Scientists in Australia have discovered a strange new phenomenon in deep space – “Odd Radio Circles” – that appear in radio telescope images as mysterious circles or rings. Source: https://earthsky.org/space/astronomers-ponder-odd-radio-circles-in-space…
Tag: radio telescopes
Array of radio telescopes reveals explosion on the surface of a hot dead star
An international group of researchers observed a source of variable gamma rays identified in 2010 by the NASA satellite Fermi. They used a technique called VLBI, that combines data from several radio telescopes on Earth, to produce the sharpest images to date. Surprisingly, the source of gamma rays was a symbiotic nova, a peculiar stellar system known to astronomers as V407…
Supergiant atmosphere of Antares revealed by radio telescopes
An international team of astronomers has created the most detailed map yet of the atmosphere of the red supergiant star Antares. The unprecedented sensitivity and resolution of both the Atacama Large Millimeter/submillimeter Array (ALMA) and the National Science Foundation’s Karl G. Jansky Very Large Array (VLA) revealed the size and temperature of Antares’ atmosphere from just above the star’s surface, throughout…
Where neutrinos come from
Russian astrophysicists have come close to determining the origin of high-energy neutrinos from space. The team compared data on the elusive particles gathered by the Antarctic neutrino observatory IceCube and on long electromagnetic waves measured by radio telescopes. Cosmic neutrinos turned out to be linked to flares at the centers of distant active galaxies, which are believed to host supermassive black…
Will SETI 2.0 lead to a discovery of intelligent aliens?
2020 has been an exciting year so far for SETI – the search for extraterrestrial life – in terms of new technological developments and strategies. Source: https://earthsky.org/space/seti-breakthrough-listen-new-technologies-and-strategies…
Black Hole Photo May Also Have Captured Light From Around the Universe
“When you point a telescope at a black hole, it turns out you don’t just see the swirling sizzling doughnut of doom formed by matter falling in,” reports the New York Times. “You can also see the whole universe.” Light from an infinite array of distant stars and galaxies can wrap around the black hole like ribbons around a maypole, again…
Astronomers detect biggest explosion in history of universe
Scientists studying a distant galaxy cluster have discovered the biggest explosion seen in the universe since the Big Bang. Source: https://earthsky.org/space/astronomers-detect-biggest-explosion-history-universe…
Using radio waves to discover and study exoplanets
A new study from researchers in the Netherlands shows how scientists can detect exoplanets orbiting red dwarf stars, and learn about their environments, from the radio waves generated by auroras on those worlds. Source: https://earthsky.org/space/exoplanets-red-dwarfs-radio-waves-auroras…
How newborn stars prepare for the birth of planets
An international team of astronomers used two of the most powerful radio telescopes in the world to create more than three hundred images of planet-forming disks around very young stars in the Orion Clouds. These images reveal new details about the birthplaces of planets and the earliest stages of star formation. Source: https://phys.org/news/2020-02-newborn-stars-birth-planets.html…
Mysterious fast radio burst repeats in 16-day rhythm
For the first time, a fast radio burst has been found to be repeating, in a regular 16-day cycle. The baffling detection from the CHIME radio telescope deepens the mystery of these bizarre intergalactic objects. Source: https://earthsky.org/space/mysterious-fast-radio-burst-repeats-in-16-day-rhythm…