Tag Archives | Black Holes

Black Holes Are Not Ruthless Killers, but Instead Benign Hologram Generators

This artist's concept illustrates a supermassive black hole with millions to billions times the mass of our sun. Supermassive black holes are enormously dense objects buried at the hearts of galaxies. Smaller black holes also exist throughout galaxies. Credit: NASA/JPL-Caltech

This artist’s concept illustrates a supermassive black hole with millions to billions times the mass of our sun. Supermassive black holes are enormously dense objects buried at the hearts of galaxies. Smaller black holes also exist throughout galaxies.
Credit: NASA/JPL-Caltech

Ohio State University Via ScienceDaily:

Are black holes the ruthless killers we’ve made them out to be? Samir Mathur says no. According to the professor of physics at The Ohio State University, the recently proposed idea that black holes have “firewalls” that destroy all they touch has a loophole.

In a paper posted online to the arXiv preprint server, Mathur takes issue with the firewall theory, and proves mathematically that black holes are not necessarily arbiters of doom.

In fact, he says the world could be captured by a black hole, and we wouldn’t even notice.

More than a decade ago, Mathur used the principles of string theory to show that black holes are actually tangled-up balls of cosmic strings.

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Monster black hole discovered at cosmic dawn

This is an artist's impression of a quasar with a supermassive black hole in the distant universe. Credit: Zhaoyu Li/NASA/JPL-Caltech/Misti Mountain Observatory

This is an artist’s impression of a quasar with a supermassive black hole in the distant universe.
Credit: Zhaoyu Li/NASA/JPL-Caltech/Misti Mountain Observatory

via ScienceDaily:

Scientists have discovered the brightest quasar in the early universe, powered by the most massive black hole yet known at that time. The international team led by astronomers from Peking University in China and from the University of Arizona announce their findings in the scientific journal Nature on Feb. 26.

The discovery of this quasar, named SDSS J0100+2802, marks an important step in understanding how quasars, the most powerful objects in the universe, have evolved from the earliest epoch, only 900 million years after the Big Bang, which is thought to have happened 13.7 billion years ago. The quasar, with its central black hole mass of 12 billion solar masses and the luminosity of 420 trillion suns, is at a distance of 12.8 billion light-years from Earth.

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Hubble Helps Find Smallest Known Galaxy Containing a Supermassive Black Hole

 

Artist's View of M60-UCD1 Black Hole Image Credit: NASA, ESA, STScI-PRC14-41a

Artist’s View of M60-UCD1 Black Hole
Image Credit: NASA, ESA, STScI-PRC14-41a

How awesome is this?!

via Nasa.gov:

Astronomers using data from NASA’s Hubble Space Telescope and ground observation have found an unlikely object in an improbable place — a monster black hole lurking inside one of the tiniest galaxies ever known.

The black hole is five times the mass of the one at the center of our Milky Way galaxy. It is inside one of the densest galaxies known to date — the M60-UCD1 dwarf galaxy that crams 140 million stars within a diameter of about 300 light-years, which is only 1/500th of our galaxy’s diameter.

If you lived inside this dwarf galaxy, the night sky would dazzle with at least 1 million stars visible to the naked eye. Our nighttime sky as seen from Earth’s surface shows 4,000 stars.

The finding implies there are many other compact galaxies in the universe that contain supermassive black holes.

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Coincidence Control Network: Ep. 52 – Groovin’ with L. Ron

Coincidence Control Network: File #052 – Grooving with L Ron

ccnimage

This week: Area 51 ain’t no thang, bring on Area 52!, Diana conspiracy: The people say ‘meh’, L Ron Hubbard: Jazz Legend, Some Space News from the mouth of Kim Monaghan, and Film Taaaalk.

PersonnelJoe Nolan, Kim Monaghan, Joseph Matheny, and Ken Eakins

Linkywotsitnows:

Area 51 declassified Link

Too old. Don’t care – Link

L. Ron Hubbard’s musical hubbub -Link

Black hole action – Link

Interludes

April March, BS 2000, The Apollo Stars, and Cloroform

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Court Rejects Woman’s Lawsuit Claiming Hadron Collider Could End The World

Doomsayers, including a few physicists, worry that experiments at CERN could unravel the fabric of our existence. But a German court says no, reports Phys.org:

A German woman who feared the Earth would be sucked into oblivion in a black hole failed Tuesday in her court bid to stop the work of the world’s most powerful atom smasher.

The higher administrative court in Muenster, Germany, rejected her claims, ruling there was no evidence the work of the European Organisation for Nuclear Research (CERN) posed a danger to public safety. The court noted that the CERN’s own safety reports ruled out any danger to life. “Objectively, there is no evidence to doubt the correctness of these safety reports nor was any conclusive evidence presented,” it ruled.

The woman had failed in a previous attempt to stop the work of CERN in Switzerland at the Federal Constitutional Court in Karlsruhe. Other opponents have also sought to stop the experiments, fearing either a black hole whose super gravity would swallow the Earth or a theoretical particle called a strangelet that would in turn liquidise the planet.

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NASA Reveals Youngest Black Hole

NASA made a major announcement today, revealing what it terms “the youngest known black hole in our cosmic neighborhood.” Photo and official text of the announcement below:

sn1979C

This composite image shows a supernova within the galaxy M100 that may contain the youngest known black hole in our cosmic neighborhood. In this image, Chandra’s X-rays are colored gold, while optical data from ESO’s Very Large Telescope are shown in red, green, and blue, and infrared data from Spitzer are red. The location of the supernova, known as SN 1979C, is labeled. Source: NASA

Astronomers using NASA’s Chandra X-ray Observatory have found evidence of the youngest black hole known to exist in our cosmic neighborhood. The 30-year-old black hole provides a unique opportunity to watch this type of object develop from infancy.

The black hole could help scientists better understand how massive stars explode, which ones leave behind black holes or neutron stars, and the number of black holes in our galaxy and others.

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String Theory and Black Holes Show Possible Path to Practical Superconductors

The unit cell of high-temperature cuprate superconductor BSCCO-2212

The unit cell of high-temperature cuprate superconductor BSCCO-2212

Alasdair Wilkins writes on io9.com:

A leading candidate for room temperature superconductors is the copper compound cuprate, but no one knew how cuprates facilitated superconductivity … until some brave souls looked inside a black hole and broke out the string theory to explain how they work.

Superconductors that can transmit massive amounts of electricity with zero resistance at room temperature are pretty much the holy grail of applied physics (with good reason), but we’re still a long way away from actually building one.

Indeed, even figuring out the theoretical underpinnings of a room temperature superconductor has proven tremendously difficult, although a team of MIT physicists may have found an unlikely — and brilliant — way to learn more about how they would work. But first, a little backstory.

Currently, there are two types of superconductors. One group is the low temperature superconductors, which can only work at temperatures near absolute zero and thus require gigantically impractical amounts of coolants.

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Supermassive Black Hole Is Hurled Out Of Galaxy

A Hubble Space Telescope image of the galaxy studied by Marianne Heida. The white circle marks the centre of the galaxy and the red circle marks the position of the suspected offset black hole. Image: STScI / NASA

A Hubble Space Telescope image of the galaxy studied by Marianne Heida. The white circle marks the centre of the galaxy and the red circle marks the position of the suspected offset black hole. Image: STScI / NASA

This is shock and awe. Report from BBC News:

A supermassive black hole may have been observed in the process of being hurled from its parent galaxy at high speed.

The finding comes from analysis of data collected by the US Chandra space X-ray observatory. However, there are alternative explanations for the observation.

The work, by an international team of astronomers, has been published in the journal Monthly Notices of the Royal Astronomical Society.

Normally, each galaxy contains a supermassive black hole at its centre. Given that these objects can have masses equivalent to one billion Suns, it takes a special set of conditions to cause this to happen.

High-speed exit

The authors believe this could be the result of the merger of two smaller black holes.

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