Sagittarius A*, a radio source at the centre of the Milky Way, harbours a strong candidate for a supermassive black hole. The source is thought to be powered by radiatively inefficient accretion of gas, with magnetic fields possibly helping the flow to occur. In most galaxies, the accretionrnflow cannot be resolved directly and accretion models lack information about the initial conditions of the flow. Etough et al. report the discovery of radio emission from a new pulsar that erupted as an X-ray source near Sgr A*, pointing to the presence of a dynamically important magnetic field near the black hole.
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机译：在银河系中心的射手座射手座A *拥有超大质量黑洞的强大候选者。认为该源是由辐射效率低下的气体积聚提供动力的，磁场可能有助于流动。在大多数星系中，吸积流无法直接解析，并且吸积模型缺少有关流初始条件的信息。 Etough等。报告发现了来自新脉冲星的无线电发射，该脉冲星是在Sgr A *附近作为X射线源爆发的，表明黑洞附近存在着重要的动态磁场。
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