Thermodynamics, geodesics and gravitational weak lensing of kiselev black holes surrounded by hernquist dark matter halos

In this study, we explore the thermodynamics, massless-particle motion, photon sphere, shadow, and gravitational weak lensing of Schwarzschild BHs embedded in a Hernquist dark matter halo, surrounded by a quintessential field. The spacetime metric is constructed using a modified lapse function incorporating the Schwarzschild term, the Hernquist density profile parameterized by ρ s and r s , and the quintessential contribution with equation of state parameter ω q . We derive the Hawking temperatu