The Supermassive Black Hole in M84 Revisited

  title={The Supermassive Black Hole in M84 Revisited},
  author={Jonelle L. Walsh and Aaron J. Barth and Mark Lacy University of California and Irvine and University of Hertfordshire},
  journal={arXiv: Cosmology and Nongalactic Astrophysics},
The mass of the central black hole in the giant elliptical galaxy M84 has previously been measured by two groups using the same observations of emission-line gas with the Space Telescope Imaging Spectrograph (STIS) on the Hubble Space Telescope, giving strongly discrepant results: Bower et al. (1998) found M_BH = (1.5^{+1.1}_{-0.6}) x 10^9 M_sun, while Maciejewski & Binney (2001) estimated M_BH = 4 x 10^8 M_sun. In order to resolve this discrepancy, we have performed new measurements of the gas… Expand
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