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    mysterious circular ring points to intergalactic origin - Forum

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    Forum moderator: arya, dethalternate  
    Forum » Main » Science, Astronomy, Nature » mysterious circular ring points to intergalactic origin
    mysterious circular ring points to intergalactic origin
    ManuDate: Friday, 01-April-2022, 4:33 PM | Message # 1
    --dragon lord--
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    Discovery of mysterious circular ring points to intergalactic origin

    by Western Sydney University

    Western Sydney University researchers, together with an international team of experts, have discovered a mysterious circular ring near our neighboring galaxy that could be the first known case of an intergalactic supernova remnant—remains of an exploded star that could be up to 7,000 years old.

    Dubbed a "rogue" supernova remnant by the researchers and named J0624–6948, it is most likely located in the Large Magellanic Cloud (LMC)—a satellite galaxy of the Milky Way—and its position suggests a previously unobserved origin.

    Published in the Monthly Notices of the Royal Astronomical Society, lead author Professor Miroslav Filipovic from the University's School of Science said the discovery was exciting and raised many unanswered questions.

    "When we originally discovered this almost perfectly circular radio object we thought it was yet another ORC (odd radio circle) but after our additional observations, it became clear that this object is much more likely to be something else," said Professor Filipovic.

    The ring discovered has significant differences to the five other known ORCs—a flatter radio spectral index, lack of a prominent central galaxy as a possible host, and larger apparent size—that all suggest it may be a different type of object.

    "The most plausible explanation is that the object is an intergalactic supernova remnant due to an exploded star that resided in the Large Magellanic Cloud outskirts that had undergone a single-degenerate type Ia supernova which involves the explosion of two stars orbiting each other," said Professor Filipovic.

    untotenawake
    Read more/full article/source -
    https://phys.org/news....ic.html
     
    Forum » Main » Science, Astronomy, Nature » mysterious circular ring points to intergalactic origin
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