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Black Holes part 2
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anniet Send message Joined: 2 Feb 14 Posts: 7105 Credit: 1,577,368 RAC: 75 |
Ooh now those were a very interesting read! Thanks Lynn :) thanks Wiggo :) Hi all :) |
Darth Beaver Send message Joined: 20 Aug 99 Posts: 6728 Credit: 21,443,075 RAC: 3 |
Thanks Wiggo i read yours too .. |
PJ Send message Joined: 30 Jun 14 Posts: 127 Credit: 774,387 RAC: 0 |
Just been watching Stephen Hawkins 'docudrama' and the 2010 documentary. I remember reading a few years ago about Black Holes just fading away? (given enough time) I'm not a complete idiot, but, I'm working on it. I have an opinion and I'm not afraid to use it |
Lynn Send message Joined: 20 Nov 00 Posts: 14162 Credit: 79,603,650 RAC: 123 |
Happy New Year, Everyone :) Mystery cloud near the Milky Way's black hole: Unidentified gas may have drifted from a nearby massive star In 2011 astronomers announced they had discovered a gas cloud known as G2 drifting around the supermassive black hole at the Milky Way's core. While the cloud had been observed orbiting the black hole its origins, however, were unknown. But now astronomers have found that the cloud is in an orbit matching another gas cloud - suggesting both may have been ejected by a star as it orbits the black hole. http://www.dailymail.co.uk/sciencetech/article-2892301/Mystery-cloud-near-Milky-Way-s-black-hole-Unidentified-gas-drifted-nearby-massive-star.html |
Lynn Send message Joined: 20 Nov 00 Posts: 14162 Credit: 79,603,650 RAC: 123 |
NASA just emailed me. NASA’s Chandra Detects Record-Breaking Outburst from Milky Way’s Black Hole Astronomers have observed the largest X-ray flare ever detected from the supermassive black hole at the center of the Milky Way galaxy. This event, detected by NASA’s Chandra X-ray Observatory, raises questions about the behavior of this giant black hole and its surrounding environment. http://www.nasa.gov/press/2015/january/nasa-s-chandra-detects-record-breaking-outburst-from-milky-way-s-black-hole/index.html |
betreger Send message Joined: 29 Jun 99 Posts: 11361 Credit: 29,581,041 RAC: 66 |
NASA just emailed me. Mucho interesante |
Lynn Send message Joined: 20 Nov 00 Posts: 14162 Credit: 79,603,650 RAC: 123 |
Missed this yesterday. Colliding black holes could warp space-time itself A team of prominent researchers has discovered what appears to be the start of two massive black holes at the centers of their own galaxies beginning to collide. http://www.cnet.com/uk/news/colliding-black-holes-could-warp-space-time-itself/ |
Lynn Send message Joined: 20 Nov 00 Posts: 14162 Credit: 79,603,650 RAC: 123 |
NASA, ESA Telescopes Give Shape to Furious Black Hole Winds NASA's Nuclear Spectroscopic Telescope Array (NuSTAR) and ESA’s (European Space Agency) XMM-Newton telescope are showing that fierce winds from a supermassive black hole blow outward in all directions -- a phenomenon that had been suspected, but difficult to prove until now. This discovery has given astronomers their first opportunity to measure the strength of these ultra-fast winds and prove they are powerful enough to inhibit the host galaxy’s ability to make new stars. http://www.nasa.gov/press/2015/february/nasa-esa-telescopes-give-shape-to-furious-black-hole-winds/index.html Shouldn't have eaten that entire galaxy? |
Julie Send message Joined: 28 Oct 09 Posts: 34053 Credit: 18,883,157 RAC: 18 |
I read about that. Seems a bit of a mystery to the scientists. +1 :) rOZZ Music Pictures |
Lynn Send message Joined: 20 Nov 00 Posts: 14162 Credit: 79,603,650 RAC: 123 |
2018 James Webb Telescope, will get a better look. Gigantic Black Hole Discovered From the Dawn of Time Astronomers find a cosmic monster that pushes theories of the early universe to the limit. Astronomers have identified a mammoth black hole weighing as much as 12 billion suns. It's not the biggest black hole ever found, but it's astonishingly young. The giant appears to have swelled to its enormous size only 875 million years after the big bang, when the universe was just 6 percent of its current age. That's a surprise, astronomers report Wednesday in the journal Nature, because giant black holes are thought to grow relatively slowly by vacuuming up gas and even stars that venture too close. http://news.nationalgeographic.com/news/2015/02/140225-black-hole-big-science-space/ |
Lynn Send message Joined: 20 Nov 00 Posts: 14162 Credit: 79,603,650 RAC: 123 |
Not the dead zone TV series. Rare 'Medium-Sized' Black Hole Creates Galactic Dead Zone Astronomers have detected a black hole embedded in the spiral arm of a galaxy 100 million light-years from Earth — but this isn’t any old black hole, it belongs to an extremely elusive class that may be the ‘missing link’ in black hole evolution. http://news.discovery.com/space/astronomy/rare-medium-sized-black-hole-creates-galactic-dead-zone-150226.htm |
Dr Who Fan Send message Joined: 8 Jan 01 Posts: 3225 Credit: 715,342 RAC: 4 |
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Lynn Send message Joined: 20 Nov 00 Posts: 14162 Credit: 79,603,650 RAC: 123 |
Never going to understand how black holes work, and why? Black Hole Winds Quench Star Formation in Entire Galaxies Giant winds from black holes can blast gas through galaxies at extraordinary speeds, pulling the plug on star formation, researchers say. This finding reveals how black holes can direct the fates of entire galaxies, scientists added. http://www.space.com/28927-black-hole-winds-star-formation.html |
Bob DeWoody Send message Joined: 9 May 10 Posts: 3387 Credit: 4,182,900 RAC: 10 |
There are a lot of things that most of us will never completely comprehend about the universe. Even though I believe they exist I too fail to understand much about them. Bob DeWoody My motto: Never do today what you can put off until tomorrow as it may not be required. This no longer applies in light of current events. |
tullio Send message Joined: 9 Apr 04 Posts: 8797 Credit: 2,930,782 RAC: 1 |
They are a kind of "write only" memory, which was advertised by mistake on a technical magazine, which received a number of requests for more details on it and the editor had to explain how this mistake had happened. Tullio |
KLiK Send message Joined: 31 Mar 14 Posts: 1304 Credit: 22,994,597 RAC: 60 |
I doubt we'll ever know what black holes really are, we can only observe from afar and speculate. The only way would be to go and have a look, but then you'd never get back to tell anyone! A bit like Clarke's Odyssey "Oh my god, it's full of stars! ............" Well, that's cause we know the threashold for the creation of (atomic) stars... We also know the threashold for stars to compress in neutron stars... & so far we know the threashold for the star to become a Black hole... But we don't know EXACTLY how much compressed is matter inside Black hole...and no, it's not infinity! ;) non-profit org. Play4Life in Zagreb, Croatia, EU |
Lynn Send message Joined: 20 Nov 00 Posts: 14162 Credit: 79,603,650 RAC: 123 |
Very interesting if true. Black holes don't erase information, scientists say The "information loss paradox" in black holes—a problem that has plagued physics for nearly 40 years—may not exist. Shred a document, and you can piece it back together. Burn a book, and you could theoretically do the same. But send information into a black hole, and it's lost forever. That's what some physicists have argued for years: That black holes are the ultimate vaults, entities that suck in information and then evaporate without leaving behind any clues as to what they once contained. http://phys.org/news/2015-04-black-holes-dont-erase-scientists.html |
ML1 Send message Joined: 25 Nov 01 Posts: 20323 Credit: 7,508,002 RAC: 20 |
Thanks for that. This connected article leads on to some very interesting ideas that I've suspected for some time: Black holes do not exist where space and time do not exist, says new theory ... "What many of these models have in common is that it can be inferred from them that the energy of a particle cannot get as large as possible, but that there is a maximum energy that any particle can reach. This restriction can be easily combined with Einstein's special theory of relativity, and the resultant theory is called the doubly special theory of relativity, or DSR." As the physicists explain, it is possible to generalize DSR to include gravity, and this theory is called gravity's rainbow. "General relativity predicts that the geometry of space and time curves in the presence of matter, and this causes gravity to exist," Ali said. "Gravity's rainbow predicts that this curvature also depends on the energy of the observer measuring it. So, in gravity's rainbow, gravity acts differently on particles with different energies. This difference is very small for objects like the Earth. However, it becomes significant for objects like black holes." ... ... Which also follows the pattern of how our physics has developed to greater world detail as we've moved our ideas from continuous quantities to instead deal with discrete (non-continuous) quanta. So why not might our very space and time and our own existence exist in discrete quantum steps that resolve through ephemeral "moments" that are our space and time? Doubly Special indeed! All with fundamental implications but at least far better than suffering fundamental paradox. Keep searchin', Martin See new freedom: Mageia Linux Take a look for yourself: Linux Format The Future is what We all make IT (GPLv3) |
Lynn Send message Joined: 20 Nov 00 Posts: 14162 Credit: 79,603,650 RAC: 123 |
More mysteries of Black holes. Pulsing light may indicate supermassive black hole merger As two galaxies enter the final stages of merging, scientists have theorized that the galaxies' supermassive black holes will form a "binary," or two black holes in such close orbit they are gravitationally bound to one another. In a new study, astronomers at the University of Maryland present direct evidence of a pulsing quasar, which may substantiate the existence of black hole binaries. http://phys.org/news/2015-04-pulsing-supermassive-black-hole-merger.html |
betreger Send message Joined: 29 Jun 99 Posts: 11361 Credit: 29,581,041 RAC: 66 |
Lynn nice find I'm sure the LIGO people are excited. |
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