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 Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We present evidence for X-ray line emitting and absorbing gas in the nucleusof the Broad-Line Radio Galaxy (BLRG), 3C 445. A 200ks Chandra LETG observationof 3C 445 reveals the presence of several highly ionized emission lines in thesoft X-ray spectrum, primarily from the He and H-like ions of O, Ne, Mg and Si.Radiative recombination emission is detected from O VII and O VIII, indicatingthat the emitting gas is photoionized. The He-like emission appears to beresolved into forbidden and intercombination line components, which implies ahigh density of >10^{10} cm^{-3}, while the Oxygen lines are velocity broadenedwith a mean width of ~2600 km s^{-1} (FWHM). The density and widths of theionized lines indicate an origin of the gas on sub-parsec scales in the BroadLine Region (BLR).The X-ray continuum of 3C 445 is heavily obscured either by apartial coverer or by a photoionized absorber of column density N_{H}=2x10^{23}cm^{-2} and ionization parameter log(xi)=1.4 erg cm s^{-1}. However the view ofthe X-ray line emission is unobscured, which requires the absorber to belocated at radii well within any parsec scale molecular torus. Instead, wesuggest that the X-ray absorber in 3C 445 may be associated with an outflowing,but clumpy, accretion disk wind with an observed outflow velocity of ~10000km/s.

Chandra high resolution spectroscopy of the circumnuclear matter in the Broad Line Radio Galaxy 3C445