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or when a neutron star merges with a black hole. Although mergers between neutron stars and black holes would not explain these brighter calcium-rich transients the researchers considered that
if the collision was instead between a white dwarf star and neutron star it would fit their observations because:
One explanation for this is a giant black hole weighing in at some 10 million times the mass of our sun. Astronomers are trying to determine
The possible massive black hole combined with the high galaxy mass and sun-like levels of elements found in the stars favor the latter idea.
A giant black hole at the center of M60-UCD1 helps tip the scales against the scenario where this galaxy was once a star cluster
since such large black holes are not found in these types of objects. The galaxy was discovered using NASA's Hubble space telescope.
and why we cannot detect any curvature in the fabric of space (other than the tiny indentations caused by massive objects such as black holes).
#Desktop sonic black hole emits Hawking radiation A model black hole that traps sound instead of light has been caught emitting quantum particles thought to be the analogue of the theoretical Hawking radiation.
The effect may be the first time that a lab-based black hole has created Hawking particles in the same way expected from real black holes.
Black holes are ultra-dense concentrations of matter left behind when a star or other massive body collapses.
Given that physicists expected that black holes would be well black. But in 1974 Stephen Hawking of the University of Cambridge predicted they should emit a faint glow of particles now known as Hawking radiation.
But if one gets caught inside a black hole's event horizon the other is free to escape
The glow from real-life black holes would be too faint to see so to confirm Hawking's prediction physicists have built artificial black holes that mimic the event horizon.
In 2010 a team led by Francesco Belgiorno at the University of Milan made a model black hole the horizon
whether it used the same physics as a real black hole horizon. A quantum mechanical fluid should be able to mimic the exact physics of a black hole's event horizon albeit at a much smaller scale.
In 2009 Jeff Steinhauer at the Technion-Israel Institute of technology in Haifa and his colleagues made just such a model black hole using Bose-Einstein condensates (BECS) a quantum state of matter where a clump of super
-cold atoms behaves like a single atom. Now the team claims that their black hole has produced just the kind of Hawking radiation expected of a real black hole.
This tells us that the idea of Hawking actually works Steinhauer says. A black hole should really produce Hawking radiation.
The team used one laser to confine the BEC to a narrow tube and another to accelerate some of it faster than the speed of sound.
The Hawking effect comes from quantum noise at the horizon says William Unruh at the University of British columbia in Canada one of the first to propose fluid-based black hole analogues.
but the phonons inside the black hole bounce back and forth between the inner and outer horizons triggering the creation of more Hawking phonons each time much like a laser amplifies light.
Physicists call this effect a black hole laser The Hawking radiation exponentially grows it self-amplifies Steinhauer says.
whether the pairs of phonons are entangled another predicted feature of real black holes that may have fiery consequences.
This work is really impressive says Daniele Faccio at Heriot-Watt University in Edinburgh in the UK who was on the team that made the fibre-optic based black hole.
It is of course clear that black holes differ from flowing BECS and showing that the effect occurs in a BEC does not prove it would occur in black holes.
However it sure increases my confidence that it does. The mathematics and the results are too similar to just be a coincidence.
though it could also be a sign of more prosaic processes such as rapid star formation or an actively feeding black hole at the galaxy's centre.
and supermassive black holes pulling in material that gets too Close to run the simulation the team used several supercomputers in Europe and the US each
and black hole radiation are still not very well understood making it difficult to tell whether the simulation gets them right.
Snowflakes shorelines and most recently black holes (see Turbulent black holes grow fractal skins as they feed) also exhibit such fractal behaviour.
Instead the smaller cheaper machine might help labs around the world study deep-space objects such as powerful radiation jets squirted out by black holes.
This is similar to the powerful streams of matter-antimatter observed outside pulsars and black holes. CERN physicist Niels Madsen notes though that the tabletop device has limitations.
As an alternative says Sarri the beams can be used to mimic the way particle fountains from black holes
and thought to be caused by the collision of two neutron stars black holes or white dwarfs. The pair suggest that the odd isotope levels in the trees
Stephen Westland professor of color science and technology at Leeds University said in The Independent These new materials they are pretty much as black as we can get almost as close to a black hole as we could imagine.
How much of the universe is black holes? More information: www. surreynanosystems. com/news/19 9
#Researchers demonstrate novel tunable nanoantennas A research team from the University of Illinois at Urbana-Champaign has developed a novel,
#Black hole is 30 times bigger than expected This shouldn't be possible. Researchers say they've detected a supermassive black hole at the center of a newly found galaxy that's far bigger than current theories allow.
The research was done by astronomers at Keele University and the University of Central Lancashire and will be published in the Monthly Notices of the Royal Astronomical Society.
The research team says it confirmed a black hole in the galaxy's center by measuring the speed of the gas swirling around it.
they used the Southern African Large telescope to gather data to help determine the size of the black hole.
Black holes heading for'massive collision,'says astronomer What they found blew away their theories about how galaxies evolve.
The data indicated the black hole is 30 times larger than expected for this size of galaxy, according to a press release from the Royal Astronomical Society."
and so do the black holes in their cores. This one though is really too big for its boots--it simply shouldn't be possible for it to be said so large
Researchers say it could be that the black hole just grew much faster than the galaxy surrounding it,
#Hubble Reveals That Markarian 231 Is powered by a Double Black hole Using NASA Hubble space telescope, a team of astronomers discovered that Markarian 231 is powered by two central black holes furiously whirling about each other.
Markarian 231 is the nearest galaxy to Earth that hosts a quasar, located 581 million light-years away.
The finding suggests that quasarshe brilliant cores of active galaxies may commonly host two central supermassive black holes,
If only one black hole were present in the center of the quasar, the whole accretion disk made of surrounding hot gas would glow in ultraviolet rays.
This provides observational evidence that the disk has a big donut hole encircling the central black hole.
based on dynamical models, is that the center of the disk is carved out by the action of two black holes orbiting each other.
The second, smaller black hole orbits in the inner edge of the accretion disk, and has its own mini-disk with an ultraviolet glow. e are excited extremely about this finding
because it not only shows the existence of a close binary black hole in Mrk 231, but also paves a new way to systematically search binary black holes via the nature of their ultraviolet light emission,
said Youjun Lu of the National Astronomical observatories of China, Chinese Academy of Sciences. he structure of our universe,
and binary black holes are natural consequences of these mergers of galaxies, added co-investigator Xinyu Dai of the University of Oklahoma.
The central black hole is estimated to be 150 million times the mass of our sun, and the companion weighs in at 4 million solar masses.
The lower-mass black hole is the remnant of a smaller galaxy that merged with Mrk 231.
The binary black holes are predicted to spiral together and collide within a few hundred thousand years. Mrk 231 is located 600 million light-years away.
A probable Milli-Parsec Supermassive Binary Black hole in the Nearest Quasar Mrk 23 e
#Physicists Observe and Control Quantum Motion For the first time, a team of physicists has discovered a way to observe
They are thought to be the result of massive stars collapsing into black holes. Their huge luminosity helps astronomers to map out the location of distant galaxies, something the team exploited.
what could become an information black hole without realizing it. A team of swiss engineers hope to employ DNA as a method to store more data.
it no longer makes sense to throw our digitized cultural documents into an informational black hole
#Super-Strong Material Inspired By Squid Teeth Is Self-Healing A team of researchers led by engineers from Penn State university has created the first material that heals itself in the presence of water, according to a study published yesterday in Scientific Reports.
ensuring patient privacy. ploaded images often look like a mess of black holes where things have been deleted, but that fine this is not about aesthetics,
#Is matter falling into the massive black hole at the center of the Milky way or being ejected from it?
Is matter falling into the massive black hole at the center of the Milky way or being ejected from it?
What the team found led them to examine additional observations of Sagittarius A-Star (A*)the source that marks the Milky way's central black hole.
This massive black hole--which contains 4 million solar masses--does not emit radiation but is visible from the gas around it.
The gas is being acted upon by the black hole's very strong gravitational field. The wavelengths that make Sagittarius A*visible are scattered by interstellar gas along the line of sight in the same way that light is scattered by fog On earth.
and about the emission region around the black hole Johnson said. It turns out that the size of that emission region is only 20 times the diameter of the event horizon as it would be seen from Earth.
While no scientific team has been able to produce a complete image of the black hole's emission astronomers have drawn inferences about scattering properties from observations at longer wavelengths.
This will be important for future research on the gas near this black hole. This work is a good example of the synergy between different modern research infrastructures technologies and science ideas.
A friendly international race is going on to see who will be the first to image the black hole's emissions
whether gas falls into the black hole or is being ejected in the form of a jet.
and we can get closer to the black hole. We may be able to extract more information than just the size of the emission region.
We might possibly be able to make a simple image of how matter falls into a black hole
No one likes sharing photos into a black hole, so theye at risk of churning out. Twitter is facing this problem already.
This behavior is something astronomers generally see more often in systems containing black holes than in systems like Circinus X-1 that contain a neutron star.
This extreme velocity is associated usually with jets produced by a black hole. ircinus X-1 acts in some ways like a neutron star
and in some like a black hole, said co-author Catherine Braiding, also of the University of New south wales. t extremely unusual to find an object that has such a blend of these properties.
Named Wise J224607. 57-052635.0, scientists believe the galaxy may have a behemoth black hole at its heart
but how this black hole came to be so big remains a mystery.''We are looking at a very intense phase of galaxy evolution,
'This dazzling light may be from the main growth spurt of the galaxy's black hole.''Supermassive black holes draw gas
and matter into a disk around them, heating the disk to roaring temperatures of millions of degrees and blasting out high-energy, visible, ultraviolet,
Immense black holes are common at the cores of galaxies, but finding one this big so'far back'in the cosmos is rare.
Because light from the galaxy hosting the black hole has travelled 12.5 billion years to reach us,
The black hole was already billions of times the mass of our sun when our universe was only a tenth of its present age of 13.8 billion years.
The new study suggests black holes in the Elrigs could have grown so massive because embryonic black holes, might be thought bigger than possible.
The other two explanations involve either breaking or bending the theoretical limit of black hole feeding,
called the Eddington limit. When a black hole feeds, gas falls in and heats up, blasting out light.
The pressure of the light actually pushes the gas away creating a limit to how fast the black hole can continuously scarf down matter.
If a black hole broke this limit, it could theoretically balloon in size at a breakneck pace.
Black holes have previously been observed breaking this limit; however, the black hole in the study would have had to repeatedly break the limit to grow this large.
Alternatively, the black holes might just be bending this limit. If a black hole spins slowly enough, it won't repel its meal as much.
In the end, a slow-spinning black hole can eat up more matter than a fast spinner.''The massive black holes in Elrigs could be gorging themselves on more matter for a longer period of time,
'said Andrew Blain of University of Leicester.''It's like winning a hot-dog-eating contest lasting hundreds of millions of years.'
'More research is needed to solve this puzzle of these dazzlingly luminous galaxies. The team has plans to better determine the masses of the central black holes.
Knowing these objects'true hefts will help reveal their history, as well as that of other galaxies, in this very crucial and frenzied chapter of our cosmos m
#The gadgets that give you SUPERPOWERS: Spiderman-style gloves, lenses with super sight and Iron man suits become a reality By Sarah Griffiths and Victoria Woollaston for Mailonline Published:
08:14 GMT, 22 may 2015 Updated: 08:14 GMT, 22 may 2015 The technology to transform yourself into your favourite superhero is quickly becoming a reality-thankfully without the outlandish Lycra wardrobe.
the final stage of collapse before some go on to make black holes.''In that environment, it quite possible that pentaquarks are formed,
what's referred to as the"black hole"of the genome regions full of duplicate information that are extremely hard to sequence.
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