1 research outputs found
Spherical Accretion in Nearby Weakly Active Galaxies
We consider the sample of weakly active galaxies situated in 'Local Universe'
collected in the paper of Pellegrini (2005) with inferred accretion
efficiencies from to .
We apply a model of spherically symmetrical Bondi accretion for given
parameters (,,,) taken from observation. We
calculate spectra emitted by the gas accreting onto its central objects using
Monte Carlo method including synchrotron and bremsstrahlung photons as seed
photons. We compare our results with observed nuclear X-ray luminosities
(0.3-10 keV) of the sample. Model is also tested for different
external medium parameters ( and ) and different
free parameters of the model. Our model is able to explain most of the observed
nuclear luminosities under an assumption that half of the compresion
energy is transfered directly to the electrons.Comment: 19 pages, 11 figures, accepted to A&