Galactic radio sources as a research area focuses on the detection, characterization, and physical interpretation of radio emission originating within a galaxy, typically the Milky Way. It encompasses studies of synchrotron and thermal bremsstrahlung processes in supernova remnants, H II regions, pulsars, molecular clouds, and the interstellar medium, employing radio continuum and spectral line observations (e.g., HI, CO, recombination lines). This field integrates interferometric imaging, polarization measurements, and spectral modeling to constrain magnetic fields, cosmic-ray populations, ionized gas properties, and star-formation-related feedback, thereby elucidating the structure, dynamics, and energetic processes shaping galactic environments.
Astronomers have identified a possible new member of one of astronomy's strangest classes of objects: Odd radio circles (ORCs), enormous ring-like structures visible only at radio wavelengths. The newly discovered source, ...
An international team of astronomers reports the discovery of a new supernova remnant (SNR) using radio observations. The newfound supernova remnant, dubbed Abeona, is one of the faintest radio SNRs so far detected. The discovery ...
One of the most vivid portraits of "reborn" black hole activity—likened to the eruption of a "cosmic volcano" spreading almost 1 million light-years across space—has been captured in a gigantic radio galaxy.
Astronomy
Jan 15, 2026
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Astronomers from the International Centre of Radio Astronomy Research (ICRAR) have created the largest low-frequency radio color image of the Milky Way ever assembled. This spectacular new image captures the Southern Hemisphere ...
Astronomy
Oct 28, 2025
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For decades, scientists engaged in the Search for Extraterrestrial Intelligence (SETI) have probed the galaxy for signs of artificial radio transmissions. Beginning with Project Ozma in 1960, astronomers have used radio antennas ...
Astronomy
Oct 1, 2025
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Within our Milky Way galaxy, in the direction of the constellation Vulpecula, a cosmic "lighthouse" named PSR B1937+21 spins at an astonishing rate of 642 revolutions per second. It emits electromagnetic pulses that rival ...
Astronomy
Sep 8, 2025
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Argentinian astronomers have employed the upgraded Giant Metrewave Radio Telescope (uGMRT) to perform high-resolution radio observations of a nearby spiral galaxy designated NGC 4527. Results of the observational campaign, ...
In the past three years, astronomers have discovered a mysterious new type of radio source. We call these long-period transients.
Astronomy
Mar 12, 2025
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Radio astronomers see what the naked eye can't. As we study the sky with telescopes that record radio signals rather than light, we end up seeing a lot of circles.
Astronomy
Mar 4, 2025
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Using the MeerKAT telescope in South Africa, an international team of astronomers has detected 26 new Galactic radio transients. Most of them turned out to be rotating radio transients (RRATs). The finding is detailed in ...
