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Radio Astronomy

All articles tagged with #radio astronomy

science5 hours ago

Ultra-Deep Radio Map of the Milky Way Unmasks Hidden Remnants

Astronomers released the most detailed low-frequency radio image of the Milky Way’s southern Galactic Plane, built from 141 nights of observations with the Murchison Widefield Array in Western Australia and processed with over a million CPU hours for the GLEAM-X survey. The map doubles previous resolution and sensitivity, catalogs about 98,000 radio sources, and reveals numerous supernova remnants and star-forming regions, along with insights into pulsars. It marks a milestone in low-frequency radio astronomy and lays groundwork for future SKA-Low observations.

via The Daily Galaxy|
#gleam-x#milky-way#mwa
science-and-technology13 days ago

Mitigating Satellite RF Pollution and Scope Photobombs

Satellite constellations like Starlink are causing radio interference and optical photobombing issues for astronomers due to poorly designed antennas and spectrum leaks. While regulations are evolving to mitigate these problems, hardware updates and better standards are needed to ensure coexistence between scientific and commercial satellite uses, with ongoing efforts to improve antenna design and spectrum management.

via theregister.com|
#radio-astronomy#rf-pollution#satellite-interference
science17 days ago

Scientists Discover First Active Triple Black Hole System in Galaxy Merger

Astronomers have confirmed the first known system where three galaxies, each hosting active supermassive black holes, are merging, providing new insights into galaxy and black hole evolution through high-resolution radio imaging. The system, located 1.2 billion light-years away, shows all three black holes actively feeding and launching jets, a rare and significant discovery that advances our understanding of cosmic growth processes.

via Indian Defence Review|
#agn#black-holes#cosmic-collision
science2 months ago

Revolutionary Radio Color Map Offers Unprecedented View of the Milky Way

Astronomers have released the largest low-frequency radio color image of the Milky Way, revealing detailed structures like supernova remnants, star-forming regions, and pulsars, created from data by the Murchison Widefield Array in Australia, providing new insights into our galaxy's hidden features and setting the stage for future observations with the upcoming SKA-Low telescope.

via Space|
#gleam#milky-way#radio-astronomy
science2 months ago

Scientists Detect Mysterious Radio Signals from 71-Year-Old Comet

Astronomers in China detected unusual radio signals from comet 12P/Pons-Brooks, revealing the most distant detection of ammonia molecules in a comet, which may explain its outbursts and offers insights into the early solar system's chemistry, with potential implications for studying interstellar objects and extraterrestrial technology.

via The Debrief|
#ammonia-molecules#comet-12ppons-brooks#radio-astronomy
science3 months ago

Astronomers Detect Ancient Signal from Unexplored Cosmic Era

Astronomers using the Murchison Widefield Array have made the clearest attempt yet to detect ancient radio signals from the universe's early dark ages, but found no evidence of the expected 21-centimeter emission, suggesting the universe was warmer than previously thought around 800 million years after the Big Bang, paving the way for future observations with the upcoming Square Kilometre Array.

via Live Science|
#21-centimeter-signal#black-holes#cosmic-reionization
science3 months ago

Astronomers Detect Ancient Signal from Unexplored Cosmic Era

Astronomers using the Murchison Widefield Array have made the most detailed radio observations of the early universe, suggesting it was warmer than previously thought around 800 million years after the Big Bang, and bringing us closer to detecting the elusive 21-centimeter hydrogen signal that could reveal details about the first stars and black holes.

via Yahoo|
#21-centimeter-hydrogen-line#black-holes#cosmic-reionization