%0 Journal Article %J MNRAS %D 2012 %T {Accretion disc wind variability in the states of the microquasar GRS 1915+105} %A {Neilsen}, J. %A {Petschek}, A. J. %A {Lee}, J. C. %X

{Continuing our study of the role and evolution of accretion disc winds in the microquasar GRS 1915+105, we present high-resolution spectral variability analysis of the {$\beta$} and {$\gamma$} states with the Chandra High-Energy Transmission Grating Spectrometer. By tracking changes in the absorption lines from the accretion disc wind, we find new evidence that radiation links the inner and outer accretion discs on a range of time-scales. As the central X-ray flux rises during the high-luminosity {$\gamma$} state, we observe the progressive overionization of the wind. In the {$\beta$} state, we argue that changes in the inner disc leading to the ejection of a transient 'baby jet' also quench the highly ionized wind from the outer disc. Our analysis reveals how the state, structure and X-ray luminosity of the inner accretion disc all conspire to drive the formation and variability of highly ionized accretion disc winds. }

%B MNRAS %V 421 %P 502-511 %G eng %R 10.1111/j.1365-2966.2011.20329.x