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    Five-hundred-meter Aperture Spherical radio Telescope (FAST) tagged posts

    Astronomers Shed New Light on Formation of Mysterious Fast Radio Bursts

    July 31, 2023, Categories  Astronomy/Space

    China's FAST radio telescope

    More than 15 years after the discovery of fast radio bursts (FRBs)—millisecond-long, deep-space cosmic explosions of electromagnetic radiation—astronomers worldwide have been combing the universe to uncover clues about how and why they form.

    Nearly all FRBs identified have originated in deep space outside our Milky Way galaxy. That is until April 2020, when the first Galactic FRB, named FRB 20200428, was detected. This FRB was produced by a magnetar (SGR J1935+2154), a dense, city-sized neutron star with an incredibly powerful magnetic field.

    This groundbreaking discovery led some to believe that FRBs identified at cosmological distances outside our galaxy may also be produced by magnetars...

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    Plasma Lensing discovered in Black Widow Pulsar

    December 31, 2021, Categories  Astronomy/Space

    The upper panel shows the total intensity of pulse emission vs. pulsar spin and orbital phase
    s with the sub-integration of 1 s of PSR J1720-0533. Enlargements of the ingress and egress of the pulsar are shown in the middle left and middle right panels, respectively. The bottom panels show the pulse flux density variations near the eclipse. (Image by XAO)

    Using the Five-hundred-meter Aperture Spherical radio Telescope (FAST), a research team led by Dr. Wang Shuangqiang from the Xinjiang Astronomical Observatory (XAO) of the Chinese Academy of Sciences discovered plasma lensing phenomenon in a black widow pulsar PSR J1720-0533.

    Black widow pulsar systems have a low-mass companion star in a compact orbit with a millisecond pulsar...

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