Abstract
Direct photometric evidence has established that the central bulge of our Galaxy (the Milky Way) is actually a stellar bar. The dynamics of the bar will drive material into the Galaxy's centre but recent X-ray observations suggest that much of the inflowing gas is driven out again in a high-pressure galactic wind. A small portion of the remainder appears to be falling onto an extraordinarily dense cluster of stars at the Galaxy's nucleus, which may contain a massive black hole.
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Blitz, L., Binney, J., Lo, K. et al. The centre of the Milky Way. Nature 361, 417–424 (1993). https://doi.org/10.1038/361417a0
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DOI: https://doi.org/10.1038/361417a0
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