NEW EVIDENCE FOR HIGH ACTIVITY OF THE SUPERMASSIVE BLACK HOLE IN OUR GALAXY

@article{Nobukawa2011NEWEF,
  title={NEW EVIDENCE FOR HIGH ACTIVITY OF THE SUPERMASSIVE BLACK HOLE IN OUR GALAXY},
  author={M. Nobukawa and S. G. Ryu and T. Tsuru and K. Koyama},
  journal={The Astrophysical Journal},
  year={2011},
  volume={739}
}
  • M. Nobukawa, S. G. Ryu, +1 author K. Koyama
  • Published 2011
  • Physics
  • The Astrophysical Journal
  • Prominent K-shell emission lines of neutral iron (hereafter Fe I-K lines) and hard-continuum X-rays from molecular clouds (MCs) in the Sagittarius B (Sgr B) region were found in two separate Suzaku observations in 2005 and 2009. The X-ray flux of the Fe I-K lines decreased in correlation with the hard-continuum flux by a factor of 0.4-0.5 in four years, which is almost equal to the light traveling across the MCs. The rapid and correlated time variability, the equivalent width of the Fe I-K… CONTINUE READING
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