{"id":865537,"date":"2026-09-30T05:48:12","date_gmt":"2026-09-30T05:48:12","guid":{"rendered":"https:\/\/www.newsbeep.com\/us\/865537\/"},"modified":"2026-09-30T05:48:12","modified_gmt":"2026-09-30T05:48:12","slug":"radio-waves-from-beta-pictoris-b-may-be-a-cosmic-first","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/us\/865537\/","title":{"rendered":"Radio Waves From Beta Pictoris b May Be a Cosmic First"},"content":{"rendered":"

Astronomers<\/a> may have directly detected auroral radio emission from a planet outside our solar system for the first time. The candidate signal comes from Beta Pictoris b<\/a>, a young gas giant roughly 63 light-years away, picked up by the MeerKAT radio telescope array in South Africa. The research, led by Kevin N. Ortiz Ceballos and collaborators at the Center for Astrophysics, Harvard and Smithsonian, and the University of Oregon, was posted to arXiv on<\/a> September 15, 2026, and has not yet undergone peer review.<\/p>\n

What MeerKAT Heard<\/p>\n

The detection rests on a distinctive radio signature that physicists recognize as a direct imprint of a planetary magnetic field.<\/p>\n

MeerKAT\u2019s 64 antennas recorded both rapid, recurring bursts and persistent radio emission across a frequency range of 0.85 to 3.5 gigahertz. The signal showed high circular polarization, consistent with electron cyclotron maser emission: coherent radio waves produced when energetic electrons spiral along magnetic field lines.<\/p>\n

That process is well understood on Earth<\/a> and Jupiter, where it drives auroral radio activity similar in principle to the northern lights. There it generates some of the most intense natural radio signals in the solar system.<\/p>\n

The highest detected frequency implies a minimum magnetic field strength of approximately 1,250 gauss at the emission site. Earth\u2019s surface field runs around 0.5 gauss, while Jupiter\u2019s reaches roughly 14 gauss in its strongest regions. Beta Pictoris b, on this preliminary measurement, dwarfs both by a wide margin at the radio-emitting region.<\/p>\n

The team\u2019s preprint states directly<\/a>: \u201cHere, we report the first direct detection of auroral radio emission from an exoplanet, the giant planet Beta Pictoris b, with the MeerKAT array.\u201d<\/p>\n

\"\"Radio detections of \u03b2 Pic b in four observing sessions and at two frequency bands. Shown are full-track integrations of the total intensity (Stokes I, top) and circularly polarized (Stokes V , bottom) images centered on the position of \u03b2 Pic b after proper- and orbital-motion propagation. The contours indicate signal-to-noise ratios ranging from 3 to 21, in steps of 3 (dashed contours are negative flux), while red and blue colors indicate positive and negative flux densities, respectively. Negative flux densities in Stokes V indicate left-handed circular polarization; in the first observation the handedness of polarization is not constrained and we use a greyscale colormap instead (Methods). \u2014 [astro-ph.EP]Why This Detection Is Different<\/p>\n

Localizing the emission to the planet rather than its host star is what sets this result apart from every prior exoplanet radio search.<\/p>\n

A planetary magnetic field generates a magnetosphere, a region that deflects charged particles streaming from the host star. On Earth, that shield contributes to keeping the atmosphere stable over geological time, alongside gravity, atmospheric chemistry, and other factors. Detecting one around an exoplanet is relevant to long-running questions about habitability, though Beta Pictoris b itself is a massive, hot gas giant with no solid surface.<\/p>\n

Discovered through direct imaging<\/a> in 2008, Beta Pictoris b is roughly 12 times Jupiter\u2019s mass and located about 63 light-years away. It is approximately 20 to 25 million years<\/a> old, young enough that residual internal heat may be fueling an unusually powerful magnetic dynamo.<\/p>\n

Unlike earlier radio searches<\/a> that returned ambiguous results or no detection at all, MeerKAT\u2019s interferometric design allowed the team to spatially separate the planet\u2019s signal from its far brighter host star. That localization is the core distinction between this result and prior attempts.<\/p>\n

Observations ran through 2025 and early 2026, with follow-up sessions in May 2026. The 3.5-gigahertz upper observing limit means the 1,250-gauss figure is a lower bound at the emission region. It is not a complete map of the planet\u2019s global field.<\/p>\n

Peer review and independent follow-up observations will determine whether the detection holds. If confirmed, the result would establish the first direct magnetic-field strength measurement for any planet beyond our solar system<\/a>. It would also open a new observational tool for characterizing distant worlds. Extending the method to smaller, rocky planets<\/a> will require considerably more sensitivity. Their weaker fields and denser atmospheres may eventually demand space-based or lunar far-side radio facilities.<\/p>\n","protected":false},"excerpt":{"rendered":"Astronomers may have directly detected auroral radio emission from a planet outside our solar system for the first…\n","protected":false},"author":2,"featured_media":865538,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[32],"tags":[79],"class_list":["post-865537","post","type-post","status-publish","format-standard","has-post-thumbnail","category-science","tag-science"],"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/posts\/865537","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/comments?post=865537"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/posts\/865537\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/media\/865538"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/media?parent=865537"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/categories?post=865537"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/tags?post=865537"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}