A 300-parsec-long jet-inflated bubble around a powerful microquasar in the galaxy NGC 7793

Manfred W. Pakull (), Roberto Soria () and Christian Motch
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Manfred W. Pakull: University of Strasbourg, CNRS UMR 7550, Observatoire Astronomique, 11 rue de l’Université, F67000 Strasbourg, France
Roberto Soria: MSSL, University College London
Christian Motch: University of Strasbourg, CNRS UMR 7550, Observatoire Astronomique, 11 rue de l’Université, F67000 Strasbourg, France

Nature, 2010, vol. 466, issue 7303, 209-212

Abstract: The power behind nebula S26 The spiral galaxy NGC 7793 contains a huge radio and optical nebula, named S26. Ultraluminous X-ray sources of this class are the most luminous type of stellar-mass black holes, often associated with shock-ionized nebulae, generally with no evidence of collimated jets. Based on observations from the Chandra X-ray telescope, together with optical and radio data, Pakull et al. show that the S26 nebula is powered by a collimated pair of jets originating from the central black hole. Bright X-ray hot spots and radio lobes mark the extremities of the jets, which are surrounded by a 300-parsec-long bubble of plasma. These jets are the most powerful known so far in non-nuclear black holes, and their properties show that some black holes may channel most of their accretion power into mechanical energy rather than radiation.

Date: 2010
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DOI: 10.1038/nature09168

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