Topic
Branch of astronomy that studies celestial objects through radio emissions, using telescopes and arrays to probe hydrogen gas and galaxies.
The team used distant quasars as fixed reference points to separate the planet's signal from its star's, then read a magnetic field of at least 1,250 gauss off the emission. The preprint has not been peer reviewed.
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CHIME, a Canadian radio telescope, detected the 21 cm glow of distant hydrogen in 94 nights of its own data, without checking against any other telescope. The team sees a cheaper route to studying dark energy, though so far the paper establishes only that the signal is real.
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CHIME, a Canadian radio telescope, detected the faint glow of hydrogen from a universe about 5 billion years old using 94 nights of its own data. Any test of dark energy theories comes later, from years of archived observations still to be analysed.
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Astronomers led by IISER Pune's Pavan Vijay Khadekar report four pairs of radio hotspots, aged 4.5 to 20.5 million years, around one elliptical galaxy. Their preprint makes the case for the first known quadruple-double radio galaxy, a dated record of one black hole's restarts that wider surveys would need to turn into a rate.
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Star formation has fallen to under half its rate of 4.5 billion years ago, but a FAST and DESI measurement finds the atomic hydrogen reservoir down only about a third, which moves the bottleneck downstream.
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SKA Observatory engineers found a sensitivity dip at 125 MHz on the 256-antenna AAVS3 prototype and ruled its sunflower layout out of the final telescope. The modified spiral that replaces it drops the repeating 2.4-meter spacings and has so far been checked only in simulation.
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MPIA astronomers used ALMA to image WISPIT 2b, a gas giant five times Jupiter's mass, interacting with the gas it formed in. Formation models have rested on simulations and indirect evidence, so a planet still feeding on its birth gas gives them a direct check.
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A chapter in the SKAO's 2026 science book sets out how the Square Kilometre Array could read auroral radio emission from planets around ultracool dwarfs, the one target class with radio detections going back decades.
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Above-average June rain and a very wet August in Western Australia's Murchison brought carpets of wildflowers that Landsat 8 caught in late August, in a before-and-after pair where the ground is greener and the flowers themselves go uncounted.
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Andrew Mummery and Adelle Goodwin report that late radio jets in ten star-shredding events switched on as the feeding rate fell to about 2% of the Eddington limit, the threshold already known from Milky Way black holes.
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Adelle Goodwin and Andrew Mummery modelled ten stars torn apart by supermassive black holes and found the late radio jets turning on at the same accretion threshold already known from much smaller black holes in our galaxy.
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PSR J1637-4642 spent about nine years of its archival record doing nothing unusual, then jumped its spin rate by 2.7 parts per million in 2018 and twice more since. That says something about baselines as well as neutron stars.
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Each cloud holds about 3 million solar masses of hydrogen inside a halo of 3.7 billion, the gas fraction cold dark matter models predict for a halo that never made a star, and also what a tidal tail could imitate.
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Higher-resolution mapping turns star-forming clouds into comparisons rather than catalogues, but first someone has to check that the finer maps agree with the ones built over previous decades.
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