12 May 10
http://www.physorg.com/news192811164.html
An ungrad student was making a study that would compare sources of x-rays with the positions of galaxies when she discovered something that made the community of astronomers to raise their collective eyebrows: Supermassive black holes were, apparently, expelled by the center of a galaxy!
The initial suspicion is that this event was cause by the collision of two smaller black holes.
For a previous discussion on the nature of black hole collision (and some more links about the difficulties in computing this) just visit this heated thread: Thread 117923
For the prepint of the article: http://arxiv.org/abs/1004.5379
12 May 10
Originally posted by adam warlockCan't even imagine the force needed to do that, considering the mass would be millions of suns, you would think the black hole would stay put and whatever pushed against it would bounce.
http://www.physorg.com/news192811164.html
An ungrad student was making a study that would compare sources of x-rays with the positions of galaxies when she discovered something that made the community of astronomers to raise their collective eyebrows: Supermassive black holes were, apparently, expelled by the center of a galaxy!
The initial suspicio ...[text shortened]... d: Thread 117923
For the prepint of the article: http://arxiv.org/abs/1004.5379
12 May 10
Originally posted by sonhousehttp://en.wikipedia.org/wiki/Gravity_assist
Can't even imagine the force needed to do that, considering the mass would be millions of suns, you would think the black hole would stay put and whatever pushed against it would bounce.
In orbital mechanics and aerospace engineering, a gravitational slingshot, gravity assist maneuver or swing-by is the use of the relative movement and gravity of a planet or other celestial body to alter the path and speed of a spacecraft, typically in order to save propellant, time, and expense. Gravity assistance can be used to accelerate, decelerate and/or re-direct the path of a spacecraft.
The "assist" is provided by the motion (orbital angular momentum) of the gravitating body as it pulls on the spacecraft.[1]
14 May 10
Originally posted by zeeblebotSure but I was thinking of the massive amount of energy required to sling a what, billion sun mass, to 400,000 m/second I think was mentioned. Moggles the bind.
http://en.wikipedia.org/wiki/Gravity_assist
In orbital mechanics and aerospace engineering, a gravitational slingshot, gravity assist maneuver or swing-by is the use of the relative movement and gravity of a planet or other celestial body to alter the path and speed of a spacecraft, typically in order to save propellant, time, and expense. Gravity assis ...[text shortened]... he motion (orbital angular momentum) of the gravitating body as it pulls on the spacecraft.[1]
I guess it is a strict exchange of kinetic energy, so there must be something even more massive it is slinging against.
14 May 10
Originally posted by sonhouseBlack holes collisions are a very messy game! I think I can safely say no one understands how this came to be.
Can't even imagine the force needed to do that, considering the mass would be millions of suns, you would think the black hole would stay put and whatever pushed against it would bounce.
14 May 10
Originally posted by sonhouseyeah, even with man-made vehicles vs. planets there is an exchange, it's just that the planet is so large the amount of energy it loses is relatively tiny. with black holes, what else are they going to do if they don't collide?
Sure but I was thinking of the massive amount of energy required to sling a what, billion sun mass, to 400,000 m/second I think was mentioned. Moggles the bind.
I guess it is a strict exchange of kinetic energy, so there must be something even more massive it is slinging against.
15 May 10
Originally posted by adam warlockhttp://news.nationalgeographic.com/news/2010/05/100507-science-space-black-holes-supernova-mystery/
http://www.physorg.com/news192811164.html
An ungrad student was making a study that would compare sources of x-rays with the positions of galaxies when she discovered something that made the community of astronomers to raise their collective eyebrows: Supermassive black holes were, apparently, expelled by the center of a galaxy!
The initial suspicio ...[text shortened]... d: Thread 117923
For the prepint of the article: http://arxiv.org/abs/1004.5379
Mystery Space Object May Be Ejected Black Hole
John Roach
for National Geographic News
Published May 7, 2010
A mystery object in a galaxy far, far away could be a supermassive black hole that got booted from its home galaxy's center, according to a new study.
Then again, the strange body could be a rare type of supernova or an oddball "midsize" black hole—more massive than black holes born when single stars explode but "lighter" than the supermassive ones at the centers of galaxies.
"All three of those [options] are exotic and have something peculiar to them," said study co-author Peter Jonker, an astronomer with the Netherlands Institute for Space Research in Utrecht.
Off-center Black Holes Wanted
Jonker and his colleagues found the mystery object while on the hunt for off-center supermassive black holes that are thought to form when two galaxies merge. (Related: "Colossal Four-Galaxy Collision Discovered."😉
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