Radio and X-ray observations of Five TeV SNRs

TL;DR

This paper summarizes radio and X-ray observations of five TeV supernova remnants, focusing on measuring their distances and studying non-thermal emissions to understand their physical properties and gamma-ray acceleration mechanisms.

Contribution

It provides updated kinematic distances for five TeV SNRs and analyzes non-thermal X-ray emissions, offering insights into their physical characteristics and gamma-ray acceleration processes.

Findings

Distances to five TeV SNRs are precisely measured.

Non-thermal X-ray emissions are detected in two old SNRs.

Results help constrain physical properties and acceleration mechanisms.

Abstract

We briefly summarize recent results of five TeV SNRs from radio and X-ray observations. We focus on remeasuring kinematic distances of 5 TeV SNRs, i.e. HESS J1732-347/SNR G353.6-0.7 (3.2 kpc), HESS J1834-087/G23.3-0.3 (also W41, 4.0 kpc), HESS J1833-105/G21.5-0.9 (4.8 kpc), HESS J1846-029/G29.7-0.3 (Kes 75, 6.3 kpc) and TeV SNR G54.1-0.3 (6.5 kpc), and studying non-thermal X-ray emissions from two old SNRs (G353.6-0.7 and W41). These not only allow constraining the TeV SNR basic physical properties, but also help reveal acceleration mechanisms of TeV Gamma-rays in the SNRs which are either related with the SNRs or the pulsar wind nebulae.