Exoplanets emit emission signals?
December 17 A team of international scientists led by Cornell University in the United States monitored the universe through a radio telescope array and detected a series of radio pulses from Borus. This signal may be the first radio pulse collected from a planet outside the solar system.
The research results were published in the journal Astronomy and Astrophysics on the 16th.
Using the low-frequency array of the Dutch radio telescope, researchers found that the Tau Boötis system (which includes a binary star and an exoplanet) about 51 light-years away from the solar system, shows an important radio signal. This is a unique and potential window to understand the planet’s magnetic field.
“This is one of the first clues we have proposed to detect exoplanets in the radio field.” “We think this was launched by the planet itself,” said Jack D. Turner, one of the research team leaders and a postdoctoral fellow at Cornell University. This is consistent with theoretical predictions in terms of the intensity and polarization of radio signals and planetary magnetic fields.”
Ray Jayawadhana, co-author of the paper, said, “If confirmed by subsequent observations, the detection of this radio explosion will open a new window for us to observe exoplanets and a new way to explore the alien world decades light-years away.”
“Observing the magnetic fields of exoplanets helps astronomers decipher the planet’s interior and their atmospheric properties, as well as the physical principles of star-planet interaction,” Turner said. “The magnetic fields of exoplanets can protect the atmosphere from solar wind and cosmic rays, thus making them more habitable.”
There is still uncertainty about the source of pulses.
Two years ago, researchers detected Jupiter’s radio radiation signals and scaled these radiations to simulate possible signals from distant Jupiter-like extraplanets. These results serve as templates for searching for radio radiation from exoplanets 40 to 100 light-years away. After carefully studying the results of nearly 100 hours of radio observations, the researchers found the extra-system radio “Jupiter” in the Tau Boötis system.
On the other hand, scientists believe that the radio signal is very weak and its source is still very uncertain, so follow-up observation is still crucial.
Editor-in-Chief Circle Point
The radio signals in the depths of the universe always remind us of extraterrestrial civilization at the first time. But in the vast universe, the earth is just a small stage.
Even if we are full of vitality, it is still as small as mustard on the scale of the universe. The probability of wanting to receive radio signals from other intelligent civilizations on the earth is actually very, very low.
About eight years ago, NASA discovered a cosmic radio signal, which was once suspected to be the first “candidacy” signal from alien civilization, but it turned out to be only a terrestrial radio frequency interference.
Over the years, astronomers have never given up similar exploration and search, because even if we receive messages that are not civilized, it also gives mankind more opportunities to discover the “new world”.