New findings on the X-ray emission from Wolf-Rayet nebulae

We present the most recent results of XMM-Newton and Chandra observations on the only four Wolf-Rayet (WR) nebulae observed to date. Given the limited number of observations and the different morphological and spectral characteristics of these nebulae, it has been difficult to understand the physics behind the plasma emission. Numerical and analytical models can not explain the 'soft' nature and low plasma temperatures (T~106 K) presented by WR nebulae. However, there seem to be a correlation between the spectral type of the central star and the existence of diffuse hot gas.

27/03/2014 - 13:30
Jesús A. Toalá