X-raying the wind-wind collisions in HD 168112 and HD 167971
Abstract
The O-type long-period binary HD 168112 and triple HD 167971 star systems have been known for several decades for their non-thermal synchrotron radio emission. This emission arises from relativistic electrons accelerated in the hydrodynamic shocks of the wind collisions in these systems. Such wind collisions are expected to produce a strong X-ray emission that varies as a function of orbital phase. In wide eccentric binaries, such as our targets, the X-ray emission arises from an adiabatic plasma and its intensity should scale as the inverse of the orbital separation. We present a set of XMM-Newton observations of these systems which help us gain insight into the properties of their wind interactions.
Keywords
Cite
@article{arxiv.2410.14458,
title = {X-raying the wind-wind collisions in HD 168112 and HD 167971},
author = {Gregor Rauw and Ronny Blomme and Yaël Nazé and Delia Volpi},
journal= {arXiv preprint arXiv:2410.14458},
year = {2024}
}
Comments
in French language. Accepted for publication in the Bulletin de la Soci\'et\'e Royale des Sciences de Li\`ege, Proceedings of the 41st Li\`ege Astrophysical Colloquium, held in Li\`ege 15-19 July 2024, edited by Y. Naz\'e, & E. Bozzo