Ups and downs in the X-ray emission of the colliding wind binaries HD 168112 and HD 167971

Gregor Rauw, Ronny Blomme, Yael Naze +2

The long-period O-star binary system HD 168112 and the triple O-star system HD 167971 are well-known sources of non-thermal radio emission that arises from a colliding wind interac…