A connection between accretion state and $\textit{Fe K absorption}$ in an accreting neutron star: black hole-like soft state winds?

Understand

High resolution X-ray spectra of accreting stellar mass Black Holes reveal the presence of accretion disc winds, traced by high ionisation Fe K lines.

• These winds appear to have an equatorial geometry and to be observed only during disc dominated states in which the radio jet is absent.
• Accreting neutron star systems also show equatorial high ionisation absorbers.
• However, the presence of any correlation with the accretion state has not been previously tested.