Diffuse X-ray Emission within Wolf-Rayet Nebulae
Abstract
We discuss our most recent findings on the diffuse X-ray emission from Wolf-Rayet (WR) nebulae. The best-quality X-ray observations of these objects are those performed by XMM-Newton and Chandra towards S308, NGC2359, and NGC6888. Even though these three WR nebulae might have different formation scenarios, they all share similar characteristics: i) the main plasma temperatures of the X-ray-emitting gas is found to be =[1-2]10 K, ii) the diffuse X-ray emission is confined inside the [O III] shell, and iii) their X-ray luminosities and electron densities in the 0.3-2.0~keV energy range are 10-10~erg~s and 0.1-1~cm, respectively. These properties and the nebular-like abundances of the hot gas suggest mixing and/or thermal conduction is taking an important role reducing the temperature of the hot bubble.
Cite
@article{arxiv.1511.00861,
title = {Diffuse X-ray Emission within Wolf-Rayet Nebulae},
author = {J. A. Toalá and M. A. Guerrero and Y. -H. Chu and S. J. Arthur and R. A. Gruendl},
journal= {arXiv preprint arXiv:1511.00861},
year = {2015}
}
Comments
3 pages, 1 figure; International Workshop on Wolf-Rayet Stars