GRS 1758-258: the first winged microquasar

TL;DR

This paper reports the discovery of winged structures in the microquasar GRS 1758-258, strengthening the analogy between microquasars and radio galaxies and suggesting implications for black hole mergers and gravitational waves.

Contribution

It presents the first detection of winged features in a Galactic microquasar, expanding understanding of outflow phenomena and their relation to larger-scale radio galaxies.

Findings

Detection of winged structures in GRS 1758-258

Strengthens the analogy between microquasars and radio galaxies

Implications for black hole merger scenarios and gravitational waves

Abstract

The family links between radio galaxies and microquasars have been strongly strengthened thanks to a new common phenomenon: the presence of extended winged features. The first detection of such structures in a Galactic microquasar, recently reported in Nature Communications (http://rdcu.be/zgX8), widens the already known analogy between both kinds of outflow sources (Mart\'i et al. 2017). This observational result also has potential implications affecting the black hole merger scenarios that contribute to the gravitational wave background.