Jet collision with accreting tori around SMBHs. GRHD and light surfaces constraints in aggregates of misaligned tori

TL;DR

This paper investigates the dynamics and constraints of jet collisions with accreting tori around SMBHs using GRHD models, focusing on light surface constraints, stability, and the role of pressure and magnetic fields in jet formation.

Contribution

It introduces a detailed analysis of misaligned tori aggregates around SMBHs, incorporating light surface constraints and magnetic effects, advancing understanding of jet-torus interactions.

Findings

Constraints on torus formation and jet collision conditions.

Identification of orbit-replicas and shadowing effects.

Role of pressure gradients and magnetic fields in jet collimation.

Abstract

We explore the possibility of jet collisions with accreting tori orbiting around SMBHs. The analysis provides constraints on formation and the observational evidences of the host configurations. We use a GRHD model, investigating the light surfaces contraints in aggregates of misaligned tori orbiting a central static Schwarzschild black hole. Each (toroidal) configuration of the agglomeration is a geometrically thick, pressure supported, perfect fluid torus. Aggregates include proto-jets, the open cusped solutions associated to the geometrically thick tori. Collision emergence and the stability properties of the aggregates are considered at different inclination angles relative to a fixed distant observer. We relate the constraints to the relevant frequencies of the configurations and fluid specific angular momentum, separating the constraints related to the fluids hydrodynamics and to the geometric backgrounds. We analyze existence of accreting tori supporting jet-emission. We discuss the existence of orbit-replicas that could host shadowing effects in replicas of the emissions in two regions, close and far from the BH (horizon replicas in jet shells). The investigation clarifies the role of the pressure gradients of the orbiting matter and the essential role of the radial gradient of the pressure in the determination of the disk verticality. Finally we analyze the possibility that a toroidal magnetic field could be related to the collimation of proto-jets.