Non-thermal radiation from a runaway massive star
Abstract
We present a study of the radio emission from a massive runaway star. The star forms a bow shock that is clearly observed in the infrared. We have performed VLA observations under the assumption that the reverse shock in the stellar wind might accelerate charged particles up to relativistic energies. Non-thermal radio emission of synchrotron origin has been detected, confirming the hypothesis. We have then modeled the system and we predict a spectral energy distribution that extends up to gamma-rays. Under some simplifying assumptions, we find that the intensity at high energies is too low to be detected by current instruments, but the future Cherenkov Telescope Array might detect the source.
Cite
@article{arxiv.1011.2773,
title = {Non-thermal radiation from a runaway massive star},
author = {Gustavo E. Romero and Paula Benaglia and Cintia S. Peri and Josep Marti and Anabella T. Araudo},
journal= {arXiv preprint arXiv:1011.2773},
year = {2010}
}
Comments
Accepted for publication in the proceedings of the conference "The multi-wavelength view of Hot, Massive Stars", held in Liege, July 12-16 2010