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    NASA Missions Team Up to Study Unique Magnetar Outburst - Forum

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    Forum » Main » Science, Astronomy, Nature » NASA Missions Team Up to Study Unique Magnetar Outburst (video)
    NASA Missions Team Up to Study Unique Magnetar Outburst
    ManuDate: Saturday, 14-November-2020, 11:14 AM | Message # 1
    --dragon lord--
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    On April 28, a supermagnetized stellar remnant known as a magnetar blasted out a simultaneous mix of X-ray and radio signals never observed before. The flare-up included the first fast radio burst (FRB) ever seen from within our Milky Way galaxy and shows that magnetars can produce these mysterious and powerful radio blasts previously only seen in other galaxies.

    A magnetar is a type of isolated neutron star, the crushed, city-size remains of a star many times more massive than our Sun. What makes a magnetar so special is its intense magnetic field. The field can be 10 trillion times stronger than a refrigerator magnet's and up to a thousand times stronger than a typical neutron star's. This represents an enormous storehouse of energy that astronomers suspect powers magnetar outbursts.

    The X-ray portion of the synchronous bursts was detected by several satellites, including NASA's Wind mission.

    The radio component was discovered by the Canadian Hydrogen Intensity Mapping Experiment (CHIME), a radio telescope located at Dominion Radio Astrophysical Observatory in British Columbia and led by several Canadian universities. It was also detected by the NASA-funded Survey for Transient Astronomical Radio Emission 2 (STARE2), a trio of detectors in California and Utah operated by Caltech and NASA’s Jet Propulsion Laboratory in Pasadena, California. The STARE2 data showed that the burst's energy was comparable to FRBs.

    By the time these bursts occurred, astronomers had already been monitoring their source, a magnetar named SGR 1935+2154, for more than half a day using NASA's Neil Gehrels Swift Observatory, Fermi Gamma-ray Space Telescope, and the NICER X-ray telescope mounted atop the International Space Station.

    About 13 hours later, when the magnetar was out of view for Swift, Fermi and NICER, a special X-ray burst erupted. The blast was seen by the European Space Agency’s INTEGRAL mission, the China National Space Administration’s Huiyan X-ray satellite, and the Russian Konus instrument on Wind. As the half-second-long X-ray burst flared, CHIME and STARE2 detected the radio burst, which lasted only a thousandth of a second.

    Taken together, the observations strongly suggest that the magnetar produced the Milky Way galaxy's equivalent of an FRB, which means magnetars in other galaxies likely produce at least some of these signals.

    Music: "Jupiter's Eye" from Universal Production Music

    Video credit: NASA's Goddard Space Flight Center
    Scott Wiessinger (USRA): Producer
    Chris Smith (USRA): Producer
    Chris Smith (USRA): Lead Animator
    Francis Reddy (University of Maryland College Park): Lead Science Writer
    Scott Wiessinger (USRA): Narrator
    Scott Wiessinger (USRA): Editor
    Scott Wiessinger (USRA): Animator
    Zaven Arzoumanian (NASA/GSFC): Scientist

    This video is public domain and along with other supporting visualizations can be downloaded from NASA Goddard's Scientific Visualization Studio at: https://svs.gsfc.nasa.gov/13751
     
    Forum » Main » Science, Astronomy, Nature » NASA Missions Team Up to Study Unique Magnetar Outburst (video)
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