A Serendipitous Hard X-ray Detection of the Blazar LBQS 1319+0039

TL;DR

This paper reports a serendipitous detection of hard X-ray emission from the blazar LBQS 1319+0039, providing insights into its spectral properties and luminosity without evidence of variability.

Contribution

First detection of hard X-ray emission from LBQS 1319+0039, characterizing its spectrum and luminosity with no observed variability.

Findings

X-ray spectrum fits a powerlaw with photon index 1.78

Observed 2-10 keV luminosity is 3.4×10^45 erg/s

No evidence of strong variability over time

Abstract

We report a serendipitous hard X-ray (3-24 keV) detection of the blazar LBQS 1319+0039. The X-ray spectrum is consistent with powerlaw emission with a photon index of $\Gamma = 1.78$. The observed emission and published redshift imply an observed 2-10 keV luminosity of $3.4\times10^{45}$ erg s$^{-1}$. This is consistent with extrapolations from a previous soft X-ray detection, thus there is no evidence for strong variability.