Brief
Astronomers detect first radio emission from exoplanet Beta Pictoris b
The signal, traced to auroral activity, shows a magnetic field at least 200 times stronger than Jupiter’s, but it is not evidence of alien intelligence.
By Felo News Desk · Published
Researchers announced the first direct detection of radio waves coming from an exoplanet, identifying the source as the gas giant Beta Pictoris b, about 63 light‑years from Earth. The finding, described in a paper posted to arXiv on September 15, was reported by Yahoo News citing the scientists involved.
What happened
The team observed repeating radio bursts that match the expected pattern of auroral radio emission. The bursts were recorded using ground‑based radio telescopes and were found to originate from Beta Pictoris b, a planet roughly 12 times the mass of Jupiter that orbits a young star 1.75 times the Sun’s mass.
What the reports add
According to the article, the emission is produced by processes linked to an extremely strong magnetic field, similar to Earth’s northern‑light auroras but on a far larger scale. The researchers estimate the planet’s magnetic field is at least 200 times stronger than Jupiter’s, which itself generates the largest magnetosphere in the solar system. The paper notes that not all planets possess magnetic fields, and those that do gain a natural shield against solar wind that can strip atmospheres.
What was said
"I know radio signals are associated with searches for extraterrestrial intelligence," said Edo Berger, a Harvard professor of astronomy and co‑author of the study, as quoted by Yahoo News. "But this is something very different." He added, "In order to see radio waves that extend all the way to the frequencies that we observed, you need an incredibly strong magnetic field." Berger also explained that high‑energy particles spiraling inside the magnetic field produce both auroras and radio waves.
How it came about
The detection builds on earlier work reported by Felo News on 23 September, which highlighted the first direct radio signals from Beta Pictoris b and described the planet’s auroral origin. The new paper expands that coverage by providing quantitative estimates of the magnetic field strength and linking the emission to known auroral radio phenomena observed on Jupiter, Saturn and the Sun.
Key facts
- Radio bursts have been directly detected from exoplanet Beta Pictoris b. (news.yahoo.com)
- The planet’s magnetic field is estimated to be at least 200 times stronger than Jupiter’s. (news.yahoo.com)
- Beta Pictoris b is a gas giant about 12 times Jupiter’s mass, 63 light‑years from Earth. (news.yahoo.com)
- The signal is identified as auroral radio emission, not a sign of intelligent life. (news.yahoo.com)
Sources
- [1] news.yahoo.com — originally reported as “Astronomers pick up first-ever radio signal from an exoplanet — but it’s not aliens | CNN”
