The Chandra Survey of Extragalactic Sources in the 3CR Catalog: X-ray Emission from Nuclei, Jets, and Hotspots in the Chandra Archival Observations

TL;DR

This study re-analyzed 93 3CR extragalactic radio sources using Chandra X-ray data, identifying new X-ray features in jets, hotspots, and galaxy clusters, thereby enriching the understanding of their high-energy properties.

Contribution

It provides a uniform re-analysis of archival data, reporting new X-ray detections of jet knots, hotspots, and galaxy cluster emissions not previously documented.

Findings

Detected 2 new X-ray jet knots.

Identified 17 new hotspots in X-ray.

Discovered 15 galaxy clusters with extended X-ray emission.

Abstract

As part of our program to build a complete radio and X-ray database of all the 3CR extragalactic radio sources, we present an analysis of 93 sources for which Chandra archival data are available. Most of these sources have been already published. Here we provide a uniform re-analysis and present nuclear X-ray fluxes and X-ray emission associated with radio jet knots and hotspots using both publicly available radio images and new radio images that have been constructed from data available in the VLA archive. For about 1/3 of the sources in the selected sample a comparison between the Chandra and the radio observations was not reported in the literature: we find X-ray detections of 2 new radio jet knots and 17 hotspots. We also report the X-ray detection of extended emission from the intergalactic medium of 15 galaxy clusters, two of which were most likely unknown previously.