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    M82 tagged posts

    How Cosmic Winds Transform Galactic Environments

    April 4, 2023, Categories  Astronomy/Space

    A composite closeup of the bright center of spiral galaxy NGC 253.
    A composite closeup of the bright center of spiral galaxy NGC 253.

    Researchers model how elements move across star-forming regions. Much like how wind plays a key role in life on Earth by sweeping seeds, pollen and more from one place to another, galactic winds — high-powered streams of charged particles and gases — can change the chemical makeup of the host galaxies they form in, simply by blowing in a specific direction.

    Using observations made by NASA’s Chandra X-ray Observatory, a new study details how these energetic winds, once released from the center of a galaxy, directly influence the temperature and metal distribution of the rest of the region.

    “Galactic winds are a large part of galaxy evolution in general,” said Sebastian Lopez, lead author of the study and a graduate...

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    Expanding Light Echo Spotted around Supernova

    November 10, 2017, Categories  Astronomy/Space

    Light from a supernova explosion in the nearby starburst galaxy M82 is reverberating off a huge dust cloud in interstellar space. The supernova, called SN 2014J, occurred at the upper right of M82, and is marked by an "X." The supernova was discovered on Jan. 21, 2014. The inset images at top reveal an expanding shell of light from the stellar explosion sweeping through interstellar space, called a "light echo." The images were taken 10 months to nearly two years after the violent event (Nov. 6, 2014 to Oct. 12, 2016). The light is bouncing off a giant dust cloud that extends 300 to 1,600 light-years from the supernova and is being reflected toward Earth. SN 2014J is classified as a Type Ia supernova and is the closest such blast in at least four decades. A Type Ia supernova occurs in a binary star system consisting of a burned-out white dwarf and a companion star. The white dwarf explodes after the companion dumps too much material onto it. Credit: NASA, ESA, and Y. Yang (Texas A&M University and Weizmann Institute of Science); Acknowledgment: M. Mountain (AURA) and The Hubble Heritage Team (STScI/AURA)

    Light from a supernova explosion in the nearby starburst galaxy M82 is reverberating off a huge dust cloud in interstellar space. The supernova, called SN 2014J, occurred at the upper right of M82, and is marked by an “X.” The supernova was discovered on Jan. 21, 2014. The inset images at top reveal an expanding shell of light from the stellar explosion sweeping through interstellar space, called a “light echo.” The images were taken 10 months to nearly two years after the violent event (Nov. 6, 2014 to Oct. 12, 2016). The light is bouncing off a giant dust cloud that extends 300 to 1,600 light-years from the supernova and is being reflected toward Earth. SN 2014J is classified as a Type Ia supernova and is the closest such blast in at least four decades...

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