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According to the Southern Metropolis Daily, researchers from Canada and India, with the help of a giant telescope in India, recently captured radio signals from a galaxy named “SDSSJ0826+5630” nearly 9 billion light-years away from Earth. This is the first time such a radio signal has been detected from such a great distance. Factory Customized plastic mold makers from Xiamen China
According to reports, this radio wave can allow astronomers to go back in time and learn about the early universe. Scientists believe that the universe is about 13.7 billion years old.
This is the first time such a radio signal has been detected from such a great distance, and the Royal Astronomical Society announced the breakthrough in their monthly notice.
That’s equivalent to looking back 8.8 billion years, says cosmologist Arnab Chakraborty, a co-author of the radio-detection study.
However, the signal was not sent by aliens, but from galaxies that formed when the universe was only 4.9 billion years old. Factory Customized plastic mold makers from Xiamen China
A galaxy emits different kinds of radio signals, and until now, we’ve only been able to catch this particular signal from nearby galaxies, limiting our knowledge to those closer to Earth, Chakraborty said.
The detection of this wave is said to be a particularly critical discovery because the frequency is at a specific wavelength known as the “21 centimeter line,” also known as the “hydrogen line,” a spectral line of electromagnetic radiation with a frequency of 1420. .
Hydrogen gas is distributed throughout space and can help map galaxies, and the “21 cm line” is used to do just that.
Giant telescopes in India are able to pick up faint signals due to ‘gravitational lensing’.
“Gravity lensing” is a naturally occurring phenomenon that amplifies signals from distant objects, helping us peer into the early universe, researchers say.
It is reported that another galaxy bent the radio signal from “SDSSJ0826+5630” and then amplified the wave so that telescopes in India could pick it up.
Some netizens were immersed in the plot of “Three-Body Problem”, and left a message on Weibo saying: “Don’t answer!” Factory Customized plastic mold makers from Xiamen China
This isn’t the first time scientists have received mysterious signals from outer space.
Last July, astronomers at MIT and other universities in the U.S. and Canada detected a persistent signal from a distant galaxy of unknown astrophysical origin, and in 2020, a mysterious signal from near Centaurus made waves.
But do these signals mean we’re not alone? For now, at least, the answer is no — although people have sent signals into space.
According to the journal Nature, researchers said in 2021 that the Proxima Centauri signal may come from “artificial radio interference”, and the source of the “fast radio burst” signal may be a radio pulsar or a magnetar, both of which are types of neutron stars .
Daniele Michilli, a postdoctoral fellow at the Kavli Institute for Astrophysics and Space Research at the Massachusetts Institute of Technology, said that there are not many stars in the universe that can emit signals strictly according to the period. Factory Customized plastic mold makers from Xiamen China
“In our own galaxy, the examples we know of are radio pulsars and magnetars. We think this new signal could be a magnet or a pulsar on an asteroid.”
Researchers have picked up a radio signal from 9 billion light-years away, offering what appears to be a glimpse of a flicker in the early universe.
Capturing this flicker may require the wisdom of all mankind. Factory Customized plastic mold makers from Xiamen China