Quasinormal modes and Hawking radiation of a Reissner-Nordstr\"om black
  hole surrounded by quintessence
  We investigate quasinormal modes (QNMs) and Hawking radiation of a
Reissner-Nordstr\"om black hole sur-rounded by quintessence. The
Wentzel-Kramers-Brillouin (WKB) method is used to evaluate the QNMs and the
rate of radiation. The results show that due to the interaction of the
quintessence with the background metric, the QNMs of the black hole damp more
slowly when increasing the density of quintessence and the black hole radiates
at slower rate.
