Calibrating the power of relativistic jets

TL;DR

This paper discusses the challenge of accurately measuring the power of relativistic jets in AGN and XRB, proposing a calibration method to reconcile different estimation techniques and improve measurement reliability.

Contribution

It introduces a calibration approach for jet power estimates in AGN and XRB, using data comparison from the 4FGL catalog to identify sources of discrepancy.

Findings

Preliminary calibration results for AGN jet power estimates.

Identification of sources of variation in power measurement methods.

Early insights into converging different jet power estimation techniques.

Abstract

There are several methods to calculate the radiative and kinetic power of relativistic jets, but their results can differ by one or two orders of magnitude. Therefore, it is necessary to perform a calibration of the jet power, to understand the reasons for these differences (whether wrong hypotheses or intrinsic source variability), and if it is possible to converge to a reliable measurement of this physical quantity. We present preliminary results of a project aimed at calibrating the power of relativistic jets in active galactic nuclei (AGN) and X-ray binaries (XRB). We started by selecting all the AGN associations with known redshift in the Fourth Fermi LAT Gamma-Ray Catalog (4FGL). We then calculated the radiative and/or kinetic powers from available data or we extracted this information from literature. We compare the values obtained for overlapping samples and highlight early conclusions.