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This is the fourth paper of our series of works studying winds from hotaccretion flows around black holes. In the first two papers, we have shown theexistence of strong winds in hot accretion flows using hydrodynamical andmagnetohydrodynamical (MHD) simulations. In the third paper, by using threedimensional general relativity MHD numerical simulation data of hot accretionflows and adopting a "virtual particle trajectory" data analysis approach, wehave calculated the properties of wind, such as its mass flux and velocity.However, that paper focuses only on a non-spinning black hole and SANE(standard and normal accretion). In the present paper, we extend the thirdpaper by including cases of a rapidly rotating black hole and MAD (magneticallyarrested disk). We focus on investigating the effect of spin and magnetic fieldon the properties of wind and jet. It is found that a larger spin and strongermagnetic field usually enhance the wind and jet. The formulae describing themass flux, poloidal velocity, and fluxes of momentum, kinetic energy, and totalenergy of wind and jet are presented. One interesting finding, among others, isthat even in the case of very rapidly spinning black hole where the jet issupposed to be the strongest, the momentum flux of jet is smaller than that ofwind, while the total energy flux of jet is larger than that of wind by at mosta factor of 10. This result suggests that wind potentially plays a moreimportant role than jet at least for some problems in active galactic nucleifeedback.

astrophysical journal/the astrophysical journal

Numerical simulation of hot accretion flows (IV): effects of black hole  spin and magnetic field strength on the wind and the comparison between wind  and jet properties