#1 Posted by umbrafeline (5300 posts) - - Show Bio

http://news.yahoo.com/obese-black-hole-galaxies-could-reveal-quasar-secrets-142834176.html

Gluttonous black holes in the center of some galaxies could be precursors to the brightest objects in the known universe.

A recently proposed type of galaxy with an overwhelmingly large black hole in its center could give astronomers a better understanding of the formation of quasars — bright objects in galaxies with supermassive black holes. The centers of these obese black-hole galaxies (OBGs) could harbor black holes so massive that radiation from where the black hole accretes would overwhelm that of the stars within its galaxy.

New research indicates that some of the most luminous quasars seen from Earth were likely OBGs first before something "lit up" the black hole and had it pump out energy visible from Earth. [Images: Black Holes of the Universe]

The simulations indicate there could be a million OBGs in the observable universe, making the team behind the work ask, why don't we see them?

Tanking up

The team, led by scientists from the Max Planck Institute for Extraterrestrial Physics in Germany, was trying to figure out why astronomers can see quasars from a very far away, at the beginning of the universe. (More distant objects are older and have less metal in them.)

"People have hypothesized there could be these black holes forming from this metal-free gas reservoir ... which is completely free of stars," said Bhaskar Agarwal, a doctoral research fellow at Max Planck who led the research.

This means the black holes in OBGs could have formed separately from the stars surrounding them, contradicting recent observations by the Herschel Space Observatory. In that earlier finding, astronomers suggested that galaxies that have black holes in their center — including the Milky Way — see the stars and black holes evolve together.

Other research, including observational research, also shows OBG-like objects with a very massive black hole at the center of the galaxy, Agarwal told SPACE.com.

But if the black holes in OBGs formed solo from a reservoir of gas, the stars must have come from somewhere. The simulations suggested the black hole would have remained on its own until a merger between galaxies brought stars within its vicinity.

Halting star formation

The astronomers' simulations showed there could be a million of those OBGs within the observable universe. Many of them, however, would be invisible with conventional searches; most black holes are seen through the X-rays they produce when they gobble up matter. If there were no matter to feed on, the black hole would remain silent.

OBGs also could have an environment where stars evolved slower than usual. OBGs form in the presence of radiation from a nearby galaxy — sometimes, the one that merges to bring stars near the black hole, or sometimes, a nearby galaxy.

That same radiation also delays star formation in other metal-free galaxies. How this affects OBG evolution is not exactly known, however. The team is working on a more advanced simulation that takes into account the metallicity of stars within an OBG.

"The only thing we did not treat in this model was propagation of metals in a galaxy to black-hole collapse in the first place," Agarwal said.

If an OBG's black hole is active, the spectral energy distribution could be visible with instruments aboard the James Webb Space Telescope that can peer into the near- and mid-infrared spectra of light — with a resolution able to see to the edge of the universe.

Observations, though, would have to wait until at least 2018, when James Webb is supposed to make it into orbit.

The results were published in the Monthly Notices of the Royal Astronomical Society by Oxford University Press on May 29. Participating researchers came from Max Planck, Yale University and the University of Edinburgh.

#2 Posted by SandMan_ (4528 posts) - - Show Bio

...

#3 Posted by isaac_clarke (5448 posts) - - Show Bio

@sandman_: The biggest Silver Surfer fanboy - I wouldn't be surprised if scientists discover tons of SS memorabilia in Quasar's room.

#4 Posted by SandMan_ (4528 posts) - - Show Bio
#5 Edited by isaac_clarke (5448 posts) - - Show Bio

@sandman_ said:

@isaac_clarke: You are referring to Quasar right?

Yep - quite literally his dialogue when around the Surfer really gives the reader the impression that the Silver Surfer's #1 fan is Quasar himself.

#6 Edited by umbrafeline (5300 posts) - - Show Bio
#7 Edited by The Stegman (24627 posts) - - Show Bio

Damn..you ain't gotta call em Obese, black holes having feelings too.

#8 Edited by SandMan_ (4528 posts) - - Show Bio
#9 Edited by Glitch_Spawn (17132 posts) - - Show Bio

Damn..you ain't gotta call em Obese, black holes having feelings too.

No they don't. Neutron stars have feelings. Supernovas have feelings. Gamma Ray Bursts and Nebulas have feelings but not Black Holes. Especially the fatties!

Okay I'm done. : )

#10 Posted by The Stegman (24627 posts) - - Show Bio

@the_stegman said:

Damn..you ain't gotta call em Obese, black holes having feelings too.

No they don't. Neutron stars have feelings. Supernovas have feelings. Gamma Ray Bursts and Nebulas have feelings but not Black Holes. Especially the fatties!

Okay I'm done. : )

Spacist, I bet you think Black Holes should stay separated from the rest of the galaxies too huh?

#11 Posted by Glitch_Spawn (17132 posts) - - Show Bio

@glitch_spawn said:

@the_stegman said:

Damn..you ain't gotta call em Obese, black holes having feelings too.

No they don't. Neutron stars have feelings. Supernovas have feelings. Gamma Ray Bursts and Nebulas have feelings but not Black Holes. Especially the fatties!

Okay I'm done. : )

Spacist, I bet you think Black Holes should stay separated from the rest of the galaxies too huh?

Yep. They need to use different cosmic bathrooms and eat in crushing singularity exclusive restaurants.

Away from all the spiral and cluster galaxies. By themselves. Alone.

#12 Posted by SandMan_ (4528 posts) - - Show Bio

@the_stegman said:

@glitch_spawn said:

@the_stegman said:

Damn..you ain't gotta call em Obese, black holes having feelings too.

No they don't. Neutron stars have feelings. Supernovas have feelings. Gamma Ray Bursts and Nebulas have feelings but not Black Holes. Especially the fatties!

Okay I'm done. : )

Spacist, I bet you think Black Holes should stay separated from the rest of the galaxies too huh?

Yep. They need to use different cosmic bathrooms and eat in crushing singularity exclusive restaurants.

Away from all the spiral and cluster galaxies. By themselves. Alone.

What about that world eater guy?

#13 Posted by Glitch_Spawn (17132 posts) - - Show Bio

@sandman_: Galactus can keep has big fat nose out of this!

#14 Posted by SandMan_ (4528 posts) - - Show Bio
#15 Posted by The Stegman (24627 posts) - - Show Bio

@the_stegman said:

@glitch_spawn said:

@the_stegman said:

Damn..you ain't gotta call em Obese, black holes having feelings too.

No they don't. Neutron stars have feelings. Supernovas have feelings. Gamma Ray Bursts and Nebulas have feelings but not Black Holes. Especially the fatties!

Okay I'm done. : )

Spacist, I bet you think Black Holes should stay separated from the rest of the galaxies too huh?

Yep. They need to use different cosmic bathrooms and eat in crushing singularity exclusive restaurants.

Away from all the spiral and cluster galaxies. By themselves. Alone.

Separate but equal Mass and gravity fields eh? Pfft, next you'll tell them to give up their seat in their collapsed location for white holes and go to the back of the universe.

#16 Edited by Glitch_Spawn (17132 posts) - - Show Bio

@glitch_spawn said:

@the_stegman said:

@glitch_spawn said:

@the_stegman said:

Damn..you ain't gotta call em Obese, black holes having feelings too.

No they don't. Neutron stars have feelings. Supernovas have feelings. Gamma Ray Bursts and Nebulas have feelings but not Black Holes. Especially the fatties!

Okay I'm done. : )

Spacist, I bet you think Black Holes should stay separated from the rest of the galaxies too huh?

Yep. They need to use different cosmic bathrooms and eat in crushing singularity exclusive restaurants.

Away from all the spiral and cluster galaxies. By themselves. Alone.

Separate but equal Mass and gravity fields eh? Pfft, next you'll tell them to give up their seat in their collapsed location for white holes and go to the back of the universe.

Yep. White dwarfs and red giants get the front seats of all the galaxies. Until Martin Hole King Jr. comes along that is.