http://arxiv.org/abs/2002.11778
The Fundamental Plane (FP) of Black Hole (BH) Activity in galactic nuclei relates X-ray and radio luminosities to BH mass and accretion rate. However, there is a large scatter exhibited by the data, which motivated us for a new variable. We add BH spin as a new variable and estimate the spin dependence of the jet power and disk luminosity in terms of radio and X-ray luminosities. We assume the Blandford-Znajek process as the main source of the outflow, and find that the jet power depends on BH spin stronger than quadratically at moderate and large spin values. We perform a statistical analysis for 10 AGNs which have sub-Eddington accretion rates and whose spin values are measured independently, and find that the spin-dependent relation describes the data significantly better. This analysis shows not only the spin dependence of the FP relation, but also implies the Blandford-Znajek process in AGN jets.
C. Unal and A. Loeb
Fri, 28 Feb 20
3/49
Comments: 13 pages, 3 figures, 1 table
You must be logged in to post a comment.