Tuesday, 25 June, 2019

Stephen Hawking’s last scientific paper on blackholes released

Stephen Hawking's Final Work Completed and Published by Colleagues Stephen Hawking's Final Work Completed and Published by Colleagues
Sandy Nunez | 13 October, 2018, 18:31

The paper entitled "Black Hole Entropy and Soft Hair", looks into whether black holes keep the information of the things that fall into them.

Stephen Hawking was a prolific author with a knack for making books on challenging scientific topics engaging to a wide spectrum of readers.The physicist is best known for his best-selling 1988 classic 'A Brief History of Time: From the Big Bang to Black Holes, ' which was meant to help people without a strong scientific background understand key questions of physics and human existence. In 2016, he co-authored a paper that suggested that black holes have "soft hairs" of photons that surround the objects and which theoretically preserve information. The researchers dedicated the publication to Stephen Hawking, writing: "We are deeply saddened to lose our much-loved friend and collaborator Stephen Hawking whose contributions to black hole physics remained vitally stimulating to the very end".

Seven months following his death, Professor Stephen Hawking's final work has been published. Some theoretical physicists believe they do, while others do not. Perry, unaware of how ill Hawking had become, reached out to tell him the news. The English scientist was interred in Cambridge.

According to classical physics, nothing escapes black holes - not even light.

Among the unknowns that Perry and his colleagues must try to explain are how information "is physically stored in soft hair and how that information comes out of a black hole when it evaporates", says news site Tech2. "It's telling you that soft hair really is doing the right stuff". So it turned out that black holes aren't entirely "black" - they emit "Hawking radiation", consisting of photons, neutrinos, and to a lesser extent all sorts of massive particles. Back then, Perry said that he was not aware how sick Hawking was.

Mister Rogers movie: Crew member James Emswiller dies following on-set fall
A man has died on the set of the Mister Rogers film starring Tom Hanks - Tom Hanks pictured here in January. Emswiller was a 30-year industry veteran, who had worked as a sound mixer on many high profile projects.

It involves the extreme denseness of black holes, these objects capable of warping time-space which form when huge stars collapse within themselves or when two stars collide onto each other.

"It was very hard for Stephen to communicate and I was put on a loudspeaker to explain where we had got to", Perry told the Guardian.

In the scientific article experts headed by Stephen Hawking was trying to understand the properties that may have individual items in contact with the singularity. When Perry explained the theory to Hawking, "he simply produced an enormous smile".

That theory is being explored by fellow scientists including Perry, who told the Guardian: "We think it's a pretty good step but there is a lot more work to be done".