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#1
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12's clock.
Rock. Lock. _______ Blog, or dog? Who knows. But if you see my lost pup, please ping me! A HREF="http://journals.aol.com/virginiaz/DreamingofLeonardo"http://journal s.aol.com/virginiaz/DreamingofLeonardo/A |
#2
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a thing of quasars?
Luigi Caselli Silly! Gone berserk? Brick by brick, You say ~ Point x point, Coordinate Ordinary day. Order say, Her\y! Earnest One. N _+ \8 |.....*..........*..............~(@: _______ Blog, or dog? Who knows. But if you see my lost pup, please ping me! A HREF="http://journals.aol.com/virginiaz/DreamingofLeonardo"http://journal s.aol.com/virginiaz/DreamingofLeonardo/A |
#3
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Luigi Caselli wrote:
Since quasars are very old (high z = high distance) how so many ultrapowerful black holes could be formed in the early ages of universe? And why we don't have quasars with low z? Now we have a lot of black holes formed in the last 13,7 billion years and some of these black holes could be the power source of new quasars. Or maybe I don't understand a thing of quasars? Luigi Caselli The current model for a quasar is a supermassive black hole at the center of a galaxy (possibly driven to the levels of energy generation we calculate for it for the distance they are determined to be by a collision with another galaxy - based on HST images of distant quasars that show they are at the center of such galaxy collisions). This black hole is being fed by an accretion disk surrounding the black hole, possibly formed from gases and disrupted stars in that region. Quasars are believed to be more common in the early universe simply because galaxies were being constructed at that time through the merger of clouds of newly forming stars and gas (based again on some of the recent images from the HST ultradeep field), so there would be more raw material to feed them. Given time, they would sweep up the material near them and have reduced input from greater distances, reducing the energy output. This takes time, say nearly the current age of the universe, such that the black holes still reside at the center of galaxies, but their feeding frenzy has been greatly reduced. But it also implies the the collision of galaxies which result in material being brought in close proximity to these black holes might fire them up again as additional fuel is made available for a renewed feeding frenzy. As to their existence at this early epoch - likely formed from the merger of star-produced black holes in the crowded environments of the core of galaxies. Massive stars, made mostly of hydrogen, could become more massive than those today polluted with such heavy elements as carbon, iron, silicon, nitrogen (the stuff we are made of). These higher mass stars would evolve even faster than the massive stars formed today (as they are more massive than the current round of stars), allowing them to reach the stage of forming black holes faster and populating the cores of galaxies at the time those galaxies were forming. Hope that helps (though it is not a complete scenario by any stretch). |
#4
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Once a great dreamer I was of the Cosmos but over time I have found less
dream and more reality binding my thoughts. If I understand correctly, one of the big prize questions in physics, both quantum and astro, is the relationship between atoms (and other subatomic particles) and gravity. I understand the conversation in this thread about how when a black hole forms it doesn't suddenly take on a new and increased amount of gravitational pull on it's surrounding. I also understand the BB analogy in that if you take 100 BB's and it's melted equivalent there is no change in it's mass yet if you take that mass of 100 BB's and crush it into the size of 1 BB it's gravitational effect at the surface of the BB will indeed be much stronger than if it were just 100 BB's in a jar. Radius, mass, and gravity work together but it's important to visualize the relationship as dependent upon where your measurements are being taken. Something I've pondered about concerning black holes in particular, is the organization of the atoms inside. I flounder to produce the name of the researcher who studied the shapes of solids 100's of years ago; the one that concluded that some shapes are inherently natural. I visualize atoms as BB's that are squashable. If you put BB's in a jar you can see that they rest in a certain way naturally. In a black hole, or even all black holes, are the atoms that exist inside organized in such a way? Do atoms even exist inside as we know them or are they completely unbound and crushed further into the various quarks that make up protons and neutrons? Do electrons survive the transformation or are they completely removed from the mass? Is a black hole susceptable to ground -state fluctuations? I ask the questions but expect no answer as they very well might not be valid questions at all and just the musings of an idiot or just more dreams. |
#5
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Once a great dreamer I was
Dear Ms. Shirley, I'll get back to you. I knew you'd write, An abbot's cabinent. Gotta go Shower my soul, Stand under the rain. Back in half, Before you No. I understand the conversation in this thread Yes, but do you know Ms. B? Fancy dancer Without her habit's Madder? Goose down Pillow, she's made For me. Quack, Quack! important to visualize the relationship as dependent upon where your measurements are being taken. O, yes, I do know. Matter's value For me. Long-delayed date, Our destiny of choice Voice. just the musings of an idiot or just more dreams. [Just]in! True, Wizzard blew In. Answer, who? _______ Blog, or dog? Who knows. But if you see my lost pup, please ping me! A HREF="http://journals.aol.com/virginiaz/DreamingofLeonardo"http://journal s.aol.com/virginiaz/DreamingofLeonardo/A |
#6
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Southern Hospitality wrote:
[snip] Something I've pondered about concerning black holes in particular, is the organization of the atoms inside. I flounder to produce the name of the researcher who studied the shapes of solids 100's of years ago; the one that concluded that some shapes are inherently natural. I visualize atoms as BB's that are squashable. If you put BB's in a jar you can see that they rest in a certain way naturally. In a black hole, or even all black holes, are the atoms that exist inside organized in such a way? Do atoms even exist inside as we know them or are they completely unbound and crushed further into the various quarks that make up protons and neutrons? Do electrons survive the transformation or are they completely removed from the mass? Is a black hole susceptable to ground -state fluctuations? Consider neutron stars, which are much less dense than black holes, but even they no longer have any atomic structure. They're thought to be made of 'degenerate' matter, sometimes called "neutronium", in which all the empty space has been squeezed out of the atoms, fusing the protons and electrons into what's in effect a gigantic nucleus. I don't know much about what the substance of a black hole is supposed to be like on a microscopic scale, but whatever it is I'm pretty sure it's nothing at all like 'ordinary' atomic matter. Were you perhaps thinking of Kepler, who (beside his more famous astronomical work) did some research into polyhedra, IIANM discovering a number of stellated forms? -- Odysseus |
#7
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S.H. There can be no atoms inside a BH. Bert
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#8
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S.H.
There can be no atoms inside a BH. Got milk? _______ Blog, or dog? Who knows. But if you see my lost pup, please ping me! A HREF="http://journals.aol.com/virginiaz/DreamingofLeonardo"http://journal s.aol.com/virginiaz/DreamingofLeonardo/A |
#9
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G=EMC^2 Glazier wrote:
S.H. There can be no atoms inside a BH. Bert No argument there. Is there any possibility that the particles that make up a black hole are the same ones that made up the universe before the big-bang? |
#10
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![]() "G=EMC^2 Glazier" wrote in message ... S.H. There can be no atoms inside a BH. Bert There has to be atoms inside a BH. How else do they evaporate over time? Where do the atoms go? Or are you suggesting everything that enters a BH is converted to energy? If so, doesn't that break law of conservation of information. BV. P.S. I am not argueing, I am actually curious about those answers. |
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