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TechnologyAncient black hole collision is the most massive researchers have ever observed

23:40  03 december  2018
23:40  03 december  2018 Source:   theverge.com

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Researchers just announced the discovery of the most massive , distant black hole collision ever observed . The discovery of three other black hole collisions were announced at the same time, bringing the total number of observed mergers of these incredibly dense regions of space to 10.

“ The more black holes they see whacking into each other, the more fun it will be,” says Roger “At that time, I had not imagined that it would ever be verified,” says Vishveshwara, who is director More -stringent tests will be possible if and when LIGO detects black - hole mergers that are larger

Ancient black hole collision is the most massive researchers have ever observed© LIGO An artist’s impression of two black holes as they’re in the process of merging.

Researchers just announced the discovery of the most massive, distant black hole collision ever observed. Excitingly, the huge cosmic crash wasn’t alone. The discovery of three other black hole collisions were announced at the same time, bringing the total number of observed mergers of these incredibly dense regions of space to 10.

The discoveries were announced over the weekend at a scientific meeting in Maryland, where researchers gathered to talk about the latest research into gravitational waves. Gravitational waves are ripples in space-time that are usually caused by two objects rotating around each other. The strongest gravitational waves come from the collision of black holes or very dense objects called neutron stars.

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It is the largest black hole collision ever detected in space, and the The most likely explanation is that it 's a "second generation" black hole , formed from two smaller progenitors. A black hole that’s more massive than 120 suns could theoretically have formed from very large collapsing stars.

ASTRONOMERS have detected an ancient supermassive black hole which has a particle beam that is pointed DIRECTLY at Earth. Scientists were able to determine that it is the oldest to be discovered based on wavelength signatures of the black hole ’s redshift – the longer a wavelength

The four latest additions to the small but mighty catalogue of gravitational wave-makers were all observed between July and August 2017. The first one, which was spotted on July 29th, was the largest and most distant ever recorded. Five billion light-years away from Earth, two black holes smashed together creating a black hole about 80 times as massive as our Sun. Gravitational waves travel at the speed of light, so this giant crash took place 5 billion years ago, about hundreds of millions of years before our Solar System even existed. The combination of the two was so powerful, that the equivalent of the mass of five Suns was turned into gravity waves — waves that reached Earth on July 29th.

Scientists, including Albert Einstein, first proposed the idea of gravitational waves in the early 1900s, but researchers weren’t able to detect them until 2015. Researchers have to use huge observatories to detect gravitational waves and there are currently only a few of these detectors on Earth. The most recent discoveries were made by two detectors in the United States, called LIGO (Laser Interferometer Gravitational-Wave Observatory), and one in Europe, known as Virgo. We’re just learning about these four collisions now because, until recently, they were buried in data collected by the detectors. Researchers found the signals by sorting through and reanalyzing all the observations that the researchers collected during the last observing run.

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Gravitational waves have signaled the most massive merging of two black holes yet. The oldest and most distant gravitational waves to ever hit Earth resulted from the collision of two black Inside this disk are two smaller black holes orbiting one another. Researchers identified a flare of light

Scientists spot huge, ancient collision in space that could change our understanding of the The breakthrough marks the first time that scientists have ever seen such a megamerger. Nasa celebrated Black Friday by looking into space instead — sharing pictures of black holes .

LIGO and Virgo have starred in a few major discoveries since Virgo came online in August 2017, including the observation of colliding neutron stars which was announced last October. “In just one year, LIGO and VIRGO working together have dramatically advanced gravitational-wave science, and the rate of discovery suggests the most spectacular findings are yet to come,” Denise Caldwell, the director of the National Science Foundation’s Division of Physics said in a statement.

LIGO and Virgo haven’t made any observations since August 2017. In the downtime, researchers and engineers have kept busy by maintaining and upgrading the detectors in preparation for the next round of observations. LIGO’s third observing run is scheduled for early 2019, and Virgo, with freshly updated instruments, is expected to join in on the fun again.

Astrophysicists expect to find many more collisions during the next observational run, but they’re also looking forward to getting some new equipment in the next few decades. The European Space Agency and NASA are working together on a space-based observatory called the Laser Interferometer Space Antenna (LISA). LISA is made up of three spacecraft situated millions of miles apart. Its size and position in space mean that it will be able to detect gravitational waves that Earth-based detectors can’t. This summer, China also announced plans to build two space-based gravitational wave detectors.

All that activity means that these latest detections are just the beginning. LISA isn’t scheduled for launch until the 2030s, but researchers are already anticipating the next generation of detectors. Writing about the latest discoveries in The Conversation, Australian physicist David Blair noted that “With planned new detectors we anticipate 10 times more sensitivity. Then we expect to be detecting new signals about every five minutes.”

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