Oskar Klein Centre

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Albanova building
    By User:Rursus (R. J. Hall) [GFDL (http://www.gnu.org/copyleft/fdl.html), CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0/) or CC BY 2.5 (https://creativecommons.org/licenses/by/2.5)], via Wikimedia Commons

    Massive star explodes in metal-poor galaxy

    This week's issue of Nature Astronomy tells the story of a massive and metal-poor star that exploded as a supernova. It is located in a distant faint galaxy and the authors suggest that it is the low metal content of the host galaxy that allows such a massive star to explode.

    Sara Strandberg

    Sara Strandberg Wins the Göran Gustafsson Prize

    The prize is given to Dr. Strandberg for her research in experimental particle physics and and its potential connection to dark matter.

    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.

    OKC blog

    Interview with Ankit Beniwal

    Ankit is a postdoc in the SU Physics department working on dark matter phenomenology. He likes Indian food and is learning how to swim.

    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