where so much space, which not empty. If it is correctly to write officially without the reasoning it is uninteresting.You don't becom angry