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

    A cold dawn for the first stars

    This morning, as I was walking from Tekniska Högskolan metro station to AlbaNova through the Siberian cold which has hit Stockholm, I was thinking about even colder temperatures than the -15 C that I felt on my skin. Did you know that the temperature of Universe was only 3 Kelvin (-270 C) when the first … Continue reading A cold dawn for the first stars

    Interview with Giovanni Camelio

    Giovanni is a postdoc in the SU Astronomy department working on neutrino diffusion in rotating neutron stars. He likes reading and drawing.