A Global Energetic Model for Microquasars (GEMM): A rich and consistent disk+jet solution

TL;DR

This paper introduces a comprehensive model for microquasars that combines a new jet-emitting disk solution with jet dynamics, capable of reproducing observed spectral features and providing insights into disk-jet interactions.

Contribution

The paper presents a novel disk solution called Jet Emitting Disk (JED) integrated with jet launching physics, offering a self-consistent disk+jet model for microquasars.

Findings

Reproduces the spectral energy distribution of XTE J1118+480.

Identifies three thermally stable solutions: hot, cold, and unstable.

Demonstrates the model's ability to match observed microquasar characteristics.

Abstract

Based on a dynamical model describing how stationary, powerful and self-collimated jets are being launched from a magnetized disk, we build a consistent disk+jet microquasar picture. Our disk is a new type of disk solution called the Jet Emitting Disk (JED), and whose characteristics are directly constrained by the presence of a jet. We assume a one-temperature plasma with thermal particles only. By solving the radiative equilibrium of the disk, we obtain three branches of solutions, a hot and a cold ones (both thermally stable), and an intermediate one, thermally unstable. The hot solution possess the global observed characteristics of what has been often called a "corona" located above the inner disk region. We present this new disk solution, and how the radiative equilibrium is computed. We discuss the richness of the solution, and show the ability of the model to reproduce an observed spectral energy distribution of XTE J1118+480 with reasonable parameters. We finally outline some perspectives of the model.