Saturday, February 8, 2020

We May Finally Have a Way to Detect Hawking Radiation Leaking From Black Holes

The epic collision between two neutron stars in 2017 really is the science gift that keeps on giving. As they merged, gravitational waves rippled out across the Universe; now reverberations from that event could confirm a decades-old hypothesis about black holes .

Astronomers poring over the gravitational wave data believe they have found evidence of echoes - something that would only occur in the presence of the 'quantum fuzz' produced by Hawking radiation.

Publisher: ScienceAlert
Author: Michelle Starr
Twitter: @ScienceAlert
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Bizarre objects near Milky Way black hole - Frontline

Orbits of G objects at the centre of our galaxy, with the supermassive black hole marked with a white cross. Photo: Anna Ciurlo, Tuan Do/UCLA-gcg

ASTRONOMERS from the University of California at Los Angeles (UCLA) and W.M. Keck Observatory have discovered a new class of bizarre objects at the centre of our galaxy, not far from the supermassive black hole called Sagittarius A*. The study, which is part of UCLA's Galactic Centre Orbits Initiative, consists of 13 years of data taken from Keck Observatory on Mauna Kea in Hawaii. The results have been published in a recent issue of Nature.

Publisher: Frontline
Date: 2020-02-08T07:00:00 05:30
Author: R Ramachandran
Twitter: @frontline_india
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Black hole breakthrough: Why space discovery could 'rewrite physics books' | Science | News |

These space phenomenons appear to reject the basic laws of quantum mechanics and Albert Einstein's general relativity theory by swallowing physical information and making it permanently disappear.

Italian astrophysicist Fabio Pacucci explained during his TedTalk in November 2019: “Scientists work on the boundaries of the unknown, where every new piece of knowledge forms a path into a void of uncertainty and nothing is more uncertain than a paradox.

Publisher: Express.co.uk
Date: 2020-02-06T21:24:00 00:00
Author: Callum Hoare
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A stripped helium star solves the massive black hole mystery -- ScienceDaily

The putative black hole was detected indirectly from the motion of a bright companion star, orbiting an invisible compact object over a period of about 80 days. From new observations, a Belgian team showed that the original measurements were misinterpreted and that the mass of the black hole is, in fact, very uncertain. The most important question, namely how the observed binary system was created, remains unanswered.

A team of astronomers from Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) and the University of Potsdam had a closer look at the archival spectrum of LS V+22 25, taken by the Keck telescope at Mauna Kea, Hawaii. In particular, they were interested in studying the abundances of the chemical elements on the stellar surface.

Publisher: ScienceDaily
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Subscribe to read | Financial Times
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Twitter: @FinancialTimes
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The Flash: What Is Black Hole? | CBR

SPOILER WARNING: This article contains major spoilers for "Marathon," The Flash 's midseason premiere.

There's a conspiracy afoot in Central City. In "Marathon," the midseason premiere of The Flash , Iris and her Central City Citizen team discovered a nefarious operation called Black Hole. As she soon learned, this shadow group has ties to McCullouch Tech and will employ deadly means to protect its interests.

As described by Cecile, Black Hole is "a secret organization that has been operating in Central City for seven years now."

Publisher: CBR
Date: 2020-02-04T22:15:13Z
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Album Reviews: Athena by Sudan Archives; Black Hole Rainbow by Devon Gilfillian | BCTV
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Publisher: BCTV
Date: 2020-02-07T10:26:14 00:00
Twitter: @bctv_org
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XMM-Newton maps black hole surroundings | YubaNet

January 21, 2020 – Material falling into a black hole casts X-rays out into space – and now, for the first time, ESA's XMM-Newton X-ray observatory has used the reverberating echoes of this radiation to map the dynamic behaviour and surroundings of a black hole itself.

Most black holes are too small on the sky for us to resolve their immediate environment, but we can still explore these mysterious objects by watching how matter behaves as it nears, and falls into, them.

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