No Clear Correlation between X-ray Spectral Properties and Polarization for High Synchrotron Peaked Blazars

TL;DR

This study analyzes X-ray spectropolarimetric data of high synchrotron peaked blazars, finding no significant correlation between their spectral and polarization properties, and highlighting variability in magnetic field uniformity.

Contribution

It provides the first comprehensive analysis showing no correlation between X-ray spectral and polarization properties in high synchrotron peaked blazars.

Findings

No significant correlation between X-ray spectral and polarimetric properties.

X-ray polarization varies significantly between different blazars and observations.

Magnetic field uniformity in X-ray emitting regions is highly variable.

Abstract

IXPE has enabled the X-ray polarizations of many blazars to be measured. We analyze X-ray spectropolarimetric data for all high synchrotron peaked blazars observations published by the IXPE team. We find that there are no statistically significant correlations between the X-ray polarimetric properties of the blazars and their X-ray spectral properties. This implies that there is no connection between the energy distribution of the X-ray emitting electrons and the uniformity of the magnetic field in the X-ray emitting regions of these blazars. We also find that the X-ray polarizations vary significantly between blazars and observations of the same blazar, implying the level of uniformity of the magnetic field in the X-ray emitting region is highly variable. This result will inform future theoretical work and potentially help narrow down the acceleration process of the synchrotron electrons.