English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Ongoing studies with XMM-Newton have shown that powerful accretion discwinds, as revealed through highly-ionised Fe\,K-shell absorption at E>=6.7 keV,are present in a significant fraction of Active Galactic Nuclei (AGN) in thelocal Universe (Tombesi et al. 2010). In Gofford et al. (2013) we analysed asample of 51 Suzaku-observed AGN and independently detected Fe K absorption in~40% of the sample, and we measured the properties of the absorbing gas. Inthis work we build upon these results to consider the properties of theassociated wind. On average, the fast winds (v_out>0.01c) are located<r>~10^{15-18} cm (typically ~10^{2-4} r_s) from their black hole, their massoutflow rates are of the order <M_out>~0.01-1 Msun/yr or ~(0.01-1) M_edd andkinetic power is constrained to <L_k> ~10^{43-45} erg/s, equivalent to~(0.1-10%) L_edd. We find a fundamental correlation between the sourcebolometric luminosity and the wind velocity, with v_out \propto L_bol^{\alpha}and \alpha=0.4^{+0.3}_{-0.2}$ (90% confidence), which indicates that moreluminous AGN tend to harbour faster Fe K winds. The mass outflow rate M_out,kinetic power L_k and momentum flux P_out of the winds are also consequentlycorrelated with L_bol, such that more massive and more energetic winds arepresent in more luminous AGN. We investigate these properties in the frameworkof a continuum-driven wind, showing that the observed relationships are broadlyconsistent with a wind being accelerated by continuum-scattering. We find that,globally, a significant fraction (~85%) of the sample can plausibly exceed theL_k/L_bol~0.5% threshold thought necessary for feedback, while 45% may alsoexceed the less conservative ~5% of L_bol threshold as well. This suggests thatthe winds may be energetically significant for AGN--host-galaxy feedbackprocesses.

The Suzaku view of highly-ionised outflows in AGN: II -- Location, energetics and scalings with Bolometric Luminosity