Radiation Properties of the Accretion Disk around a Black Hole Surrounded by PFDM

The thermal radiation properties of the accretion disk around a non-rotating black hole with perfect fluid dark matter (PFDM) environment are investigated. A surrounded by together classical geometrically thin but optically thick Novikov–Thorne is selected as system to be analyzed. It observed that strengthens gravitational field, which leads both increase radii event horizon and innermost stable circular orbit (ISCO). However, for flux radiant energy over disk, maximum reduced shifted outwards central object under influence matter. dependence profile on radial coordinate intensity shows analogous behavior. has been demonstrated radiative efficiency increased from ∼6% up ∼20% in surrounding spectra also explored, towards lower frequencies (corresponding redshift electromagnetic coming disk)