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    Cosmic X-rays may provide clues to the Nature of Dark Matter

    February 9, 2018, Categories  Astronomy/Space

    This is an X-ray image of the Perseus galaxy cluster, approximately 240 million light-years away from Earth. The x-ray radiation emitted by galaxies and galaxy clusters still poses numerous puzzles to astrophysicists. In particular, it may provide clues to the nature of the mysterious dark matter. Credit: NASA

    This is an X-ray image of the Perseus galaxy cluster, approximately 240 million light-years away from Earth. The x-ray radiation emitted by galaxies and galaxy clusters still poses numerous puzzles to astrophysicists. In particular, it may provide clues to the nature of the mysterious dark matter. Credit: NASA

    Physicists propose a new theory of dark matter based on the detection of unusual x-ray radiation from galaxies. It implies that dark matter particles may be very different from what is normally assumed. In particular, their theory involves dark matter particles which are extremely light – almost 100X lighter than electrons, in stark contrast to many conventional models that involve very heavy dark matter particles instead.

    According to common theory, dark matter must exist because ot...

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    Mysterious Behavior of Quantum Liquid Elucidated, a World 1st

    January 25, 2016, Categories  Physics

    Left: In a single particle system, the behavior of the particle is well understood by solving the Schrödinger equation. Here the particle possesses wave nature characterized by the de Broglie wave length. Right: In a many particle system, on the other hand, the particles interact each other in a quantum mechanical way and behave as if they are "liquid". This is called quantum liquid whose properties are very different from that of the single particle case. Credit: Image courtesy of Osaka University

    Left: In a single particle system, the behavior of the particle is well understood by solving the Schrödinger equation. Here the particle possesses wave nature characterized by the de Broglie wave length. Right: In a many particle system, on the other hand, the particles interact each other in a quantum mechanical way and behave as if they are “liquid”. This is called quantum liquid whose properties are very different from that of the single particle case. Credit: Image courtesy of Osaka University

    Researchers, through precise measurement of current fluctuations in quantum liquids in an artificial atom created by nanotechnology, succeeded in elucidating theoretically-predicted behavior of quantum liquid in a non-equilibrium regime...

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