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  1. No Access

    Article

    X-ray polarization evidence for a 200-year-old flare of Sgr A*

    The centre of the Milky Way Galaxy hosts a black hole with a solar mass of about 4 million (Sagittarius A* (Sgr A)) that is very quiescent at present with a luminosity many orders of magnitude below those of acti...

    Frédéric Marin, Eugene Churazov, Ildar Khabibullin, Riccardo Ferrazzoli… in Nature (2023)

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    Article

    Vela pulsar wind nebula X-rays are polarized to near the synchrotron limit

    Pulsar wind nebulae are formed when outflows of relativistic electrons and positrons hit the surrounding supernova remnant or interstellar medium at a shock front. The Vela pulsar wind nebula is powered by a y...

    Fei **e, Alessandro Di Marco, Fabio La Monaca, Kuan Liu, Fabio Muleri… in Nature (2022)

  3. Article

    Open Access

    Polarized blazar X-rays imply particle acceleration in shocks

    Most of the light from blazars, active galactic nuclei with jets of magnetized plasma that point nearly along the line of sight, is produced by high-energy particles, up to around 1 TeV. Although the jets are ...

    Ioannis Liodakis, Alan P. Marscher, Iván Agudo, Andrei V. Berdyugin… in Nature (2022)

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