Science

Astronomers capture black hole "dragging spacetime"

Astronomers capture black hole

Astronomers have discovered a black hole, nearly 8,000 light-years from Earth, pumping rapidly swinging plasma jets into the surrounding universe at a speed so fast that it is dragging spacetime.

The global team of astronomers, which included Dr Alex Tetarenko working at the East Asian Observatory in Hilo, published their findings today in the journal Nature.

Monday's Nature report comes from a project launched in Charlottesville by James Miller-Jones, originally a scientist at the National Radio Astronomy Observatory and now a professor at Curtin University in Perth, Australia; co-author and UVA astronomy chair Craig Sarazin; and Greg Sivakoff, who completed his graduate and post-doctoral studies at UVA before becoming a professor at the University of Alberta in Edmonton, Canada.

To the left of the clip, a star can be seen being pulled into the black hole.

The differing factor in V404 Cygni is that it is contemplated that the disk of matter and black hole are disarranged.

This misalignment means that the inner part of the black hole's disk is wobbling like a spinning top, causing the jets to be fired out in different directions as it changes orientation.

V404 Cygni is a binary system in the constellation of Cygnus.

It is relatively smaller in size compared to other black holes, with mass about nine times that of the Sun.

"Many people have this vision of black holes where if something gets too close to a black hole, the black hole will eat the material", said Gregory Sivakoff, a U of A astrophysicist and professor in the department of physics, said Monday.

V404 Cygni was initially recognized as a black hole in 1989 when it emanated an enormous flare-up of jets and radiations. Previous outbursts associated with this black hole were noted in 1938 and 1956 and found on archival photographic plates.

The whole world stopped and stared, facing all telescopes in the direction of the outburst. "So we have this unbelievable observational coverage".

Normally, when astronomers see jets spewing from a black hole, the features are oriented in one direction.

Some of the particles falling into the black hole escape through relativistic jets, long beams of energetic plasma that flow from the black hole's axis of rotation at more than half the speed of light. These jets were firing off in different directions at different rates over a couple of hours.

"Our best explanation is that this is actually caused by an effect of Einstein's general relativity, whereby the black hole is spinning and it's pulling space and time around with it", he said.

While V404 Cygni's accretion disk is about 10 million kilometers wide, Miller-Jones pointed out that only the inner few thousand kilometers is warped.

"The inner part of the accretion disk was precessing and effectively pulling the jets around with it", Miller-Jones said. "You can think of it like the wobble of a spinning top as it slows down, only in this case, the wobble is caused by Einstein's general theory of relativity", he added. Miller-Jones is also an associate professor at Curtin University's International Centre for Radio Astronomy Research.

The discovery was made using a continent-sized radio telescope, called the "Very Long Baseline Array", with 10 dishes across the United States, from the Caribbean to Hawaii.

"This is the only mechanism we can think of that can explain the rapid precession we see in V404 Cygni", Miller-Jones said in the press release.

It's so fast that the usual method radio telescopes use for imaging space were practically useless.

'It was like trying to take a picture of a waterfall with a one-second shutter speed'.

Dr Alex Tetarenko outside of the James Clerk Maxwell Telescope Office in Hilo, Hawaiʻi. At its center is a black hole that is now in the process of absorbing a low mass nearby star. So, they captured more than 100 images with 70-second exposures and pieced them together into an animation.



Like this

loading...
loading...

Latest


03 May 2019
National Chase tried to be amusing on Twitter. It didn't go well
The PR mishap has exposed the anger and frustration people feel at big banks: many users were venting about bank fees that eat away at their balance.

03 May 2019
Enigmatic Beluga whale off Norway staying near humans
Russian Federation has major military centers in and around Murmansk at Russia's north west, on the Kola Peninsula. The whale is so comfortable with people that it swims to the dock and retrieves plastic rings thrown into the sea.

03 May 2019
Matchmaking: Tennis's Stephens, soccer's Altidore engaged
The duo announced their engagement with a pair of social media posts Monday. "Forever yes", she wrote alongside the sweet pic. Open champion Sloane Stephens announced she is now engaged to USMNT striker and Toronto F.C. star Jozy Altidore .

02 May 2019
Tyreek Hill fights back in letter: Child's mother is to blame
However, Pettlon does say that it's inconsistent with the language used in conversation with Espinal in the past several months. Espinal alleged Hill punched their son in the chest, but his lawyer said that was the first he ever heard of it.

02 May 2019
NASA science mission failures due to faulty materials from partner
When testing results are altered and certifications are provided falsely, missions fail ", Norman said. NASA has also proposed the Hydro Extrusion Portlant Inc., formerly known as SPI, be debarred as well.

02 May 2019
Facebook bans figureheads of 'dangerous' far-right movements
Yiannopoulos, another alt-right social media star, publicly praised McInnes this year, and Loomer appeared with him at a rally. The decision applies to both Facebook's flagship social network and Instagram, its photo-sharing app, the company confirmed.

02 May 2019
Trump to present Medal of Freedom to Tiger Woods next week
Trump had already revealed in a tweet last month that Woods was to receive the honour following his performance at the Masters. Tiger Woods opted to sit out this week's Wells Fargo Championship, ostensibly to rest his body ahead of the PGA Championship.

02 May 2019
Avengers: Endgame tops Black Panther as most-tweeted movie
The actor, 54, reportedly earned $5 million for his three days of work on "Spider-Man: Homecoming". It's also the new Twitter movie champion set to the heroic tune of 50 million tweets.

02 May 2019
Italian GP set to continue at Monza to 2024
Silverstone on Tuesday dismissed reports as "premature" that it had reached a new three-year deal over the British Grand Prix. The BBC has reported that the Italian Grand Prix is set to remain on the Formula 1 calendar until at least 2024.

02 May 2019
Defying Congress, US Attorney-General Barr to skip Mueller hearing
She said, "The attorney general of the United States of America was not telling the truth to the Congress of the United states". He painted the confrontation with Barr in stark terms. "I don't think the government had a prosecutable case", Barr said.