Supplementary Materials

A fast and long-lived outflow from the supermassive black hole in NGC 5548

J. S. Kaastra,* G. A. Kriss, M. Cappi, M. Mehdipour, P.-O. Petrucci, K. C. Steenbrugge, N. Arav, E. Behar, S. Bianchi, R. Boissay, G. Branduardi-Raymont, C. Chamberlain, E. Costantini, J. C. Ely, J. Ebrero, L. Di Gesu, F. A. Harrison, S. Kaspi, J. Malzac, B. De Marco, G. Matt, K. Nandra, S. Paltani, R. Person, B. M. Peterson, C. Pinto, G. Ponti, F. Pozo Nuñez, A. De Rosa, H. Seta, F. Ursini, C. P. de Vries, D. J. Walton, M. Whewell

Materials/Methods, Supporting Text, Tables, Figures, and/or References

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  • Materials and Methods
  • Figs. S1 to S4
  • Tables S1 to S3
  • References

Images, Video, and Other Other Media

Movie S1
An animated journey through the active galaxy NGC 5548.
At its center is a supermassive black hole that is 40 million times heavier than our Sun,
all concentrated in a region smaller than the Earth’s orbit around the Sun. Gas swirls
around this black hole and is sucked into it, heating up its surroundings and producing
strong energetic X-ray radiation. This X-ray hot corona is fuelled through a rapidly
rotating accretion disk. The disk also produces strong patchy winds of warm gas that is
thrown out into space. It contains denser parts that may obscure the X-rays emitted in the
direction towards the Earth, shown by the green line. Further outwards we see the winds
produced by the outer parts of the rotating disk, where the so-called broad line clouds are.
At light years away from the black hole the warm winds also absorb some of the X-ray
and ultraviolet light from the nucleus. These winds can cool down when the obscuring
inner clouds block the light from the nucleus. The power emitted by the nucleus is so
strong that it affects major parts of the host galaxy. The galaxy has a size of hundred
thousand light years and is at a distance of 240 million light years away from us.