Oskar Klein Centre

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    A diagram that shows the expanding shell of material around an exploding star

    Light echo observations shed light on rare supernovae

    An international team led by OKC researcher Dr. Ragnhild Lunnan uses light echoes from a brilliant stellar explosion to reconstruct its history.

    Three panels that show the spiral galaxy before, during, and after the supernova went off near it.

    Wimpy supernova may signal the birth of a double neutron star system

    The star that died in the supernova likely left behind a binary neutron star system. These dense stellar remnants will ultimately merge with each other, giving off gravitational and electromagnetic waves.

    Prof. Hiranya Peiris. Photo: Serena Nobili /Oskar Klein Centre

    Wallenberg Project Grant to OKC Director Hiranya Peiris

    The Knut and Alice Wallenberg Foundation have awarded a project grant of 37.8 million crowns over five years to OKC Director Hiranya Peiris for the project Understanding the Dynamic Universe

    extra dimension

    The Blog

    Hunting for extra dimensions with gravitational waves

    One would then think that extra dimensions beyond the usual 3+1 spacetime ones, an exciting and common ingredient in many science fiction stories, should be indeed left to science fiction novelists. It turns out, however, that extra dimensions are not at all uncommon in actual physics theories.