Scientists may have discovered the ‘we’ of the universe that could change astronomy forever


Astrophysicists attempting to detect the presence of low-frequency gravitational waves are onto something, and may be one of the greatest discoveries in the history of mankind.

Depiction of gravitational waves, tonia klein

Collaborating from one side of the Earth to the other, a signal has appeared in the figures of a project that uses the rhythm of the stars’ movements to detect these real-haughty waves, and scientists think it is gravity The backwash can be evidence of background, a result of more than anything in recent history.

Researchers, originating from the North American Nanohartz Observatory for Gravitational Waves (NANOGrav), are cautious, knowing that both macro and micro aspects of their data can mislead them.

His work includes continuous monitoring of 45 pulsars over a period of 12 years. Pulsars are super-dense stars that rotate at incredibly fast speeds, producing a constant stream of light, radiation, and even sound.

Being they are trying to measure one of the largest forces in the universe, instead of a laboratory in Pulsar Colorado, scientists work to expand the monitoring equipment of scientists to larger parts of the Milky Way galaxy.

His recent paper showed that Pulsar’s constant spinning was interrupting for a few nanoseconds in a way that was repeated on every one of the 45 stars, exactly the same effect as the low-frequency, cosmic-trip There would be gravitational waves.

“It is incredibly exciting to see such a strong signal from the data,” said Joseph Simon of the University of Colorado. “However, because the gravitational-wave signals we have been searching for the entire duration of our observations, we need to understand their noise carefully.

“This leaves us in a very interesting place, where we can strongly control some known noise sources, but we cannot yet say whether the signal is actually from gravitational waves. We will need more data for that. “

A universal

When in 2015, researchers at the Laser Interferometer Gravitational-Wave Observatory (LIGO) discovered evidence of a single gravitational wave, a wave in the fabric of spacetime caused by a collision of two black holes, it won the Nobel Prize in Physics.

The wave of which his laser array was detected was equivalent to a snake drum hit – a second-long event, after which silence reigned.

In contrast, the Nanjorv project from the US and Canada is trying to measure gravitational waves that take months or even longer Years Pass over the earth.

These waves are known as a gravitational force known as the Gravitational Wave Background (GWB), which is equivalent to the low, continuous mixed hum of sounds in the cafeteria or party with waves in space-time. There are millions of catastrophic events that destroy the universe. .

Like many discoveries, particularly those related to sub-atomic particles or dark matter, the method of observation involves effects, not actual objects. Therefore the sensitivity of the detective method must be exquisite, given that the object is invisible and so slow and heavy that it requires millions of light years and decades of detective focus to see its effect on the cosmic environment.

Therefore, NANOGrav plans to add more pulsars to its observations in collaboration with the International Pulsar Timing Array and study them for longer.

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“The next few years are going to be really exciting for Nangovarv as we put the next data set together and search it for gravitational waves.” Said Sarah Wigland, assistant professor of physics at Uni. Her University Press for Wisconsin.

Implications of gravitational wave background

As universal as the tidal force on Earth, everything about our understanding of the universe would have to conform to the GWB.

Its power arises from the most cataclysmic events in existence, such as collisions or mergers between two supermassive blackholes, objects billions of times larger than the sun, and which theoretically sit at the center of many galaxies.

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“These indicate the first indication of a gravitational wave background that supermassive black holes potentially merge and we are sinking into a sea of ​​gravitational waves triggered by merging supermassive black holes in galaxies in the universe,” Julie Comerford, an associate Professor CU Boulder and NANOGrav team member on astrophysics and planetary science.

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The power of the GWB will open up whole new fields of study, particularly those related to the esoteric supremacial blackhole, and one day if we should become an astronaut, the GWB would be like many other forces of nature, the factor of travel on Earth. is. , Factors in space travel since the power of low-frequency waves can alter the positions of planets, stars, and possibly even galaxies.

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