Disk-Jet connection in outbursting Black Hole sources

TL;DR

This study investigates the connection between accretion disk behavior and jet ejections in outbursting black hole systems, revealing that spectral softening and disappearance of QPOs coincide with radio flares, supporting the TCAF model with magnetic fields.

Contribution

It provides observational evidence linking spectral and timing changes to jet ejections in black hole sources, interpreted through the TCAF model with magnetic fields.

Findings

QPO frequencies disappear during jet ejections

Disk (thermal) emission increases during ejections

Spectral softening occurs at jet ejection times

Abstract

We explored the `spectro - temporal' behaviour of outbursting Black Hole sources in X-rays, at the time of jet ejections which are observed as radio flares. The energy dependent evolution of the properties of all the sources studied, shows that during the ejections the QPO frequencies `disappear' as well as the disk (thermal) emission increases, implying the soft nature of the spectrum. These results can be understood based on the TCAF model (Chakrabarti & Titarchuk 1995), in the presence of magnetic field.