Saturday, 27 February, 2021


Scientists detect mysterious 'intermediate mass' black hole

Up to now black holes with mass 100 to 1,000 times that of our Sun have never been found Up to now black holes with mass 100 to 1,000 times that of our Sun have never been found
Kristine Garrett | 05 September, 2020, 16:15

"This is the largest black hole that we have discovered with gravitational waves, and is what we would call an 'intermediate-mass black hole'". Do they grow from stellar-mass black holes, which are born when a star collapses, or are they born via an undiscovered means? He said, "There would be no way to see two black holes spinning around each other and colliding if not for gravitational waves".

The gravitational wave signal from the collision, detected by the LIGO and Virgo interferometers on 21 May 2019, was extremely short compared to previous collision detections. And the energy that it released through the universe is the equivalent to around eight solar masses, spreading out across the universe.

"We've never seen something like this before", said Evan Goetz, a research associate at the University of British Columbia's physics and astronomy department and co-author of the paper published on Wednesday in the journals Physical Review Letters and Astrophysical Journal Letters.

"They are the million solar-mass elephants in the room".

"It seems too massive to have been formed from a collapsed star, which is where black holes generally come from".

All the black holes observed before this detected signal were either stellar-mass black holes, or supermassive black holes.

The search is over.

How could a black hole form in the forbidden range?

The gravitational wave event only lasted about one-tenth of a second.

With this detection, LIGO has observed the unexpected and led to another breakthrough. Virgo is a gravitational-wave observatory in the Cascina commune of Italy.

Artist's impression of binary black holes about to collide.

The event has been catalogued as GW190521 in the research. This operates in three super-sensitive gravitational wave-detection systems in America and Europe.

"This doesn't look much like a chirp, which is what we typically detect", Virgo researcher Nelson Christensen, from the French National Centre for Scientific Research (CNRS), said in a press release. That is, the LIGO-Virgo detectors are more sensitive to these mergers than others.

There are two special parts to the findings: one, the sizes of the pair of black holes, particularly the one that is 85 solar masses; and two, the final black hole itself.

It came from two black holes weighing in at 85 and 66 times the mass of the Sun, respectively. One of the two merging black holes falls in an "intermediate mass" range - a misfit that can not be explained by traditional knowledge of how black holes form.

Numerical simulation of two black holes that spiral in and merge, emitting gravitational waves.

"There are a number of different environments in which this system of two black holes could have formed, and the disk of gas surrounding a supermassive black hole is certainly one of them", said Dr. Vaishali Adya, a postdoctoral researcher in the ARC Centre of Excellence for Gravitational Wave Discovery (OzGrav) at the Australian National University. Ultimately, the core of such a star collapses under its own weight before rebounding back out as a dramatic supernova. These can contain hundreds of thousands of ancient stars: ideal breeding grounds for black holes.

Instead, when a star that large begins its death throes, a phenomenon known as "pair instability" kicks in, and the star becomes unstable to the point it avoids gravitational collapse - at least, for a while. As for the supermassive black holes, they have a mass range of millions to billions of Sun. But how did it form? Astronomers believe they are needed as building blocks for the supermassive black holes, and there is indirect evidence for their existence, but this may be the most convincing sighting yet, albeit right at the bottom of the range.

"Up to now we knew of two populations of black holes", Berry said. This is surprising, as black holes and their mergers are normally dark to telescopes. "It was very hard to interpret", says team member Alessandra Buonanno, director of the Max Planck Institute for Gravitational Physics (Albert Einstein Institute).

The process to discover this long-hunted black told required scientists to measure the shockwaves that the merger produced, also known as gravitational waves. The signal could also be from a cosmic string produced just after the universe inflated in its earliest moments - although neither of these exotic possibilities matches the data as well as a binary merger.

Recommended

loading...
...
  • Nintendo Revives 1980s 'Game & Watch' Handheld With Super Mario Bros

    Nintendo Revives 1980s 'Game & Watch' Handheld With Super Mario Bros

    Super Mario Bros . 35 will be available to play on the Nintendo Switch on 1 October as a digital freebie for online members. But eventually, the company phased them out in favor of the Game Boy, which could render moving pixels on the LCD screen.
    Protesters Gather Outside Police Station After Teenager Shot Dead in Washington

    Protesters Gather Outside Police Station After Teenager Shot Dead in Washington

    In the police video, an officer is seen quickly exiting a vehicle and shouting: "Don't move, don't move", before shooting Kay. By Thursday, demonstrators gathered outside the home of Mayor Muriel Bowser calling for her to fire the chief.
    Thai king reinstates once-disgraced royal consort

    Thai king reinstates once-disgraced royal consort

    She had not been seen publicly after her fall from grace past year and her whereabouts were never made clear. The 68-year-old king has seven children by three previous marriages, all of which ended in divorce.
  • Pope has first public audience in 6 months

    Pope has first public audience in 6 months

    Entrance to Wednesday's audience was free, with face masks and social distancing. There was a rush to meet the pope by attendees as he entered the courtyard.
    Williams family to withdraw from Formula 1 team

    Williams family to withdraw from Formula 1 team

    It is my genuine hope that the process we've gone through brings them the success they deserve. Team founder Sir Frank Williams with Nigel Mansell in 1986.
    COVID-19 vaccine could come in late October

    COVID-19 vaccine could come in late October

    There were 20 participants each in the frozen and freeze-dried vaccine groups, the Lancet study noted. Most experts say that it is reasonable to expect the Phase 3 tests to be completed by year's end.
  • The Witcher 3 Is Getting Ported To PS5 And Xbox Series X

    The Witcher 3 Is Getting Ported To PS5 And Xbox Series X

    That last part is particularly good news given that respawning in the game can take a minute or so, at least on this author's PS4. CD Projekt RED has revealed that there will be a free The Witcher 3 next-gen update for Xbox Series X and PlayStation 5.
    Only One 2020 iPhone Will Have mmWave 5G. Here's Why That Matters

    Only One 2020 iPhone Will Have mmWave 5G. Here's Why That Matters

    Apple's messaging to users, as illustrated in the latest promo images for iOS 14, doesn't give surveillance a nice ring.
    Maisie Smith and Jaimie Laing Join the Lineup For STRICTLY COME DANCING

    Maisie Smith and Jaimie Laing Join the Lineup For STRICTLY COME DANCING

    He joked that the Hokey Cokey was one of his favourite dances and that he would be trying to introduce it to Strictly this year. Maisie has already made an entrance onto the Strictly dance floor, having taken part in last year's Children in Need special.
  • China, India defense ministers meet over tensions

    China, India defense ministers meet over tensions

    Furthermore, he reiterated that he is talking to both New Delhi and Beijing about the ongoing situation. Several rounds of military and diplomatic talks on the crisis have been unsuccessful.
    Prince Harry and Meghan sign deal with Netflix to produce programs

    Prince Harry and Meghan sign deal with Netflix to produce programs

    The couple relocated to Los Angeles after moving to Canada , where Meghan lived for years while filming her USA TV series, Suits . The Duke of Sussex can now be seen on the streaming service in Rising Phoenix , a documentary about the Paralympic Games.

    These Leaked OnePlus 8T Specs Won't Surprise You

    The handset is reportedly bringing a new image sensor, which is said to deliver a better image quality. The setup is likely to feature a 48MP primary camera sensor with a new Sony IMX689 sensor.

Samsung might have fixed the worst thing about folding phones Samsung might have fixed the worst thing about folding phones It is also said to be capable of tracking sleeping patterns and on the basis of that give a daily analysis and a Sleep Score. Although the firm said it's able to charge "compatible" devices, it looks like you should be able to put most devices on.

United States issues worldwide alert over North Korea's missile procurement push United States  issues worldwide alert over North Korea's missile procurement push But this is the first time multiple USA agencies issued such an advisory over ballistic missiles procurement. It says companies that assist North Korea's procurement efforts risk sanctions.

More New COVID-19 Cases in Marion County More New COVID-19 Cases in Marion County Call ahead before visiting your primary care physician (family doctor) to let them know you may have or have COVID-19. The state received the results of 149,273 COVID-19 tests in the 24 hours leading up to Friday afternoon.

Coronavirus restrictions reimposed in western Scotland Coronavirus restrictions reimposed in western Scotland He said: "The virus is spreading here again, just like anywhere else in the United Kingdom and Europe". First Minister Nicola Sturgeon said the rules will be in force for two weeks.

US first lady defends Trump over alleged 'losers' quip US first lady defends Trump over alleged 'losers' quip Biden said Trump's reported comments led him to come the closest he's been to losing his temper during the 2020 presidential race. Several current and former White House officials vehemently pushed back on the report.

Turkey says France's Macron 'hysterical' over Syria, Libya, East Mediterranean Turkey says France's Macron 'hysterical' over Syria, Libya, East Mediterranean Russian Federation maintains a sizeable naval presence in the eastern Mediterranean and regularly conducts naval manoeuvres there. Further complicating matters is that Turkey is a member of North Atlantic Treaty Organisation , but not of the European Union.

Ship feared sunk with 42 crew and nearly 6000 cows on board Ship feared sunk with 42 crew and nearly  6000 cows on board A bundle of orange rope and a life jacket bearing the ship's name were also recovered, according to a coast guard statement . Coast guard video shows rescuers carefully maneuvering their boat in choppy waters to safely pluck Sareno out of the water.

IPL 2020: 3 Players Who Can Replace Harbhajan Singh IPL 2020: 3 Players Who Can Replace Harbhajan Singh The 40-year-old, who has been a part of CSK during the past two seasons is now in Jalandhar, Punjab with his family and requested privacy.

Other Corticosteroids Help COVID-19, Too Other Corticosteroids Help COVID-19, Too Researchers said the benefit was shown regardless of whether patients were on ventilation at the time they started treatment. Eighteen percent of patients on steroids reported side effects compared to 23 per cent of patients on usual care or placebo.

Belarus retaliates against Baltic sanctions Belarus retaliates against Baltic sanctions Lukashenko has accused foreign powers of being behind the protests, but has provided no evidence. Thousands were arrested and many reported being tortured in custody.

NY state probes Black man’s death after police use ‘spit hood’ restraint NY state probes Black man’s death after police use ‘spit hood’ restraint And in Washington police on Wednesday fatally shot an 18-year-old black man after responding to reports of a man with a gun. They apprehended him and placed him in a spit hood because he had reportedly told them that he had contracted coronavirus .

These states are enduring the worst unemployment rates These states are enduring the worst unemployment rates Permanent job losses increased by more than half a million to 3.4 million. "We're well past talking about a V-shaped recovery". The size of Alberta's labour force declined by 16,000 in August, which was a drop of 0.6 per cent from July.

More 2022 Hyundai Tucson Design Details Visible in Teaser Photos More 2022 Hyundai Tucson Design Details Visible in Teaser Photos The all-new (*14*) 2021 Hyundai Tucson will make its world premiere via an online live stream on September 14 at 5:30 p.m. The jewel-like grille looks quite attractive while the signature DRL units seamlessly flown in from either side.

Actor Akshay Kumar launches multi-player mobile game FAU-G Actor Akshay Kumar launches multi-player mobile game FAU-G And today morning, it was removed from the Google and Apple App Stores, leaving several million users in India in the dark. Yes, spelled as (Faw-ji), the new title has just been announced on social media but few details are yet to be revealed.

Tech rout deepens, Nasdaq set for worst two-day fall since March Tech rout deepens, Nasdaq set for worst two-day fall since March Treasuries and the dollar were steady, with moves into haven assets muted despite the pronounced drop in equities. Tens of millions of Americans remain unemployed however, as seen by this week's unemployment benefits numbers.