Oskar Klein Centre

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Albanova building
    The image to the left shows the off-axis jet (giving rise to a short duration gamma-ray burst - or SGRB). This scenario is ruled out. The image to the right shows a jet within GW170817 (narrow bright beam emanating from GW170817) that has dissipated its energy into the dynamical ejecta (shown in brown/yellow) and thus given rise to a wide-angle outflow (shown in red/pink) - a scenario called the choked-jet cocoon.​ This images is a schematic representation and not to scale. Image credit: NRAO/AUI/NSF: D. Berry​

    Update on Neutron Star Smash-Up: Jet Hit a Roadblock

    Light detected from a neutron star merger is not from a super-fast jet as previously suspected, but rather a bubble-like cocoon. Poonam Chandra, Guest Professor at the Department of Astronomy and the Oskar Klein Centre, contributes to this new study.

    Hiranya Peiris

    Oskar Klein Centre Director shares Breakthrough Prize

    The 3 million dollar prize for fundamental physics will be split by the 27-member WMAP team.

    Artist’s illustration of two merging neutron stars with gamma-ray beams and clouds of ejecta.

    Merging neutron stars detected in gravitation waves and electromagnetic radiation

    Gravitational waves from the merger of two neutron stars have been detected for the first time. Scientists around the world pinpointed the source to a galaxy 130 million light years away.

    OKC blog

    2017 Year in Review by Jesper Sollerman

    2017-12-19
    2017 was a very interesting year for transient astronomy, including OKC members contributions to papers on supernovae, the discovery of the gravitational wave signal from merging neutron stars, and the kickoff of the GREAT research environment.

    Interview with Erin O’Sullivan

    2017-12-06
    Erin O'Sullivan is a postdoc working on neutrino astrophysics in the SU IceCube group. She likes exploring Stockholm and playing board games.