Thursday, November 14, 2019

Black hole mergers: Cooking with gas: New study proposes light signature for detecting black hole

Gravitational wave detectors are finding black hole mergers in the universe at the rate of one per week. If these mergers occur in empty space, researchers cannot see associated light that is needed to determine where they happened.

"With a light signature, astronomers could easily pinpoint the cosmic location of these mergers and study them in much more detail than is presently possible," said paper author Barry McKernan, a research associate in the Museum's Department of Astrophysics as well as a professor at the Borough of Manhattan Community College, CUNY, and a faculty member at CUNY's Graduate Center.

Publisher: ScienceDaily
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Other things to check out:

A Supermassive Black Hole Yeeted This Star at 3.7 Million MPH

Five million years ago, the supermassive black hole at the center of the Milky Way sent an unfortunate star rocketing away at millions of miles per hour.

The star, recently spotted by Carnegie Mellon University astronomers, is on its way out of the galaxy at 3.7 million miles per hour — a speed so high that it will never return, according to Space.com . Putting aside how metal it is that a black hole ejected a star from the galaxy, the discovery also helped astronomers confirm a whole slew of hypotheses about how stars and giant black holes can interact.

Publisher: Futurism
Twitter: @futurism
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A black hole slashed a star apart — and was caught in the act | Science News for Students

A star that wanders too close to a black hole (top left) is stretched into a thin strand. Some of the star material is thrown back into space, as this illustration shows. The rest swirls around the black hole, crashing into itself and forming a disk of superheated gas.

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The episode was described September 26 in Astrophysical Journal . It was first detected by telescopes in January. Scientists named the event ASASSN-19bt . It's one of only dozens of these phenomena ever observed. Such events are known as tidal disruption events.

Publisher: Science News for Students
Date: 2019-11-14T06:45:35-05:00
Author: Carolyn Wilke
Twitter: @SNStudents
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Watch Earth get destroyed with black hole calculator | Newshub

Watch: The first-ever photo of a black hole was revealed earlier this year. Credits: Image - Getty, Video - Newshub

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A black hole calculator allows you to do just that - learn what would happen if the planet was sucked into its mass, destroying the world and snuffing out billions of people.

"[I] decided to be part of this 'Year of the Black Hole' of sorts by creating a calculator that would help people understand better these mysterious objects."

Publisher: Newshub
Date: 2019-11-02T15:30:17+13:00
Twitter: @NewshubNZ
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Not to change the topic here:

Fortnite's black hole event broke Twitch and Twitter viewing records - The Verge

It's been just over a week since Fortnite came back online following a two-day, black hole-induced hiatus . But the event, which ushered in the game's eleventh season and its all-new redesigned map, was one of the biggest singular online gaming events to date — with more than 7 million concurrent viewers across Twitch, Twitter, and YouTube.

On Twitch, more than 1.7 million people were viewing either the official Fortnite stream or streams from popular creators. That's "the platform's peak concurrent record on a single game category," Epic says.

Publisher: The Verge
Date: 2019-10-23T19:37:51-04:00
Author: Nick Statt
Twitter: @verge
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Breaking Open A Black Hole: The World's Most Dangerous Experiment | OilPrice.com

Haley Zaremba is a writer and journalist based in Mexico City. She has extensive experience writing and editing environmental features, travel pieces, local news in the…

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2012 was a big year for black holes. Or, rather, for our understanding of them. First, Scientific American published a moderately terrifying paper titled “Black Holes are Everywhere” and then a team of researchers at Princeton University numerically solved the Einstein-hydrodynamic equations in order to determine that black holes are, in fact, way easier to create than previously thought.

Publisher: OilPrice.com
Date: D14A5D573CE72469797ECB50683F1795
Author: Energy News
Twitter: @oilandenergy
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Black hole fears: Why Earth 'could be wiped out by Milky Way monster' | Science | News

Science channel “What If” produced a mini-documentary on YouTube theorising what would happen if this black hole ever entered the Solar System.

The narrator explained in April: “Black holes aren’t exactly holes, they’re a large amount of matter crammed into a very small space.

“Being so compressed gives them an incredibly strong gravitational pull, not even light can escape and if you get too close you would be compressed to a small dot.

Publisher: Express.co.uk
Date: 2019-10-29T11:42:00+00:00
Author: Callum Hoare
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Black hole breakthrough: How Einstein's 'unsolvable' theory was 'simply' cracked  | Science |

Albert Einstein’s general theory of relativity is the genius equation that helped explain how gravity is a universal product of space and time or spacetime. Tabled in 1915, the German scientists detailed that the curvature of space is directly related to the energy and momentum of whatever matter and radiation are present within. However, there was a problem.

Einstein could not explain exactly how to prove his theory as he  could not  produce the correct calculations and so used approximation instead when presenting his paper.

Publisher: Express.co.uk
Date: 2019-10-24T15:54:00+01:00
Author: Callum Hoare
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