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    Sagittarius Dwarf tagged posts

    Gamma rays from Neighboring Galaxy related to Millisecond Pulsars

    September 7, 2022, Categories  Astronomy/Space

    Sagittarius Dwarf
    A small satellite galaxy of the Milky Way – called the Sagittarius dwarf galaxy – has been observed from Earth through giant lobes of gamma radiation (the so-called Fermi bubbles). Although the dwarf galaxy is stuffed with dark matter, this is unlikely to be the cause of the observed emission. Image: O. Macias.

    A team of researchers, including UvA physicists and astronomers, has studied gamma rays caused by the Sagittarius Dwarf, a small neighbouring galaxy of our Milky Way. They showed that all the observed gamma radiation can be explained by millisecond pulsars, and can therefore not be interpreted as a smoking gun signature for the presence of dark matter. The results were published in Nature Astronomy this week.

    The center of our galaxy is blowing a pair of colossal bubbles ...

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