Do Repeating Radio Signals Indicate an Exoplanet with a Magnetosphere? - by spacewriter
“We saw the initial burst and it looked beautiful,” said Pineda. “When we saw it again, it was very indicative that, OK, maybe we really have something here.”
An artist’s conception of YZ Ceti b, a terrestrial-type exoplanet orbiting an M-type star. Its mass is 0.7 Earths. Scientists may have found a way to detect a possible magnetosphere around it. Courtesy NASA Exoplanet Exploration. The study also provides a look at the environment around stars and how they interact with planetary magnetic fields. “This idea is what we’re calling “extrasolar space weather'” said Pineda. “We have been doing this radio monitoring of stellar systems like these in the hope of gathering evidence of the magnetic interaction of the star and planet.”Using extrasolar space weather to look for magnetospheres around exoplanets is quite new, said Pineda in a follow-up email.
This discovery will need to be confirmed by a great many other observations in the coming years, according to Pineda and Villadsen. “This could really plausibly be it,” says Villadsen. “But I think it’s going to be a lot of follow-up work before a really strong confirmation of radio waves caused by a planet comes out.”On Earth, our magnetic field protects us from the solar wind and some aspects of flares and coronal mass ejections. Of course, we are affected by some space weather.
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